[User]
What can some insects use their feelers to detect?
Options:
- (A) kale
- (B) noise
- (C) water vapor
- (D) tremors
- (E) waves
- (F) vibrate
- (G) air
- (H) sound
--
Let's think first: Some insects can use their antennae to detect sound. An insect's head has two feelers, or antennae. Some insects can use their feelers to detect sound.... So the answer is [(H)]
Organelles that come in pairs are involved in what?
Options:
- (A) movement
- (B) Veins and arteries.
- (C) competition
- (D) Plants growth
- (E) Animal survival
- (F) cell division
- (G) an organism's body
- (H) Plant reproduction
--
Let's think first: Centrioles are organelles involved in cell division. Centrioles come in pairs. Organelles that come in pairs are involved in cell division.... So the answer is [(F)]
In their quest for reproduction, salamanders are assisted by their what?
Options:
- (A) animals
- (B) kinetic energy
- (C) sense of irony
- (D) taste in clothing
- (E) fur and fat
- (F) sense of smell
- (G) chameleon
- (H) insects
--
Let's think first: Most salamanders use their sense of smell to find a mate. Food to survive, mates to reproduce, and water to drink. To reproduce, salamanders are assisted by their sense of smell.... So the answer is [(F)]
What happens as cells lose their ability to divide?
Options:
- (A) anemia
- (B) puberty
- (C) negative
- (D) radiation
- (E) getting old
- (F) replication
- (G) Dehydration
- (H) having a baby
--
Let's think first: Aging occurs as cells lose their ability to divide. Gerontology is the study of the aging process and old age. Getting old occurs as cells lose their ability to divide.... So the answer is [(E)]
What forms secondary vascular tissues in trees?
Options:
- (A) allow growth
- (B) primary growth
- (C) secondary growth
- (D) In their leaves
- (E) end growth
- (F) mating
- (G) Most plants
- (H) shrub beds
--
Let's think first: Secondary growth forms secondary vascular tissues and bark. All trees have bark. Trees secondary growth forms secondary vascular tissues.... So the answer is [(C)]
What phylum do starfish belong to?
Options:
- (A) fertile
- (B) animals
- (C) Echinoderm.
- (D) Mollusca.
- (E) Sponge.
- (F) Absorb light
- (G) Annelid.
- (H) a fish
--

[Assistant] Let's think first: Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are echinoderms.... So the answer is [(C)]


[User]
What often precedes mating?
Options:
- (A) A Greek letter
- (B) competition
- (C) friendship
- (D) birth of a child
- (E) death
- (F) Chemical energy
- (G) pregnancy
- (H) sweating
--
Let's think first: Mating is generally preceded by courtship. Friendship usually precedes courtship, and courtship, marriage. Friendship often comes before mating.... So the answer is [(C)]
What does taking off one's clothing improve the efficacy of?
Options:
- (A) recovery
- (B) hydration
- (C) Sweating
- (D) Modesty
- (E) Waterproofing
- (F) Exfoliation
- (G) Honesty
- (H) staying warm
--
Let's think first: Sweating reduces body heat. Clothing reduces the effectiveness of sweating as a means of cooling the body. Clothing can have an impact on the effectiveness of sweating to cool the body.... So the answer is [(C)]
Endocrine hormones travel through the what in something that runs like water?
Options:
- (A) body
- (B) muscle
- (C) state
- (D) a path
- (E) ligt
- (F) a fish
- (G) liquid
- (H) CO 2
--
Let's think first: Endocrine hormones travel throughout the body in the blood. And blood, blood runs like water. Endocrine hormones travel through the body in something that runs like water.... So the answer is [(A)]
Most of what type of animal is known for having a shell?
Options:
- (A) fossils
- (B) toads
- (C) eggs
- (D) swea
- (E) small
- (F) insects
- (G) porous
- (H) snail
--
Let's think first: Most mollusks have shells. Among mollusks, the golden snail is a survivalist. Most snails have shells.... So the answer is [(H)]
Electron transport requires which of the following?
Options:
- (A) electron microscope
- (B) sodium
- (C) Energy.
- (D) Oxygen
- (E) fission
- (F) warmth
- (G) flagellum
- (H) Energy
--
Let's think first: Electron transport is the final stage of aerobic respiration. Aerobic respiration occurs only in the presence of oxygen. Electron transport occurs only in the presence of oxygen.... So the answer is [(D)]
Animals are _ things.
Options:
- (A) insects
- (B) invisible
- (C) edible
- (D) impossible
- (E) protected
- (F) sparkly
- (G) living
- (H) an object
--

[Assistant] Let's think first: Animals adapt to cold temperatures. Adaptation living things adapt to their environment. Animals are living things.... So the answer is [(G)]


[User]
What do organisms cluster around, in the ocean floor?
Options:
- (A) cracks
- (B) chemicals
- (C) limestone
- (D) crust
- (E) headaches
- (F) Nutrients
- (G) horses
- (H) dogs Let's be accurate as possible.

[Assistant]
Organisms cluster around hydrothermal vents in the ocean floor. Background Hot water vents form inside cracks in the ocean floor. Organisms cluster around cracks in the ocean floor.
The final answer: (A).


[User]
Q: What is the process of removing feces and excess water from the human body called?
Options:
- (A) recycling
- (B) salivation
- (C) waste production
- (D) excretion
- (E) Exfoliation
- (F) perspiration
- (G) Deposition.
- (H) Deposition
Let's think step by step below.

[Assistant]
Excretion is the process of removing wastes and excess water from the body. Solid waste is called feces. Excretion is the process of removing feces and excess water from the body.
Thus, the answer is (D).


[User]
Muscle and internal organs are protected by:
Options:
- (A) immunization
- (B) fur
- (C) fat
- (D) bone
- (E) hair
- (F) skin
- (G) defense
- (H) copper
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Bone provides protection for soft tissues and internal organs. Soft tissue refers to the soft connective or supporting tissues, such as muscle. Bone provides protection for muscles and internal organs. The answer: (D).


[User]
Q: Which animal has a backbone?
Options:
- (A) camels
- (B) snail
- (C) bats
- (D) cricket
- (E) a fish
- (F) bird
- (G) koalas
- (H) octopus
A: So, my chain of thought: Birds are endothermic tetrapod vertebrates. Animals with backbones are called vertebrates. All birds have backbones. The answer is (F).

Q: Where does energy enter into in the form of sunlight and chemical compounds?
Options:
- (A) sun
- (B) science lab
- (C) biomes
- (D) orchids
- (E) photons
- (F) deserts
- (G) black hole
- (H) trees
A: So, my chain of thought: Energy enters ecosystems in the form of sunlight or chemical compounds. Biomes are global ecosystems. Energy enters biomes in the form of sunlight or chemical compounds. The answer is (C).

Q: _ is how organisms grow and repair themselves.
Options:
- (A) complex
- (B) recycling
- (C) properties
- (D) fusion
- (E) fission
- (F) bacteria
- (G) Mitosis
- (H) potatoes
A:

[Assistant] So, my chain of thought: Cell division is how organisms grow and repair themselves. Mitosis is cell division. Mitosis is how organisms grown and repair themselves. The answer is (G).


[User]
What might be stored in limestone?
Options:
- (A) carbonated water
- (B) chemicals
- (C) cigars
- (D) candles
- (E) Energy.
- (F) carbon
- (G) Energy
- (H) fossils
--
Let's think first: Carbon may be stored in sedimentary rock for millions of years. Limestone is a type of sedimentary rock. Carbon might be stored in limestone.... So the answer is [(F)]
How do organisms give rise to children?
Options:
- (A) mitosis
- (B) reproduction
- (C) reproductive isolation
- (D) Plants growth
- (E) it needs them
- (F) litter
- (G) by indirect light
- (H) replenishing
--
Let's think first: Reproduction is the process by which organisms give rise to offspring. Seed refers to offspring, children. Organisms give rise to children by reproduction.... So the answer is [(B)]
What usually results from getting shots?
Options:
- (A) heat produced
- (B) susceptibility to disease
- (C) limb amputation
- (D) a lot of human deaths
- (E) death and devastation
- (F) healing
- (G) resistance to disease
- (H) confusion
--
Let's think first: Immunity results from immunization. Immunization records with all required shots. Resistance to disease results from getting shots.... So the answer is [(G)]
What do muscle fibers need to do to enable movement?
Options:
- (A) Bend
- (B) strength
- (C) exercise
- (D) ligt
- (E) It expands
- (F) shorten
- (G) Vibrates
- (H) stay warm
--
Let's think first: Muscle contraction occurs when muscle fibers get shorter. Movement is based on the contraction of muscles. Movement happens when muscle fibers get shorter.... So the answer is [(F)]
What is a producer in terrestrial biomes?
Options:
- (A) food
- (B) Oak
- (C) mammals
- (D) flowers
- (E) earth
- (F) grass
- (G) Trees
- (H) mushrooms
--
Let's think first: Plants are the major producers in terrestrial biomes. Grasses are very distinctive plants. Grass is a producer in terrestrial biomes.... So the answer is [(F)]
What lacks walls and membranes?
Options:
- (A) deserts
- (B) flower cells
- (C) viruses
- (D) fungi
- (E) tree cells
- (F) bacteria
- (G) plant cells
- (H) alpacas
--

[Assistant] Let's think first: Viruses are not cells. Plant cells are surrounded by a cell membrane and a cell wall. Viruses do not have walls and membranes.... So the answer is [(C)]


[User]
Sweat cools the body when it
Options:
- (A) Movement of an air mass
- (B) dry conditions
- (C) heat produced
- (D) Decreased precipitation
- (E) hydration
- (F) It expands
- (G) the environment
- (H) turns into a gas Think carefully first, then make a decision. My thoughts:

[Assistant] Sweat wets the skin, and when it evaporates, it cools the body. Evaporation is when a liquid turns into a gas. Sweat cools the body when it turns into a gas. So the answer is (H).


[User]
Leaves lack what?
Options:
- (A) heat energy
- (B) heat or cold
- (C) permineralization
- (D) scattered light
- (E) secondary meristem
- (F) Plant growth is reduced
- (G) Chlorophyll
- (H) epidermis and dermis
--
Let's think first: Secondary meristem is located within and around the vascular tissues. Leaves lack Vascular Tissues. Leaves lack secondary meristem.... So the answer is [(E)]
------
What forms secondary vascular tissues in trees?
Options:
- (A) allow growth
- (B) primary growth
- (C) secondary growth
- (D) In their leaves
- (E) end growth
- (F) mating
- (G) Most plants
- (H) shrub beds
--
Let's think first: Secondary growth forms secondary vascular tissues and bark. All trees have bark. Trees secondary growth forms secondary vascular tissues.... So the answer is [(C)]
------
What has a layer of fat under the skin to help insulate the body?
Options:
- (A) goats
- (B) snakes
- (C) hamburgers
- (D) animals
- (E) humans
- (F) rabbit
- (G) bears
- (H) fur
--
Let's think first: Mammals have a layer of fat under the skin to help insulate the body. All humans are mammals. Humans have a layer of fat under the skin to help insulate the body.... So the answer is [(E)]
------
What is it called when an animal divides into two parts?
Options:
- (A) limb amputation
- (B) The bending of a ray of light
- (C) Veins and arteries.
- (D) epidermis and dermis
- (E) the body's largest organ
- (F) Leptospirosis
- (G) refraction of light
- (H) asexual reproduction
--

[Assistant]
Let's think first: Fission takes place when an animal divides into two parts. Asexual reproduction is by fragmentation, budding, or fission. Asexual reproduction is when an animal divides into two parts.... So the answer is [(H)]
------


[User]
Natural selection results in:
Options:
- (A) insects
- (B) root growth
- (C) Plants growth
- (D) Animal survival
- (E) animals
- (F) Plant reproduction
- (G) mammals
- (H) specialization Let's solve this problem gradually.

[Assistant] Specialization occurs when competing species evolve different adaptations. Adaptation is the result of natural selection. Specialization is a result of natural selection. So the final answer is (H).


[User]
Language can be learned through
Options:
- (A) play
- (B) osmosis
- (C) instincts
- (D) years
- (E) Birds
- (F) a path
- (G) sent
- (H) nerves Let's solve this problem gradually.

[Assistant] Behaviors can be learned through play. Language is a learned human behavior. Language can be learned through play. So the final answer is (A).


[User]
[[Ques]]: How do living things have children?
Options:
- (A) death
- (B) people
- (C) humans
- (D) babies
- (E) it needs them
- (F) reproduction
- (G) mitosis
- (H) production
[[Ans]]: [Reproduction is the process by which living things give rise to offspring. Seed refers to offspring, children. Living things use reproduction to have children.]
[(F)]

[[Ques]]: What can affect the structures in the cytoplasm where proteins are made/
Options:
- (A) aspirin
- (B) insulin
- (C) interact
- (D) harm them
- (E) temperature
- (F) Damages them
- (G) antibiotics
- (H) sunlight
[[Ans]]: [Ribosomes are structures in the cytoplasm where proteins are made. Many antibiotics affect the ribosome. Many antibiotices affect the structures in the cytoplasm where proteins are made.]
[(G)]

[[Ques]]: What usually results from getting shots?
Options:
- (A) heat produced
- (B) susceptibility to disease
- (C) limb amputation
- (D) a lot of human deaths
- (E) death and devastation
- (F) healing
- (G) resistance to disease
- (H) confusion
[[Ans]]:

[Assistant]
[Immunity results from immunization. Immunization records with all required shots. Resistance to disease results from getting shots.]
[(G)]


[User]
Organisms in which class have beaks that are generally adapted for the food they eat?
Options:
- (A) apples
- (B) Mammalia
- (C) koalas
- (D) voles
- (E) Agnatha
- (F) Aves
- (G) Reptilia
- (H) edible Let's solve this problem gradually.

[Assistant] Bird beaks are generally adapted for the food they eat. All birds are placed in the Class Aves. Organisms in the class Aves have beaks that are generally adapted for the food they eat. So the final answer is (F).


[User]
Something that helps prevent hypothermia:
Options:
- (A) dehydration
- (B) freezing
- (C) water
- (D) head hair
- (E) cold
- (F) electricity
- (G) Exfoliation
- (H) sweating
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Head hair is especially important in preventing heat loss from the body. Hypothermia Loss of body heat caused by exposure is called Hypothermia. Head hair is especially important in preventing hypothermia. The answer: (D).


[User]
Q: Plants have specialized tissues for what?
Options:
- (A) reproduction
- (B) muscles
- (C) bone
- (D) important habitats
- (E) health
- (F) food and shelter
- (G) skeleton
- (H) survival
Let's think step by step below.

[Assistant]
Plants have specialized reproductive organs. Tissues are organized into organs. Plants have specialized reproductive tissues.
Thus, the answer is (A).


[User]
Let's think step by step! What kind of species of animals mainly live in waters?
Options:
- (A) water plants
- (B) warm-blooded
- (C) colder and wetter
- (D) aquatic animals
- (E) aviary species of animals
- (F) objects that have mass
- (G) It helps them survive
- (H) kindom animalia
The thinking starts now:

[Assistant] Marine species live mainly in shallow coastal waters. All species are aquatic, most are marine. Aquatic species live mainly in shallow coastal waters. The final answer: (D).


[User]
Question: What is produced by female flower parents in the ovaries?
Options:
- (A) seeds
- (B) pollen
- (C) sugar
- (D) abcess
- (E) honey
- (F) H 2 O
- (G) eggs
- (H) nectar
Let's be accurate as possible and think step-by-step.

[Assistant]
Female gametophytes produce eggs inside the ovaries of flowers. Gametophytes are the parent of the baby fern. Female flower parents produce eggs inside the ovaries of flowers.
The answer: (G).


[User]
q: What do bacteria not have, for protein production?
Options:
- (A) Acids
- (B) alleles
- (C) ribosomes
- (D) layers of fat
- (E) light energy
- (F) heat energy
- (G) Energy
- (H) Energy.
a: (C)... Explanation: Ribosomes are small organelles where proteins are made. Bacteria contain no organelles. Bacteria do not have ribosomes for protein production. That's why the answer is (C).

q: Most people can survive only a few days without what?
Options:
- (A) h2o
- (B) urea
- (C) CO2
- (D) beds
- (E) houses
- (F) air
- (G) NaCl
- (H) H20
a: (H)... Explanation: Most people can survive only a few days without water. H20 Bottled water was generally consumed last year. Most people can survive only a few days without H20. That's why the answer is (H).

q: What is proprioception part of?
Options:
- (A) tail fins
- (B) genus
- (C) fur seals
- (D) animals
- (E) athletes
- (F) movement
- (G) humans
- (H) balance
a: (H)... Explanation: Balance is the ability to sense and maintain body position. Another name for sense of body position is proprioception. Balance involves proprioception ability. That's why the answer is (H).

q: What die quickly if a stroke occurs?
Options:
- (A) a fish
- (B) animals
- (C) brain cells
- (D) organs
- (E) critical organs
- (F) protons
- (G) neutrons
- (H) bones
a:

[Assistant] (C)... Explanation: Brain cells die quickly if their oxygen supply is cut off. If the oxygen supply to the brain is cut off, a stroke can occur. Brain cells die quickly if a stroke occurs. That's why the answer is (C).


[User]
That which is healthy when informed can take in what by eating producers?
Options:
- (A) take out
- (B) take in
- (C) food statistics
- (D) nectar
- (E) Fruits
- (F) food
- (G) bamboo
- (H) Energy
--
Let's think first: Consumers take in food by eating producers or other living things. An informed consumer is a healthy consumer. That which is healthy when informed can take in food by eating producers.... So the answer is [(F)]
Where is brca2 located?
Options:
- (A) retina
- (B) lungs
- (C) chromatic
- (D) the eyes
- (E) chromosome
- (F) chromography
- (G) chrome
- (H) sensory neurons
--
Let's think first: Chromosomes contain genes, which code for proteins. Another gene, named BRCA2, has also been identified. Chromosomes contain BRCA2.... So the answer is [(E)]
What does an animal like a mollusk lack that many other animals have?
Options:
- (A) sensory neurons
- (B) Energy.
- (C) Bodily water
- (D) kinetic energy
- (E) alveoli
- (F) the skin
- (G) an organism's body
- (H) spinal column
--
Let's think first: Mollusks are invertebrates such as the common snail. Invertebrates are animals who lack a backbone or spinal column. Mollusks are animals who lack a backbone or spinal column.... So the answer is [(H)]
What can use energy in order to make food for itself and others?
Options:
- (A) organisms
- (B) mollusks
- (C) trees
- (D) microbes
- (E) seeds
- (F) chlorophyll
- (G) plants
- (H) animals
--
Let's think first: Producers use energy and inorganic molecules to make food. If the plant is green, it is a producer. Plants use energy to make food.... So the answer is [(G)]
What does a pregnanct woman pass on to the fetus?
Options:
- (A) Leptospirosis
- (B) Energy.
- (C) antibodies
- (D) education
- (E) embryo
- (F) parasites
- (G) zygotes
- (H) fever
--
Let's think first: Passive immunity lasts only as long as the antibodies survive in body fluids. Immunization in a pregnant woman produces both active and passive immunity in the fetus. A pregnant woman will pass antibodies to the fetus.... So the answer is [(C)]
What uses sounds, chemicals and visual cues?
Options:
- (A) bees
- (B) seaweed
- (C) running
- (D) monkeys
- (E) humans
- (F) germs
- (G) athletes
- (H) coral
--

[Assistant] Let's think first: Animals can communicate with sounds, chemicals, or visual cues. Monkeys are wild animals. Monkeys communicate with sounds, chemicals or visual cues.... So the answer is [(D)]


[User]
Let's think step by step! What is caused by a reduction of a hormone that helps cells absorb sugar from the blood?
Options:
- (A) Dehydration
- (B) anemia
- (C) diabetes
- (D) glucose
- (E) cancer
- (F) fever
- (G) low blood sugar
- (H) strokes
The thinking starts now:

[Assistant] Insulin is a hormone that helps cells absorb sugar from the blood. Diabetes is caused by a reduction in insulin or a resistance to insulin. Diabetes is caused by a reduction of a hormone that helps cells absorb sugar from the blood. The final answer: (C).


[User]
Q: Wetlands are extremely important:
Options:
- (A) environments
- (B) food and shelter
- (C) animals
- (D) Plants growth
- (E) water conservation
- (F) important habitats
- (G) homogenous
- (H) storing water
Let's think step by step below.

[Assistant]
Wetlands are extremely important biomes. Biomes are simply environments that have some things in common. Wetlands are extremely important environments.
Thus, the answer is (A).


[User]
Nephrons are the structural and functional units of the organ that filters what?
Options:
- (A) Light
- (B) Energy
- (C) Coffee
- (D) liquid
- (E) Air
- (F) Oxygen
- (G) Blood
- (H) Food Let's solve this problem gradually.

[Assistant] Nephrons are the structural and functional units of the kidneys. Blood is filtered in the kidney. Nephrons are the structural and functional units of the organ that filters blood. So the final answer is (G).


[User]
What organism uses their sense of smell to find a mate?
Options:
- (A) fur seals
- (B) bears
- (C) Amphibians
- (D) Fish
- (E) mammals
- (F) Butterflies
- (G) rabbit
- (H) Honey smelling bees
--
Let's think first: Most salamanders use their sense of smell to find a mate. Salamanders are a type of amphibian. Some amphibians use their sense of smell to find a mate.... So the answer is [(C)]
Some crustaceans feed on
Options:
- (A) phytoplankton
- (B) fungi
- (C) refraction of light
- (D) heat energy
- (E) an organism's body
- (F) carbon
- (G) algae
- (H) salt and water.
--
Let's think first: Zooplankton are tiny animals that feed on phytoplankton. Many zooplankton are crustaceans. Some crustaceans feed on phytoplankton.... So the answer is [(A)]
Most carcinogens can cause cancer by causing mutations to what?
Options:
- (A) that material's properties
- (B) dexyribonucleic acid
- (C) Veins and arteries.
- (D) Chlorophyll
- (E) harmful substances
- (F) properties
- (G) a lot of human deaths
- (H) characteristics
--
Let's think first: Most carcinogens cause cancer by producing mutations in DNA. DNA DNA is deoxyribonucleic acid. Most carcinogens cause cancer by producing mutations in dexyribonuclein acid.... So the answer is [(B)]
Invertebrates can be what?
Options:
- (A) people
- (B) scarce resources
- (C) vertebrates
- (D) deposit feeders
- (E) Catch prey
- (F) major threat to health
- (G) more abundant
- (H) planets
--
Let's think first: Earthworms are important deposit feeders that help form and enrich soil. Earthworms by Casey Earthworms are invertebrates. Invertebrates can be deposit feeders.... So the answer is [(D)]
What is the name of the light cycle that plants detect?
Options:
- (A) photons
- (B) three
- (C) Summer
- (D) diurnal
- (E) autumn
- (F) Energy.
- (G) Energy
- (H) sunlight
--
Let's think first: Plants detect and respond to the daily cycle of light and darkness. Diurnal cycles Diurnal cycles are the daily cycles of light and darkness. Plants detect and respond to diurnal cycles.... So the answer is [(D)]
What does cricoid contain?
Options:
- (A) Bodily water
- (B) cellulum
- (C) cellulite
- (D) Energy
- (E) hydrocarbons
- (F) cellulose
- (G) cellular
- (H) layers of fat
--

[Assistant] Let's think first: Cartilage is a tough tissue that contains a protein called collagen. Membranes attached to the cricoid cartilage . Cricoid is a tough tissue that contains a protein called collagen.... So the answer is [(F)]


[User]
Let's think step by step! Electron transport requires which of the following?
Options:
- (A) electron microscope
- (B) sodium
- (C) Energy.
- (D) Oxygen
- (E) fission
- (F) warmth
- (G) flagellum
- (H) Energy
The thinking starts now:

[Assistant] Electron transport is the final stage of aerobic respiration. Aerobic respiration occurs only in the presence of oxygen. Electron transport occurs only in the presence of oxygen. The final answer: (D).


[User]
(question). Evaporation of sweat uses what from the body?
Options:
- (A) expelled
- (B) Positive charges
- (C) all liquids
- (D) properties
- (E) Something to move
- (F) water vapor
- (G) kinetic energy
- (H) Cooling vapors
(answer). Evaporation of sweat uses energy, and the energy comes from body heat. Kinetic energy comes from heat. Evaporation of sweat uses kinetic energy from the body.
The answer is (G)

(question). _ is more complex in eukaryotes than prokaryotes.
Options:
- (A) voltage
- (B) disease
- (C) Epidermis
- (D) Mitosis
- (E) organ
- (F) distance
- (G) recycling
- (H) resistance
(answer). Cell division is more complex in eukaryotes than prokaryotes. Mitosis is cell division. Mitosis is more complex in eukaryotes than prokaryotes.
The answer is (D)

(question). What might puppies and kitties have?
Options:
- (A) They have thick fur
- (B) leeches
- (C) Animal fur
- (D) fur and fat
- (E) sensory neurons
- (F) parasitic snakes
- (G) crickets
- (H) parasitic worms
(answer). Roundworms may be free-living or parasitic. Roundworms Nearly all puppies and kittens have roundworms. Puppies and kittens may have parasitic worms.
The answer is (H)

(question). What lacks walls and membranes?
Options:
- (A) deserts
- (B) flower cells
- (C) viruses
- (D) fungi
- (E) tree cells
- (F) bacteria
- (G) plant cells
- (H) alpacas
(answer).

[Assistant]
Viruses are not cells. Plant cells are surrounded by a cell membrane and a cell wall. Viruses do not have walls and membranes.
The answer is (C)


[User]
What is proprioception part of?
Options:
- (A) tail fins
- (B) genus
- (C) fur seals
- (D) animals
- (E) athletes
- (F) movement
- (G) humans
- (H) balance
--
Let's think first: Balance is the ability to sense and maintain body position. Another name for sense of body position is proprioception. Balance involves proprioception ability.... So the answer is [(H)]
What tells a cell what to do?
Options:
- (A) breathe
- (B) alleles
- (C) Energy
- (D) voltage
- (E) fever
- (F) genes
- (G) nerves
- (H) state
--
Let's think first: Molecules of DNA are encoded with instructions that tell cells what to do. Genes are parts of DNA molecules. Genes are instructions that tell cells what to do.... So the answer is [(F)]
Energy that comes from body heat can help with
Options:
- (A) recovery
- (B) commuting
- (C) movement
- (D) cooling
- (E) strength
- (F) stay warm
- (G) health
- (H) motion
--
Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. When sweat is evaporated into the air, it provides additional cooling. Cooling uses energy, and the energy comes from body heat.... So the answer is [(D)]
What do muscle fibers need to do to enable movement?
Options:
- (A) Bend
- (B) strength
- (C) exercise
- (D) ligt
- (E) It expands
- (F) shorten
- (G) Vibrates
- (H) stay warm
--
Let's think first: Muscle contraction occurs when muscle fibers get shorter. Movement is based on the contraction of muscles. Movement happens when muscle fibers get shorter.... So the answer is [(F)]
What do most molds get their organic compounds from?
Options:
- (A) dead organisms
- (B) particles in the air
- (C) fossil fuels
- (D) aqueous solution
- (E) burning coal
- (F) living organisms
- (G) swamp vegetation
- (H) sunlight
--
Let's think first: Most fungi get organic compounds from dead organisms. Fungi include yeasts, molds, and fleshy fungi. Molds get organic compound from dead organisms.... So the answer is [(A)]
Adult urochordates are _-shaped.
Options:
- (A) Length
- (B) a prism
- (C) fossils
- (D) grow
- (E) barrel
- (F) fertile
- (G) Grow well
- (H) revolving
--

[Assistant] Let's think first: Adult tunicates are barrel-shaped. Urochordates are commonly called tunicates. Adult urochordates are barrel-shaped.... So the answer is [(E)]


[User]
Q: Plants make food from what?
Options:
- (A) Chemical energy
- (B) inorganic molecules
- (C) photosynthesis
- (D) Light passing through water
- (E) direct energy
- (F) absorb light energy
- (G) Organic compounds
- (H) In their leaves
Let's think step by step below.

[Assistant]
Producers make food from inorganic molecules. Plants are known as producers . Plants make food from inorganic molecules.
Thus, the answer is (B).


[User]
Which is higher on the food chain?
Options:
- (A) insects
- (B) animals
- (C) humans
- (D) glucose
- (E) decomposers
- (F) herbivores
- (G) producers
- (H) consumers
--
Let's think first: Consumers take in food by eating producers or other living things. Decomposers produce nutrients for producers. Decomposers make nutrients for organisms that become food for consumers.... So the answer is [(H)]
------
What is essential for cellular respiration for organisms consuming voas and alcohols?
Options:
- (A) carbon
- (B) glucose
- (C) h2o
- (D) Air
- (E) oxygen
- (F) Energy
- (G) Energy.
- (H) water
--
Let's think first: Oxygen is essential for cellular respiration for all aerobic organisms. Aerobic organisms consume VOAs and alcohols. Oxygen is essential for cellular respiration for organisms consuming VOAs and alcohols.... So the answer is [(E)]
------
What do things that cannot make their own food need as a nutrient?
Options:
- (A) Energy
- (B) metal
- (C) animals
- (D) mud
- (E) Energy.
- (F) protein
- (G) prototype
- (H) fungi
--
Let's think first: Heterotrophs are living things that cannot make their own food. Proteins are an essential nutrient for heterotrophs . Living things that can't make their own food need protein.... So the answer is [(F)]
------
_ are found mainly in the skin.
Options:
- (A) To keep their body heat.
- (B) Veins and arteries.
- (C) layers of fat
- (D) Leptospirosis
- (E) refraction of light
- (F) Pacinian corpuscles
- (G) major threat to health
- (H) it keeps an organism warm
--

[Assistant]
Let's think first: Pressure receptors are found mainly in the skin. Pacinian corpuscles are pressure receptors. Pacinian corpuscles are found mainly in the skin.... So the answer is [(F)]
------


[User]
_ is how organisms grow and repair themselves.
Options:
- (A) complex
- (B) recycling
- (C) properties
- (D) fusion
- (E) fission
- (F) bacteria
- (G) Mitosis
- (H) potatoes
--
Let's think first: Cell division is how organisms grow and repair themselves. Mitosis is cell division. Mitosis is how organisms grown and repair themselves.... So the answer is [(G)]
Populations that are biodiverse might be called:
Options:
- (A) homogenous enclaves
- (B) similar
- (C) animals
- (D) peachleaf willow
- (E) communities
- (F) bottlenecks
- (G) insects
- (H) fertile
--
Let's think first: Communities consist of populations of different species. Biodiversity is a lot more than just the number of different plant and animal species. Communities consist of populations that are biodiverse.... So the answer is [(E)]
What can prevent 90 percent of the body's heat loss?
Options:
- (A) Masks
- (B) fur
- (C) coats
- (D) bald head
- (E) increase body fat
- (F) sweaters
- (G) skin
- (H) hair
--
Let's think first: Head hair is especially important in preventing heat loss from the body. Almost 90 percent of the body's heat loss is from the head. Without hair, 90 percent of the body's heat would be lost.... So the answer is [(H)]
Where so parasites go to survive?
Options:
- (A) in a field
- (B) away from a host
- (C) heat produced
- (D) loose soil
- (E) in the water
- (F) on a host
- (G) Most plants
- (H) retina
--
Let's think first: Some parasites live on the surface of their host. Survival is to live, to live means hope. Some parasites survive on the surface of their host.... So the answer is [(F)]
Where in a cell are ribosomes located?
Options:
- (A) outside the nucleus
- (B) Most plants
- (C) solid, liquid, gas
- (D) allow growth
- (E) Veins and arteries.
- (F) Earth orbiting the Sun
- (G) Chlorophyll
- (H) the body's largest organ
--
Let's think first: Ribosomes are structures in the cytoplasm where proteins are made. Outside the nucleus is cytoplasm. Ribosomes are structures outside the nucleus where proteins are made.... So the answer is [(A)]
What is the name of something some animals use to conserve water and elminate waste?
Options:
- (A) it keeps an organism warm
- (B) food and shelter
- (C) Exfoliation
- (D) an area swollen with pus
- (E) swamp vegetation
- (F) excretory structures
- (G) reusing materials
- (H) colder and wetter
--

[Assistant] Let's think first: Some arthropods have special excretory structures. Terrestrial arthropods have an excretory system that conserves water and eliminates waste. Some animals have excretory structures that conserve water and elminate waste.... So the answer is [(F)]


[User]
What have a centralized nervous system with a brain?
Options:
- (A) objects that have mass
- (B) warm-blooded
- (C) Earth orbiting the Sun
- (D) jellyfish
- (E) salmon only
- (F) bass only
- (G) bass and salmon
- (H) chickens Let's be accurate as possible.

[Assistant]
Fish have a centralized nervous system with a brain. Fish include bass and salmon. Bass and salmon have a centralized nervous system with a brain.
The final answer: (G).


[User]
What do ecosystems in nature need an influx of to remain feasible?
Options:
- (A) Continuous nuclear energy.
- (B) Natural lipids and proteins.
- (C) Energy.
- (D) rain
- (E) water
- (F) Energy
- (G) oxygen
- (H) Renewable Sunny Delight.
--
Let's think first: Energy enters ecosystems in the form of sunlight or chemical compounds. Sunlight is the source of light in nature. Nature is comprised of many ecosystems which all depend upon energy.... So the answer is [(C)]
What do nephrons filter?
Options:
- (A) Blood
- (B) matter
- (C) solutes
- (D) Energy
- (E) SO2
- (F) Gases
- (G) Energy.
- (H) cations
--
Let's think first: Nephrons are the structural and functional units of the kidneys. Blood is filtered in the kidney. Nephrons filter blood.... So the answer is [(A)]
Organisms cluster around hot water inside cracks where?
Options:
- (A) loose soil
- (B) ocean floor
- (C) food and shelter
- (D) tectonic plates
- (E) the ground
- (F) allow growth
- (G) Absorb light
- (H) survive
--
Let's think first: Organisms cluster around hydrothermal vents in the ocean floor. Background Hot water vents form inside cracks in the ocean floor. Organisms cluster around hot water inside cracks in the ocean floor.... So the answer is [(B)]
What is an example of an echinoderm?
Options:
- (A) a fish
- (B) eel
- (C) starfish
- (D) parasites
- (E) ferns
- (F) shark
- (G) fertile
- (H) algae
--
Let's think first: Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are an echinoderm with a unique water vascular system.... So the answer is [(C)]
What organism uses their sense of smell to find a mate?
Options:
- (A) fur seals
- (B) bears
- (C) Amphibians
- (D) Fish
- (E) mammals
- (F) Butterflies
- (G) rabbit
- (H) Honey smelling bees
--
Let's think first: Most salamanders use their sense of smell to find a mate. Salamanders are a type of amphibian. Some amphibians use their sense of smell to find a mate.... So the answer is [(C)]
What type of evolution is very, very slow above the level of the species?
Options:
- (A) forest is destroyed
- (B) macroevolution
- (C) animals
- (D) parallel evolution
- (E) mechanical
- (F) Continents drifting
- (G) divergent evolution
- (H) microevolution
--

[Assistant] Let's think first: Macroevolution is evolution over geologic time above the level of the species. And geologic time is very, very slow. Macroevolution is very, very slow evolution above the level of the species.... So the answer is [(B)]


[User]
What is not a cell?
Options:
- (A) all matter
- (B) layers of fat
- (C) illness
- (D) bacteria
- (E) influenza
- (F) Leptospirosis
- (G) an object
- (H) hydrocarbons
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Viruses are not cells. Influenza viruses mutate. Influenza is not a cell. The answer: (E).


[User]
Use reasoning to answer the following question. What do many plants do to respond to the shorter days in fall?
Options:
- (A) go through a resting period
- (B) changing the phase
- (C) Release energy
- (D) Generating heat
- (E) produce more pollen
- (F) colder and wetter
- (G) grow taller
- (H) make more chlorophyll

[Assistant]
Many plants respond to the days growing shorter in the fall by going dormant. Plants can be divided at any time, although the dormant or rest period is best. Many plants respond to the days growing shorter in the fall by going through a rest period.
So, the answer is (A).


[User]
Question: What is an example of an echinoderm?
Options:
- (A) a fish
- (B) eel
- (C) starfish
- (D) parasites
- (E) ferns
- (F) shark
- (G) fertile
- (H) algae
Let's be accurate as possible and think step-by-step.

[Assistant]
Echinoderms have a unique water vascular system with tube feet. Each starfish arm is lined with tube feet. Starfish are an echinoderm with a unique water vascular system.
The answer: (C).


[User]
Neurotransmitters and hormones are what in their function?
Options:
- (A) cells
- (B) organic
- (C) inorganic
- (D) complex
- (E) Vibrates
- (F) warm
- (G) properties
- (H) similar Let's be accurate as possible.

[Assistant]
Hormones are chemical messengers that control many body functions. Neurotransmitters are chemical messengers in the brain. Hormones and neurotransmitters behave in common ways.
The final answer: (H).


[User]
Which is the most likely cause of throat tumors?
Options:
- (A) cigars
- (B) Allergies
- (C) viruses
- (D) Pesticides
- (E) rocks
- (F) doctors
- (G) the skin
- (H) water
--
Let's think first: Some viruses can cause cancer. Lung cancer is a formation of tumors in the lung. Some viruses result in the formation of malignant tumors.... So the answer is [(C)]
------
Where do rays enter the eye?
Options:
- (A) glass
- (B) Summer
- (C) pupil
- (D) lenses
- (E) harmful
- (F) the sun
- (G) photons
- (H) skin
--
Let's think first: Light enters the eye through an opening called the pupil. Light rays are focussed on the retina. When rays are shined at the eyes, they enter an opening called the pupil.... So the answer is [(C)]
------
What is the euphrates larger than?
Options:
- (A) ocean
- (B) planet
- (C) trees
- (D) sea
- (E) Inches
- (F) Sediment
- (G) stream
- (H) Length
--
Let's think first: Rivers are usually larger than streams. And the fourth river is the Great River, the river Euphrates. The Euphrates is larger than a stream.... So the answer is [(G)]
------
Diverse hydrophobic molecules may consist of what type of acids?
Options:
- (A) Acids
- (B) solutes
- (C) watery
- (D) three
- (E) cell
- (F) rings
- (G) dry
- (H) fatty
--

[Assistant]
Let's think first: Lipids may consist of fatty acids alone, or they may contain other molecules as well. Lipids Lipids are diverse hydrophobic molecules. Diverse hydrophobic molecules may consist of fatty acids alone.... So the answer is [(H)]
------


[User]
(question). What does bush basil have?
Options:
- (A) The flowers are pollinated
- (B) photosynthesis.
- (C) characteristics
- (D) A compound that donates proton
- (E) Something that comes in a bundle of fibers
- (F) sub-units of species
- (G) the body's largest organ
- (H) specialized reproductive organ
(answer). Plants have specialized reproductive organs. Holy basil and bush basil are related plants. Bush basil has specialized reproductive organs.
The answer is (H)

(question). Which of the following would animals use to store energy?
Options:
- (A) fats
- (B) plants
- (C) sodium
- (D) blood
- (E) Energy
- (F) sugar
- (G) food
- (H) carcass
(answer). Animals use saturated fatty acids to store energy. Fatty Acids Fatty acids are the building blocks of fats. Animals use fats to store energy.
The answer is (A)

(question). Changes in what are essential for evolution to occur.
Options:
- (A) color of leaves
- (B) genetic material
- (C) learned behavior
- (D) synthetic material
- (E) the body's largest organ
- (F) acquired characteristics
- (G) sensory neurons
- (H) Most plants
(answer). Mutations are essential for evolution to occur. Mutations are changes in the genetic material. Changes in the genetic material are essential for evolution to occur.
The answer is (B)

(question). Biodiversity increases the what of islands?
Options:
- (A) water source
- (B) stability
- (C) Plants growth
- (D) our planet
- (E) luminescence
- (F) environment
- (G) human population
- (H) allow growth
(answer).

[Assistant]
Biodiversity increases the productivity and stability of ecosystems. Islands are delicately balanced ecosystems. Biodiversity increases the stability and productivity of islands.
The answer is (B)


[User]
Let's think step by step! Forests stabilize what influences what growth?
Options:
- (A) Trees
- (B) Energy
- (C) wind
- (D) seasons
- (E) rain
- (F) plant
- (G) Winter
- (H) Energy.
The thinking starts now:

[Assistant] Climate influences plant growth, biodiversity, and adaptations of land organisms. Climate Forests stabilize climate. Forests stabilize what influences plant growth. The final answer: (F).


[User]
What happens before the rigid structure that surrounds the plant cell dilates?
Options:
- (A) It decreases
- (B) competition
- (C) air cools
- (D) relaxation
- (E) cracking
- (F) sweating
- (G) rapid expansion
- (H) It expands
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Dilation occurs when cell walls relax. Cell wall is the rigid structure that surrounds the plant cell. Dilation occurs when the rigid structure that surrounds the plant cell relaxes. The answer: (D).


[User]
Populations that are biodiverse might be called:
Options:
- (A) homogenous enclaves
- (B) similar
- (C) animals
- (D) peachleaf willow
- (E) communities
- (F) bottlenecks
- (G) insects
- (H) fertile
--
Let's think first: Communities consist of populations of different species. Biodiversity is a lot more than just the number of different plant and animal species. Communities consist of populations that are biodiverse.... So the answer is [(E)]
------
What does shivering generate?
Options:
- (A) kinetic
- (B) energy
- (C) friction
- (D) Energy.
- (E) expels heat
- (F) heat
- (G) warmth
- (H) rhythm
--
Let's think first: Shivering occurs when many muscles contract a little bit all at once. Shivering causes muscle contractions to warm the body. The contractions caused by shivering generates warmth.... So the answer is [(G)]
------
What can some insects use their feelers to detect?
Options:
- (A) kale
- (B) noise
- (C) water vapor
- (D) tremors
- (E) waves
- (F) vibrate
- (G) air
- (H) sound
--
Let's think first: Some insects can use their antennae to detect sound. An insect's head has two feelers, or antennae. Some insects can use their feelers to detect sound.... So the answer is [(H)]
------
Where is brca2 located?
Options:
- (A) retina
- (B) lungs
- (C) chromatic
- (D) the eyes
- (E) chromosome
- (F) chromography
- (G) chrome
- (H) sensory neurons
--

[Assistant]
Let's think first: Chromosomes contain genes, which code for proteins. Another gene, named BRCA2, has also been identified. Chromosomes contain BRCA2.... So the answer is [(E)]
------


[User]
Mussels have what?
Options:
- (A) seaweed
- (B) arms
- (C) Energy
- (D) a shell
- (E) warmth
- (F) bacteria
- (G) Length
- (H) legs
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Most mollusks have shells. Mussels are bivalve mollusks. Mussels have shells. The answer: (D).


[User]
Q: What has a centralized nervous system with a brain?
Options:
- (A) Birds
- (B) pan
- (C) virus
- (D) sharks
- (E) Man
- (F) trout
- (G) leech
- (H) parasite
Let's think step by step below.

[Assistant]
Fish have a centralized nervous system with a brain. Fish include trout and other fish. Trout have a centralized nervous system with a brain.
Thus, the answer is (F).


[User]
What occurs when the tension of cell walls are eased?
Options:
- (A) Sleep
- (B) exercise
- (C) friction
- (D) Exfoliation
- (E) recovery
- (F) dilation
- (G) sweating
- (H) murmur Let's be accurate as possible.

[Assistant]
Dilation occurs when cell walls relax. Relaxation promotes relaxation and easing of tension. Dilation occurs when the tension of cell walls are eased.
The final answer: (F).


[User]
Question to you: What has a nervous system?
Options:
- (A) Nerve tonic
- (B) Jellyfish
- (C) Air
- (D) fur seals
- (E) Cardiovascular system
- (F) animals
- (G) chickens
- (H) elephants.
Let's reason step-by-step:

[Assistant] Most invertebrates have a nervous system. Jellyfish and insects are invertebrates. Jellyfish have a nervous system. Final answer: (B).


[User]
Nephrons are the structural and functional units of the organ that filters what?
Options:
- (A) Light
- (B) Energy
- (C) Coffee
- (D) liquid
- (E) Air
- (F) Oxygen
- (G) Blood
- (H) Food
--
Let's think first: Nephrons are the structural and functional units of the kidneys. Blood is filtered in the kidney. Nephrons are the structural and functional units of the organ that filters blood.... So the answer is [(G)]
Where does the energy to evaporate perspiration come from?
Options:
- (A) heat produced
- (B) The Sun
- (C) goosebumps
- (D) electrical energy
- (E) kinetic force
- (F) body heat
- (G) heat energy
- (H) energy
--
Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. Sweat glands pump perspiration through pores. Perspiration comes through pores and is evaporated by energy from body heat.... So the answer is [(F)]
What do dolphins use to store energy?
Options:
- (A) saturated fatty acids
- (B) thermal insulators
- (C) kinetic energy
- (D) evaporation
- (E) Something coming from a gland
- (F) objects that have mass
- (G) it helps plants in growing
- (H) Positive charges
--
Let's think first: Animals use saturated fatty acids to store energy. Dolphins are a very unique animal. Dolphins use saturated fatty acids to store energy.... So the answer is [(A)]
What shows evolution over geologic time above the level of the species?
Options:
- (A) speciation events
- (B) Leptospirosis
- (C) cliffs
- (D) rapid expansion
- (E) peachleaf willow
- (F) swamp vegetation
- (G) Darwin
- (H) RNA
--
Let's think first: Macroevolution is evolution over geologic time above the level of the species. Speciation events are thus examples of macroevolution. Speciation events show evolution over geologic time above the level of the species.... So the answer is [(A)]
What is one thing fish cannot make?
Options:
- (A) babies
- (B) nests
- (C) matter
- (D) fat
- (E) edible
- (F) Energy
- (G) bubbles
- (H) food
--
Let's think first: Heterotrophs are living things that cannot make their own food. All fish are heterotrophic. Fish cannot make their own food.... So the answer is [(H)]
What is a potential outcome of genetic mutation?
Options:
- (A) HIV
- (B) albino
- (C) anemia
- (D) pizza eating turtles
- (E) genealogy
- (F) SNPs
- (G) biology
- (H) death
--

[Assistant] Let's think first: Mutations may change the structure of a chromosome or just change a single nucleotide. SNPs involve polymorphisms at the single nucleotide level. Mutations may change the structure of a chromosome or just cause SNPs.... So the answer is [(F)]


[User]
What response are antibodies involved in?
Options:
- (A) resistance activities
- (B) the pituitary response
- (C) major threat to health
- (D) antigens summoning them
- (E) Leptospirosis
- (F) being taken as a supplement
- (G) resistance
- (H) the immune response
--
Let's think first: Lymphocytes are the key cells involved in the immune response. Antibodies are synthesised by lymphocytes. Antibodies are involved in the immune response.... So the answer is [(H)]

If the rate of breathing is too fast or too slow, what my become unstable?
Options:
- (A) our planet
- (B) environment
- (C) state
- (D) all matter
- (E) our star
- (F) blood pH
- (G) cigarettes
- (H) fronts
--
Let's think first: Blood pH may become unbalanced if the rate of breathing is too fast or too slow. When a compound is unbalanced it becomes unbalanced and unstable. Blood pH may become unstable if the rate of breathing is too fast or too slow.... So the answer is [(F)]

Mammals can also generate little bursts of heat through what?
Options:
- (A) Movement of an air mass
- (B) crackling
- (C) Veins and arteries.
- (D) electromagnetic energy
- (E) house
- (F) fire
- (G) muscle contractions
- (H) aerobic capacity
--

[Assistant] Let's think first: Mammals can also generate little bursts of heat by shivering. Shivering causes muscle contractions to warm the body. Mammals can also generate little bursts of heat through muscle contractions.... So the answer is [(G)]


[User]
Biodiversity increases the what of islands?
Options:
- (A) water source
- (B) stability
- (C) Plants growth
- (D) our planet
- (E) luminescence
- (F) environment
- (G) human population
- (H) allow growth Let's be accurate as possible.

[Assistant]
Biodiversity increases the productivity and stability of ecosystems. Islands are delicately balanced ecosystems. Biodiversity increases the stability and productivity of islands.
The final answer: (B).


[User]
Let's think step by step! Nitrogen depletion is a condition of some:
Options:
- (A) bushes
- (B) humans
- (C) animals
- (D) soils
- (E) disease
- (F) legumes
- (G) mammals
- (H) Birds
The thinking starts now:

[Assistant] Soil can be depleted of nutrients. An important nutrient commonly added to soil is nitrogen. Soil can be depleted of nitrogen. The final answer: (D).


[User]
What do reptiles have?
Options:
- (A) wild rides
- (B) nerves
- (C) toadies
- (D) Bodily water
- (E) backbones
- (F) four limbs
- (G) Leptospirosis
- (H) pipe Let's be accurate as possible.

[Assistant]
Vertebrate chordates have a backbone. Because reptiles are vertebrates, they are chordates. Reptiles have backbones.
The final answer: (E).


[User]
What occurs over geologic time above the level of the species.
Options:
- (A) Warm air moving into cold air
- (B) wind and erosion
- (C) remains of prehistoric life
- (D) tectonic plates being pushed together
- (E) Something with a head, thorax, and abdomen
- (F) The area was once underwater
- (G) Species changing to another.
- (H) movement of tectonic plates
--
Let's think first: Macroevolution is evolution over geologic time above the level of the species. Macroevolution is said to be the change from one species to another. Change from one species to another is evolution over geologic time above the level of the species.... So the answer is [(G)]
What does not normally lay eggs?
Options:
- (A) swea
- (B) insects
- (C) Mammal
- (D) chickens
- (E) cows
- (F) animals
- (G) parasites
- (H) ducks
--
Let's think first: Platypus females lay their eggs in a burrow. Although the platypus is a mammal, it is bizarre and lays eggs . Mammals do not usually lay eggs.... So the answer is [(C)]
All of what have a characteristic life cycle that includes alternation of descendants?
Options:
- (A) Conifers
- (B) flowers
- (C) apples
- (D) plants
- (E) amoeba
- (F) Trees
- (G) Oak
- (H) Spruce
--
Let's think first: All plants have a characteristic life cycle that includes alternation of generations. Descendant includes descendants of all generations. All plants have a characteristic life cycle that includes alternation of descendants.... So the answer is [(D)]
Vesicle transport is a form of _.
Options:
- (A) diffusion
- (B) animals
- (C) communication
- (D) movement
- (E) direct energy
- (F) resistance
- (G) Vibrations.
- (H) motion
--
Let's think first: Vesicle transport requires energy, so it is also a form of active transport. Active transport is another form of diffusion. Vesicle transport is a form of diffusion.... So the answer is [(A)]
Cells have multiple repair mechanisms to fix mutations in what?
Options:
- (A) Veins and arteries.
- (B) Most plants
- (C) the body's largest organ
- (D) members of their own species
- (E) wavelengths and photons
- (F) epidermis and dermis
- (G) deoxyribonucleic acid
- (H) peachleaf willow
--
Let's think first: Cells have multiple repair mechanisms to fix mutations in DNA. DNA DNA is deoxyribonucleic acid. Cells have multiple repair mechanisms to fix mutations in deoxyribonucleic acid.... So the answer is [(G)]
Electron transport requires which of the following?
Options:
- (A) electron microscope
- (B) sodium
- (C) Energy.
- (D) Oxygen
- (E) fission
- (F) warmth
- (G) flagellum
- (H) Energy
--

[Assistant] Let's think first: Electron transport is the final stage of aerobic respiration. Aerobic respiration occurs only in the presence of oxygen. Electron transport occurs only in the presence of oxygen.... So the answer is [(D)]


[User]
Cells are what, so they are the building blocks of organisms?
Options:
- (A) Most plants
- (B) so small
- (C) all matter
- (D) homogenous
- (E) so deadly
- (F) so fortunate
- (G) so big
- (H) bacteria OK. Let's think hard:

[Assistant]
Cells are the microscopic building blocks of organisms. Cells are so small that they can only be seen under a microscope. Cells are so small, they are the building blocks of organisms.
So, the final answer is (B).


[User]
What is the microscopic building block of any living being?
Options:
- (A) trees
- (B) cell
- (C) oxygen
- (D) moss
- (E) molecule
- (F) plants
- (G) blood
- (H) life
--
Let's think first: Cells are the microscopic building blocks of organisms. Any living being is an organism. Cells are the microscopic building blocks of living beings.... So the answer is [(B)]
How is survival ensured around hydrothermal vents?
Options:
- (A) heat produced
- (B) Eating a lot
- (C) Reproducing quickly
- (D) biological diversity
- (E) vegetation
- (F) Being in a cluster
- (G) Staying far apart
- (H) hydrate their cells
--
Let's think first: Organisms cluster around hydrothermal vents in the ocean floor. To survive, some organisms living near hydrothermal vents have formed close associations. Clusters form around hydrothermal vents to ensure survival.... So the answer is [(F)]
What do organisms use carbon, oxygen, and hydrogen for?
Options:
- (A) agriculture
- (B) It helps them survive
- (C) to destroy energy
- (D) survival
- (E) to store energy
- (F) to waste energy
- (G) heat produced
- (H) to release energy
--
Let's think first: Organisms use lipids to store energy. Lipids Lipids are also composed of carbon, oxygen and hydrogen. Organisms use carbon, oxygen, and hydrogen to store energy.... So the answer is [(E)]
Why do dogs play?
Options:
- (A) To keep their body heat.
- (B) To win a fight
- (C) it keeps an organism warm
- (D) increases a body's strength
- (E) To learn to behave
- (F) allow growth
- (G) To become dominant
- (H) To spend time alone
--
Let's think first: Playing is just one of many ways that mammals and other animals learn how to behave. Cats are Mammals that Shed Dogs are Mammals that Wag their tails. Playing is just one of many ways that dogs learn to behave.... So the answer is [(E)]
An animal's outer shell protects internal organs and:
Options:
- (A) food and shelter
- (B) epidermal
- (C) Epidermis
- (D) all matter
- (E) soft tissues
- (F) alveoli
- (G) warmth
- (H) layers of fat
--
Let's think first: Bone provides protection for soft tissues and internal organs. Bones provide an outer shell to protect our internal organs. Soft tissues and internal organs need an outer shell for protection.... So the answer is [(E)]
Aggression is behavior that is intentionally what?
Options:
- (A) friendly
- (B) complex
- (C) loud
- (D) made
- (E) negative
- (F) quiet
- (G) abusive
- (H) kicked
--

[Assistant] Let's think first: Aggression is behavior that is intended to cause harm or pain. Abuse means causing intentional pain or harm. Aggression is behavior that is intentionally abusive.... So the answer is [(G)]


[User]
[[Ques]]: The vascular cambria allows:
Options:
- (A) Exfoliation
- (B) roots to grow
- (C) plant
- (D) movement
- (E) Animal survival
- (F) soil
- (G) liver
- (H) rapid expansion
[[Ans]]: [Roots grow in length and width from primary and secondary meristem. Vascular cambium is a primary meristem. Roots grow in length and width from the vascular cambium.]
[(B)]

[[Ques]]: The depletion of what results in higher levels of uv radiation reaching earth?
Options:
- (A) O3
- (B) O2
- (C) oil
- (D) pan
- (E) h2o
- (F) CO2
- (G) DNA
- (H) DDT
[[Ans]]: [Ozone depletion results in higher levels of UV radiation reaching Earth. Ozone is represented chemically as O3. O3 depletion results in higher levels of UV radiation reaching Earth.]
[(A)]

[[Ques]]: Individuals who move into or out of a community increase:
Options:
- (A) homogeneity
- (B) energy usage
- (C) power
- (D) monoculture
- (E) competition
- (F) adding heat
- (G) population
- (H) gene flow
[[Ans]]:

[Assistant]
[Gene flow occurs when individuals move into or out of a population. Community health focuses on the health of populations or groups. Gene flow occurs when individuals move into or out of a community.]
[(H)]


[User]
Use reasoning to answer the following question. What can be determined by the average number of people per one unit of area?
Options:
- (A) hygeine
- (B) emissions
- (C) animals
- (D) growth
- (E) forces
- (F) health
- (G) education
- (H) people

[Assistant]
Population density is the average number of individuals per unit of area or volume. Another measure of growth is population density. Growth of an area can be determined by the average number of people per unit of area.
So, the answer is (D).


[User]
Question: Wetlands are a very important type of what?
Options:
- (A) forest land
- (B) allow growth
- (C) Plants growth
- (D) swamp
- (E) storing water
- (F) district
- (G) animals
- (H) ecosystem
Let's be accurate as possible and think step-by-step.

[Assistant]
Wetlands are extremely important biomes. Biomes are global ecosystems. Wetlands are extremely important ecosystems.
The answer: (H).


[User]
Freshwater biomes contain water that contains little to no what?
Options:
- (A) cations
- (B) Acids
- (C) Nutrients
- (D) sodium
- (E) Pollution
- (F) animals
- (G) plants
- (H) water
--
Let's think first: Freshwater biomes have water that contains little or no salt. Another name for salt is sodium. Freshwater biomes have water that contains little or not sodium.... So the answer is [(D)]
Which of the following affects neurons?
Options:
- (A) nerves
- (B) voltage
- (C) Dehydration
- (D) electrically
- (E) heat
- (F) Botulism
- (G) fever
- (H) temperature
--
Let's think first: Neurons are the structural and functional units of the nervous system. Botulism affects the nervous system. Botulism affects neurons.... So the answer is [(F)]
What is secreted by organisms like frogspawn to become a reef?
Options:
- (A) exocrine glands
- (B) food and shelter
- (C) exoskeleton
- (D) bones
- (E) Energy
- (F) Chemical energy
- (G) plasma
- (H) Energy.
--
Let's think first: Many corals secrete an exoskeleton that builds up to become a coral reef. Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals. Organisms like frogspawns secrete an exoskeleton that builds up to become a reef.... So the answer is [(C)]
Most ecosystems get energy from what in the atmosphere?
Options:
- (A) fires
- (B) Sun
- (C) wind
- (D) summer
- (E) oxygen
- (F) Light
- (G) heat
- (H) H20
--
Let's think first: Most ecosystems get energy from sunlight. On Earth, energy from sunlight heats the atmosphere more at the equator than at the poles. Most ecosystems get energy from heat in the atmosphere.... So the answer is [(G)]
What are killer whales?
Options:
- (A) red and black
- (B) They have thick fur
- (C) dangerous
- (D) sharks
- (E) deep sea creatures
- (F) marine species
- (G) Absorb light
- (H) animals
--
Let's think first: Marine species live mainly in shallow coastal waters. Killer whales prefer shallow and colder coastal waters. Killer whales are a marine species.... So the answer is [(F)]
What are critical for erectile health?
Options:
- (A) fur and fat
- (B) Energy.
- (C) Energy
- (D) sweating
- (E) exercise
- (F) arteries
- (G) strength
- (H) a cuticle
--

[Assistant] Let's think first: Arteries generally carry oxygen-rich blood. Oxygen-rich blood is critical for erectile health. Arteries are critical for erectile health.... So the answer is [(F)]


[User]
q: Organells found in the cells of plants and algae enable many things, including:
Options:
- (A) movement
- (B) photosyntehsis
- (C) food and shelter
- (D) sugar
- (E) glucose
- (F) organic
- (G) Energy.
- (H) survival
a: (B)... Explanation: Chloroplasts are organelles that are found in the cells of plants and algae. Chloroplasts Chloroplasts serve as the site of photosynthesis. The site of photosynthesis in plant and algae cells is found within organelles. That's why the answer is (B).

q: How can animals with six legs detect sound?
Options:
- (A) thorax
- (B) Refract it
- (C) electricity
- (D) they bend
- (E) wings
- (F) environment
- (G) pupils
- (H) antennae
a: (H)... Explanation: Some insects can use their antennae to detect sound. Every insect has six legs, that's an insect. Animals with six legs can use their antennae to detect sound. That's why the answer is (H).

q: If an animal has a spinal column in their skeletal system what is it called?
Options:
- (A) skeletal animal
- (B) vertebrate
- (C) A Greek letter
- (D) invertebrated
- (E) organ
- (F) critical organs
- (G) spined animal
- (H) epidermal
a: (B)... Explanation: Vertebrates are animals that have a backbone. Vertebrates generally have a backbone called the spinal column. Vertebrates are animals that have a spinal column in their skeletal system. That's why the answer is (B).

q: What does not normally lay eggs?
Options:
- (A) swea
- (B) insects
- (C) Mammal
- (D) chickens
- (E) cows
- (F) animals
- (G) parasites
- (H) ducks
a:

[Assistant] (C)... Explanation: Platypus females lay their eggs in a burrow. Although the platypus is a mammal, it is bizarre and lays eggs . Mammals do not usually lay eggs. That's why the answer is (C).


[User]
q: How do cells grow and repair themselves?
Options:
- (A) mitosis
- (B) alveoli
- (C) retina
- (D) rest
- (E) recovery
- (F) exercise
- (G) ligt
- (H) mechanical
a: (A)... Explanation: Cell division is how organisms grow and repair themselves. Mitosis is cell division. Organisms grow and repair themselves through mitosis. That's why the answer is (A).

q: Where does intense activity occur in a plant?
Options:
- (A) Roots
- (B) Buds
- (C) bamboo
- (D) fields
- (E) Summer
- (F) years
- (G) Hairs
- (H) Petals
a: (A)... Explanation: Roots have primary and secondary meristems for growth in length and width. Meristems are zones of intense activity. Roots are zones of intense activity. That's why the answer is (A).

q: What is the process of breaking down food proteins into energy or heat?
Options:
- (A) dissecting
- (B) dehydration
- (C) elimination
- (D) energy
- (E) digestion
- (F) Cooking
- (G) calorie retention
- (H) Evaporation
a: (E)... Explanation: Digestion is the process of breaking down food into components the body can absorb. Food proteins are changed into energy or heat to be used or absorbed by the body. Digestion is the process of breaking down food proteins into energy or heat. That's why the answer is (E).

q: What size are cells?
Options:
- (A) either huge or tiny
- (B) non existent
- (C) dense
- (D) large
- (E) white
- (F) tiny
- (G) dead
- (H) albino
a:

[Assistant] (F)... Explanation: Cells vary in size as well as shape, but all cells are very small. Atoms are tiny particles that are too small to see. Cells vary in size as well as shape, but all cells are very tiny. That's why the answer is (F).


[User]
Let's think step by step! The cells that produce antibodies are key in what system?
Options:
- (A) health
- (B) T cells
- (C) vision
- (D) humans
- (E) macrophages
- (F) B cells
- (G) disease
- (H) immune
The thinking starts now:

[Assistant] Lymphocytes are the key cells involved in the immune response. B lymphocytes produce antibodies . The key cells involved in the immune response produce antibodies. The final answer: (H).


[User]
Question to you: What is a potential outcome of genetic mutation?
Options:
- (A) HIV
- (B) albino
- (C) anemia
- (D) pizza eating turtles
- (E) genealogy
- (F) SNPs
- (G) biology
- (H) death.
Let's reason step-by-step:

[Assistant] Mutations may change the structure of a chromosome or just change a single nucleotide. SNPs involve polymorphisms at the single nucleotide level. Mutations may change the structure of a chromosome or just cause SNPs. Final answer: (F).


[User]
Q: What leads to evolution?
Options:
- (A) Plants growth
- (B) competition
- (C) Adatation
- (D) our star
- (E) Experimentation
- (F) Stagnation
- (G) environment
- (H) Information
Let's think step by step below.

[Assistant]
Evolution occurs by a process called natural selection. Adaptation is the result of natural selection. Adaptation results in evolution.
Thus, the answer is (C).


[User]
[Q] What is required before a chemical change?
Options:
- (A) kinetic energy
- (B) energy usage
- (C) activation push
- (D) activation energy
- (E) activation switch
- (F) activation power
- (G) Burning fuel and air
- (H) Evaporation
[A] Here's my solution: All chemical reactions require activation energy to get started. Chemical changes are a result of chemical reactions. Activation energy must be used before a chemical change happens. The answer is (D).

[Q] Echinoderms are resistant to some:
Options:
- (A) starfish
- (B) enzymes
- (C) Toxicity
- (D) pesticide
- (E) parasites
- (F) toxins
- (G) boats
- (H) chemicals
[A] Here's my solution: Echinoderms lack a centralized nervous system. From animal experiments, it seems to be a central nervous system toxin. Echinoderms are resistant to some toxins. The answer is (F).

[Q] Which has a unique water vascular system?
Options:
- (A) roots
- (B) trees
- (C) Conifers
- (D) Echinoids
- (E) fur seals
- (F) Most plants
- (G) ferns
- (H) bushes
[A] Here's my solution: Echinoderms have a unique water vascular system with tube feet. Another group of echinoderms are the echinoids. Echinoids have unique water vascular system was tube feet. The answer is (D).

[Q] Many corals secrete what to form a coral reef?
Options:
- (A) Chlorophyll
- (B) salt and water.
- (C) The area was once underwater
- (D) Chemical energy
- (E) aqueous solution
- (F) Organic compounds
- (G) gastropod shells
- (H) hard outer covering
[A]

[Assistant] Here's my solution: Many corals secrete an exoskeleton that builds up to become a coral reef. An insect has a hard outer covering called an exoskeleton. Many corals secrete a hard outer covering that builds up to become a coral reef. The answer is (H).


[User]
Where is the sea tiger found?
Options:
- (A) eroded
- (B) ocean
- (C) warm
- (D) fossils
- (E) dense
- (F) ligt
- (G) embryos
- (H) dead Let's solve this problem gradually.

[Assistant] Marine biomes are found in the salt water of the ocean. Another animal that lives within the Marine Biome is a sea tiger. Sea tigers are found in the salt water of the ocean. So the final answer is (B).


[User]
Question: What is the reason beak variation came about in birds?
Options:
- (A) By wind and rain
- (B) Attracting mates
- (C) It helps them survive
- (D) the Earth being tilted
- (E) Competing species evolving
- (F) it keeps an organism warm
- (G) To assist in flying
- (H) Warding off predators
Let's be accurate as possible and think step-by-step.

[Assistant]
Specialization occurs when competing species evolve different adaptations. Beaks show a lot of variation and specialization for different functions. Beak variation came about because of competing species evolving different adaptations.
The answer: (E).


[User]
Damaged dna might benefit from:
Options:
- (A) resistance
- (B) cellular repair
- (C) mutagens
- (D) UV rays
- (E) recovery
- (F) radiation
- (G) Electrical energy
- (H) flow of electrons Think carefully first, then make a decision. My thoughts:

[Assistant] Cells have multiple repair mechanisms to fix mutations in DNA. And if the damaged DNA is duplicated, it causes mutation. Cells have multiple repair mechanisms to fix damaged DNA. So the answer is (B).


[User]
Herbivores eat producers or other what?
Options:
- (A) roadkill
- (B) Most plants
- (C) living things
- (D) scarce resources
- (E) carcasses
- (F) dead things
- (G) Chemical energy
- (H) Organic compounds
--
Let's think first: Consumers take in food by eating producers or other living things. Herbivores eat producers and are called first order consumers. Herbivores eat producers or other living things.... So the answer is [(C)]
------
Where is force on the vessel walls highest?
Options:
- (A) arteries
- (B) feet
- (C) resistance
- (D) tibial vein
- (E) strong
- (F) capillaries
- (G) femoral vein
- (H) Summer
--
Let's think first: Blood pressure is highest in arteries and lowest in veins. What is Blood Pressure Blood pressure is the pressure on the blood vessel walls. Force on the vessel walls is highest in arteries and lowest in veins.... So the answer is [(A)]
------
What is generally similar across species?
Options:
- (A) tail fins
- (B) our star
- (C) the eyes
- (D) vision
- (E) mating
- (F) Flowers
- (G) bushes
- (H) alpacas
--
Let's think first: Mating is generally preceded by courtship. Courtship is similar across species. Mating is generally similar across species.... So the answer is [(E)]
------
Oncogenes promote the division of cells using the damaged form of what?
Options:
- (A) deoxyribonucleic acid
- (B) oncogenes
- (C) proteins
- (D) Chemical energy
- (E) epidermis and dermis
- (F) the body's largest organ
- (G) Veins and arteries.
- (H) healthy cells
--

[Assistant]
Let's think first: Oncogenes promote the division of cells with damaged DNA. DNA DNA is deoxyribonucleic acid. Oncogenes promote the division of cells with damaged deoxyribonucleic acid.... So the answer is [(A)]
------


[User]
Introns are areas that
Options:
- (A) it keeps an organism warm
- (B) Plant reproduction
- (C) the wearing away of rock
- (D) do not code for protein
- (E) Something coming from a gland
- (F) Plant growth is reduced
- (G) allow growth
- (H) produce offspring OK. Let's think hard:

[Assistant]
Introns are regions that do not code for proteins. An area is a rectangular region of cells. Introns are areas that do not code for proteins.
So, the final answer is (D).


[User]
What is hair not considered?
Options:
- (A) lack
- (B) zinc
- (C) loss
- (D) Fat
- (E) long
- (F) CFCs
- (G) gold
- (H) p53 Let's be accurate as possible.

[Assistant]
Hair helps to insulate and protect the body. Lean body mass and body fat are derived from total body water. Hair is not considered fat.
The final answer: (D).


[User]
What do viruses contain the most of?
Options:
- (A) Chemical energy
- (B) layers of fat
- (C) ribonucleic acid
- (D) cytoplasm
- (E) germs
- (F) harmful substances
- (G) deadly and devastating
- (H) deoxyribonucleic acid Let's solve this problem gradually.

[Assistant] Viruses contain DNA but not much else. DNA DNA is deoxyribonucleic acid. Viruses contain deoxyribonucleic acid, but not much else. So the final answer is (H).


[User]
What is the process of organized images falling on the retina?
Options:
- (A) slows
- (B) collage
- (C) a wave
- (D) motion
- (E) conjunction
- (F) photochemistry
- (G) Seesaw
- (H) sight
--
Let's think first: Sight is the ability to sense light, and the eye is the organ that senses light. Eyes detect light, organized into images that fall on the retina. Sight is the process of organized images falling on the retina.... So the answer is [(H)]
The most ancient what are trees with woody trunks?
Options:
- (A) it needs them
- (B) leafy greens
- (C) more abundant
- (D) Leeuwenhoek
- (E) flowering buds
- (F) pollen
- (G) graptolites
- (H) seed plants
--
Let's think first: Most modern gymnosperms are trees with woody trunks. Gymnosperms are the most ancient seed plants. The most ancient seed plants are trees with woody trunks.... So the answer is [(H)]
What animal found on earth would belong to the phylum platyhelmintes?
Options:
- (A) bilaterally symmetrical worms
- (B) Something with a head, thorax, and abdomen
- (C) remains of prehistoric life
- (D) Something that makes plants green
- (E) Microscopic organisms
- (F) female sex cells
- (G) it helps plants in growing
- (H) share properties
--
Let's think first: Flatworms belong to the phylum Platyhelminthes. Flatworms are bilaterally symmetric. Bilaterally symmetric worms belong to the phylum Platyhelminthes.... So the answer is [(A)]
What type of plant produces seeds in cones?
Options:
- (A) Softwoods.
- (B) Conifers
- (C) Aloe.
- (D) Most plants
- (E) Sunflower seeds.
- (F) white
- (G) epidermal
- (H) Fern plant.
--
Let's think first: Gymnosperms are vascular plants that produce seeds in cones. Softwoods, on the other hand, are gymnosperms . Softwoods are vascular plants that produce seeds in cones.... So the answer is [(A)]
What is not a cell?
Options:
- (A) all matter
- (B) layers of fat
- (C) illness
- (D) bacteria
- (E) influenza
- (F) Leptospirosis
- (G) an object
- (H) hydrocarbons
--
Let's think first: Viruses are not cells. Influenza viruses mutate. Influenza is not a cell.... So the answer is [(E)]
What describes something that requires activation energy to get started?
Options:
- (A) igniting fuel and oxidiser
- (B) heating liquids
- (C) Fully cooking the oysters
- (D) Riding a bike
- (E) an engine
- (F) burning coal
- (G) chemical equations
- (H) Firecrackers
--

[Assistant] Let's think first: All chemical reactions require activation energy to get started. Chemical equations describe chemical reactions. Chemical equations describe something that requires activation energy to get started.... So the answer is [(G)]


[User]
question: What can fatty acids be combined with, in addition to carbon and oxygen?
Options:
- (A) Sodium
- (B) Energy.
- (C) glucose
- (D) Carbon Dioxide
- (E) Fuel cells
- (F) Uranium
- (G) Hydrogen
- (H) Energy
answer: Lipids may consist of fatty acids alone, or they may contain other molecules as well. Lipids Lipids are also composed of carbon, oxygen and hydrogen. Carbon, oxygen, and hydrogen can be combined with fatty acids.
The answer is (G)

question: Prokaryotes lack regions that do not code for proteins, while this type of living being has them:
Options:
- (A) bioaerosols
- (B) layers of fat
- (C) orchids
- (D) animals
- (E) critical organs
- (F) sensory neurons
- (G) eukaryotes
- (H) it needs them
answer: Introns are regions that do not code for proteins. Prokaryotes lack introns, whereas eukaryotes contain introns. Prokaryotes lack regions that do not code for proteins, while eukaryotes do have them.
The answer is (G)

question: Courtship is a behavior that animals use to attract what?
Options:
- (A) a pollinator
- (B) a partner
- (C) animals
- (D) a child
- (E) honeybees
- (F) humans
- (G) reproduce
- (H) a host
answer: Courtship is behavior that is intended to attract a mate. Mating Ducks usually look for a mate or partner in winter. Courtship is behavior that is intended to attract a partner.
The answer is (B)

question: What is under the same family as worms?
Options:
- (A) animals
- (B) parasites
- (C) bacteria
- (D) eels
- (E) ant
- (F) leeches
- (G) snakes
- (H) infected
answer:

[Assistant]
Annelids are worms such as the familiar earthworm. Annelids include earthworms and leeches. Leeches are related to worms.
The answer is (F)


[User]
What are cell walls made of?
Options:
- (A) fossils
- (B) peat
- (C) moss
- (D) cations
- (E) Carbon
- (F) Fiber
- (G) Fungi
- (H) sodium
--
Let's think first: Plants use cellulose for their cell walls. Basically, fiber is cellulose . Cells walls are fiber.... So the answer is [(F)]
What tells a cell what to do?
Options:
- (A) electricity
- (B) proteins
- (C) A computer
- (D) Energy
- (E) nerves
- (F) sweating
- (G) heat energy
- (H) Energy.
--
Let's think first: Molecules of DNA are encoded with instructions that tell cells what to do. DNA encodes the information for protein sequences. Proteins tell cells what to do.... So the answer is [(B)]
Cells that divide uncontrollably may form _.
Options:
- (A) masses of eukaryotic origin.
- (B) masses of neoplastic origin
- (C) cause people to become sick.
- (D) Microscopic organisms
- (E) masses of prokaryotic origin.
- (F) masses of epithelial origin.
- (G) Veins and arteries.
- (H) Wither and die
--
Let's think first: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells. Tumor Tumors are masses of neoplastic origin. Cells that divide uncontrollably may form masses of neoplastic origin.... So the answer is [(B)]
When snow falls to the ground and soaks into the ground, what can it become?
Options:
- (A) steam
- (B) ice
- (C) Sediment
- (D) thermal heat
- (E) dangerous
- (F) flooding
- (G) groundwater
- (H) rainfall
--
Let's think first: Some precipitation that falls on land may soak into the ground, becoming groundwater. Most of the precipitation falls as snow. Some snow that falls on land may soak into the ground becoming groundwater.... So the answer is [(G)]
Biodiversity generally increases from the poles to the area where what is found?
Options:
- (A) animals
- (B) Fjords
- (C) Most plants
- (D) Icebergs
- (E) Rainforests
- (F) Tundra
- (G) our planet
- (H) Animal survival
--
Let's think first: Biodiversity generally increases from the poles to the equator. Most rainforests lie near the equator. Biodiversity generally increases from the poles to the area where the rainforests lie.... So the answer is [(E)]
What obtain their food from plants and cannot make their own food?
Options:
- (A) bacteria
- (B) Flowers
- (C) trees
- (D) lichen
- (E) animals
- (F) fungi
- (G) humans
- (H) grass
--

[Assistant] Let's think first: Heterotrophs are living things that cannot make their own food. All animals are heterotrophic and obtain their food from plants. Animals obtain their food from plants and cannot make their own food.... So the answer is [(E)]


[User]
The average weather in an area during an era is called:
Options:
- (A) Summer
- (B) epoch
- (C) good
- (D) autumn
- (E) time period
- (F) mild
- (G) Pleistocein
- (H) climate
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Climate is the average weather in an area over a long period of time. An era is a period of time in which events occur. Climate is the average weather in an area during an era. The answer: (H).


[User]
Question to you: What can slowly dissolve carbon in sedimentary rock?
Options:
- (A) hydrocarbons
- (B) acetic acid
- (C) precipitation
- (D) evaporation
- (E) rivers and streams
- (F) puddles
- (G) ponds
- (H) nitrogen.
Let's reason step-by-step:

[Assistant] Flowing water can slowly dissolve carbon in sedimentary rock. Rivers and streams are bodies of fresh, flowing water. Rivers and streams can slowly dissolve carbon in sedimentary rock. Final answer: (E).


[User]
Where are slime molds found?
Options:
- (A) flowers
- (B) loose dirt
- (C) animals
- (D) leaves
- (E) loose soil
- (F) swamp vegetation
- (G) rotting trees
- (H) an organism's body
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Slime molds are fungus-like protists commonly found on rotting logs and compost. Once the trees are cut, they become logs . Slime molds are fungus-like protists commonly found on rotting trees and compost. The answer: (G).


[User]
What are organisms that make food for themselves and other organisms?
Options:
- (A) mushrooms
- (B) green plants
- (C) plants
- (D) mammals
- (E) agriculture
- (F) honeybees
- (G) photosynthesis
- (H) animals
--
Let's think first: Producers are organisms that produce food for themselves and other organisms. Green plants are producers . Green plants are organisms that make food for themselves and other organisms.... So the answer is [(B)]
Specialization occurs when competing groups of interbreeding individuals evolve different what?
Options:
- (A) color of leaves
- (B) fur and fat
- (C) forces
- (D) colors
- (E) frontal zones
- (F) graptolites
- (G) sensory neurons
- (H) adaptations
--
Let's think first: Specialization occurs when competing species evolve different adaptations. Species is a group of interbreeding individuals. Specialization occurs when competing groups of interbreeding individuals evolve different adaptations.... So the answer is [(H)]
Where do rays enter the eye?
Options:
- (A) glass
- (B) Summer
- (C) pupil
- (D) lenses
- (E) harmful
- (F) the sun
- (G) photons
- (H) skin
--
Let's think first: Light enters the eye through an opening called the pupil. Light rays are focussed on the retina. When rays are shined at the eyes, they enter an opening called the pupil.... So the answer is [(C)]
What is produced when plastic is made out of petroleum?
Options:
- (A) dangerous
- (B) bioaerosols
- (C) emissions
- (D) hydrocarbons
- (E) pollution
- (F) heat produced
- (G) Pesticides
- (H) heat energy
--
Let's think first: Plastics are made from petroleum and produce toxic waste. Pollution issues include toxic waste disposal. Plastics are made from petroleum and produce pollution.... So the answer is [(E)]
What are flower cell walls made of?
Options:
- (A) cellular
- (B) lmestone
- (C) cellulitis
- (D) strong
- (E) cellulose
- (F) cellulite
- (G) heat energy
- (H) acetic acid
--
Let's think first: Plants are multicellular eukaryotes with cell walls made of cellulose. Flowers are plant organs of reproduction. Flowers are multicellular eukaryotes with cell walls made cellulose.... So the answer is [(E)]
Ethologists study how animals behave in animals'
Options:
- (A) Summer
- (B) state
- (C) Birds
- (D) life
- (E) seasons
- (F) health
- (G) homes
- (H) fields
--

[Assistant] Let's think first: Ethologists usually study how animals behave in their natural environment. Environments are animals homes. Ethologists usually study how animals behave in the animals' homes.... So the answer is [(G)]


[User]
(question). There are what who study how animals behave in their natural environment.
Options:
- (A) infants
- (B) heat or cold
- (C) insects
- (D) sensory neurons
- (E) scientists
- (F) people
- (G) humans
- (H) reptiles
(answer). Ethologists usually study how animals behave in their natural environment. Ethologists are scientists who study animals in their natural habitats. There are scientists who study how animals behave in their natural environment.
The answer is (E)

(question). What can hpv cause?
Options:
- (A) a hazard
- (B) harm
- (C) cancer
- (D) sweating
- (E) heightened abilities
- (F) anemia
- (G) good health
- (H) comfort
(answer). Some viruses can cause cancer. Human papillomavirus, or HPV, is the name of a group of viruses. HPV can cause cancer.
The answer is (C)

(question). Cancer and tumors are a result of specific types of:
Options:
- (A) organs
- (B) cigarettes
- (C) radiation
- (D) layers of fat
- (E) gene damage
- (F) rays or beams
- (G) Chemical energy
- (H) the skin
(answer). Cancer is a disease in which cells divide out of control. With specific types of gene damage, the cell starts dividing out of control, forming a tumor. Cancer and tumors are a result of specific types of gene damage.
The answer is (E)

(question). Neurotransmitters and hormones are what in their function?
Options:
- (A) cells
- (B) organic
- (C) inorganic
- (D) complex
- (E) Vibrates
- (F) warm
- (G) properties
- (H) similar
(answer).

[Assistant]
Hormones are chemical messengers that control many body functions. Neurotransmitters are chemical messengers in the brain. Hormones and neurotransmitters behave in common ways.
The answer is (H)


[User]
Q: What size are cells?
Options:
- (A) either huge or tiny
- (B) non existent
- (C) dense
- (D) large
- (E) white
- (F) tiny
- (G) dead
- (H) albino
A: So, my chain of thought: Cells vary in size as well as shape, but all cells are very small. Atoms are tiny particles that are too small to see. Cells vary in size as well as shape, but all cells are very tiny. The answer is (F).

Q: What live mainly in shallow coastal waters?
Options:
- (A) Sea species
- (B) Coast guards
- (C) animals
- (D) Live Whales
- (E) Shallow people
- (F) fur seals
- (G) a fish
- (H) parasites
A: So, my chain of thought: Marine species live mainly in shallow coastal waters. Marine Science Marine science is the study of the sea. Sea species live mainly in shallow coastal waters. The answer is (A).

Q: What do animals try do in winter?
Options:
- (A) shed fur
- (B) expand
- (C) ligt
- (D) rest
- (E) adapt
- (F) use an adapter
- (G) survive
- (H) die
A:

[Assistant] So, my chain of thought: Animals adapt to cold temperatures. And in winter it s very cold. In winter animals can adapt. The answer is (E).


[User]
How do proteins leave the er?
Options:
- (A) aqueous solution
- (B) it's state
- (C) Veins and arteries.
- (D) Move to another area
- (E) allow growth
- (F) active transport
- (G) It expands
- (H) movement
--
Let's think first: Vesicle transport requires energy, so it is also a form of active transport. Proteins leave the ER in transport vesicles 5. Proteins leave the ER via active transport.... So the answer is [(F)]
Some viruses have an envelope of
Options:
- (A) fats and proteins
- (B) allow growth
- (C) aerobic capacity
- (D) keeps the organism warm
- (E) wavelengths and photons
- (F) Chemical energy
- (G) looseness
- (H) To keep their body heat.
--
Let's think first: Some viruses have an envelope of phospholipids and proteins. Phospholipids are body fats, too. Some viruses have an envelope of fats and proteins.... So the answer is [(A)]
Which can move?
Options:
- (A) Raft
- (B) light energy
- (C) vehicles
- (D) insects
- (E) protists
- (F) bicycle
- (G) animals
- (H) an object
--
Let's think first: Most protists have motility. All animals are motile, moving about at some point in their life cycle. Most protists are able to move.... So the answer is [(E)]
What does a hairy organism have under its skin to help insulate the body?
Options:
- (A) fat
- (B) hair
- (C) food
- (D) cell
- (E) nerves
- (F) coat
- (G) fur
- (H) marrow
--
Let's think first: Mammals have a layer of fat under the skin to help insulate the body. If it has hair it is a mammal. An organism with hair has a layer of fat under the skin to help insulate the body.... So the answer is [(A)]
Courtship is a behavior that animals use to attract what?
Options:
- (A) a pollinator
- (B) a partner
- (C) animals
- (D) a child
- (E) honeybees
- (F) humans
- (G) reproduce
- (H) a host
--
Let's think first: Courtship is behavior that is intended to attract a mate. Mating Ducks usually look for a mate or partner in winter. Courtship is behavior that is intended to attract a partner.... So the answer is [(B)]
Echidnas reproduce how?
Options:
- (A) asexually
- (B) by indirect light
- (C) spread flower seeds
- (D) during the day
- (E) by birthing live young
- (F) by laying eggs
- (G) by budding
- (H) with their fur
--

[Assistant] Let's think first: Monotremes are mammals that reproduce by laying eggs. Examples of monotremes are the Platypus and Echidna. Echidnas reproduce by laying eggs.... So the answer is [(F)]


[User]
When snow falls to the ground and soaks into the ground, what can it become?
Options:
- (A) steam
- (B) ice
- (C) Sediment
- (D) thermal heat
- (E) dangerous
- (F) flooding
- (G) groundwater
- (H) rainfall Let's be accurate as possible.

[Assistant]
Some precipitation that falls on land may soak into the ground, becoming groundwater. Most of the precipitation falls as snow. Some snow that falls on land may soak into the ground becoming groundwater.
The final answer: (G).


[User]
Insulin is a hormone that helps absorb what from the blood?
Options:
- (A) hormones
- (B) blood cells
- (C) glucose
- (D) Energy
- (E) water
- (F) Energy.
- (G) Joules
- (H) hydration
--
Let's think first: Insulin is a hormone that helps cells absorb sugar from the blood. Blood Sugar Glucose is sugar. Insulin is a hormone that helps cells absorb glucose from the blood.... So the answer is [(C)]
What is needed from cells for phosphatases to keep the proper ph?
Options:
- (A) plasma
- (B) secretion of bases only
- (C) secretion of proteins
- (D) metabolic reaction
- (E) it helps plants in growing
- (F) Positive charges
- (G) Transfers energy
- (H) secretion of acids and bases
--
Let's think first: Cells secrete acids and bases to maintain the proper pH for enzymes to work. Phosphatases are enzymes that remove phosphates from other enzymes. Cells secrete acids and bases to keep the proper pH for phosphatases to work properly.... So the answer is [(H)]
For animals, displays of color can be viewed as:
Options:
- (A) spectrum
- (B) prudishness
- (C) rainbow
- (D) courtship
- (E) positive
- (F) harm them
- (G) produce light
- (H) Movement
--
Let's think first: Courtship is behavior that is intended to attract a mate. Almost all animals display colors to attract a mate or to scare off a predator. Courtship can be manifested by displays of color.... So the answer is [(D)]
What is a biomass' position in the food chain called?
Options:
- (A) ecosystem
- (B) more abundant
- (C) action
- (D) food swamp
- (E) Chemical energy
- (F) Trophic level
- (G) permineralization
- (H) It decreases
--
Let's think first: Biomass is the total mass of organisms at a trophic level. Trophic level refers to the organisms position in the food chain. A biomass' position in the food chain is a trophic level.... So the answer is [(F)]
What are bacteria and algae that use sunlight to make food?
Options:
- (A) birds
- (B) carnivorous organisms
- (C) Transfers energy
- (D) competing for resources
- (E) planktonic plants
- (F) By wind and rain
- (G) fish
- (H) Chemical energy
--
Let's think first: Phytoplankton are bacteria and algae that use sunlight to make food. Planktonic plants are called phytoplankton. Planktonic plants are bacteria and algae that use sunlight to make food.... So the answer is [(E)]
How long can antibodies protect the body?
Options:
- (A) As long as antibodies survive
- (B) Slowing the transfer of heat
- (C) For a set time
- (D) by keeping them warm
- (E) it protects them
- (F) Into elderly years
- (G) As long as the human survives
- (H) A compound that donates proton
--

[Assistant] Let's think first: Passive immunity lasts only as long as the antibodies survive in body fluids. Antibodies are administered to the patient in a process called passive immunization. Antibodies are administered to patients for protection but it only helps as long as the antibodies survive in body fluids.... So the answer is [(A)]


[User]
Harm to the respiratory and circulatory systems can come from
Options:
- (A) Greenhouse gases
- (B) hydrocarbons
- (C) Sulfur dioxide
- (D) nitrogen oxides
- (E) burning coal
- (F) fossil fuels
- (G) emissions
- (H) Greenhouse gasses
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Air pollution harms the respiratory and circulatory systems. Nitrogen oxides cause air pollution. Nitrogen oxides harms the respiratory and circulatory systems. The answer: (D).


[User]
Question: Which of the following do not grow using mitosis?
Options:
- (A) skin cells
- (B) genus
- (C) fungi
- (D) lung cells
- (E) blood cells
- (F) parasites
- (G) viruses
- (H) bacteria
Let's be accurate as possible and think step-by-step.

[Assistant]
Populations of viruses do not grow through cell division because they are not cells. Mitosis is cell division. Populations of viruses do not grow through mitosis because they are not cells.
The answer: (G).


[User]
Question to you: One example of an annelid has how many hearts?
Options:
- (A) three
- (B) Five
- (C) white
- (D) warm
- (E) four
- (F) strong
- (G) long
- (H) small.
Let's reason step-by-step:

[Assistant] Annelids are worms such as the familiar earthworm. An earthworm has five hearts. An animal that has five hearts is an annelid. Final answer: (B).


[User]
Hummingbirds are what they are today as a necessary consequence of their relationship to what?
Options:
- (A) a feeder
- (B) humans
- (C) bees
- (D) survival
- (E) animals
- (F) Plants
- (G) Earth
- (H) weeds
--
Let's think first: Some birds are pollinators that co-evolved with plants. Hummingbirds are the most common bird pollinators. Hummingbirds co-evolved with plants.... So the answer is [(F)]
The first tetrapods were
Options:
- (A) major threat to health
- (B) remains of prehistoric life
- (C) in the frog family
- (D) running and lifting
- (E) competing for resources
- (F) warm-blooded
- (G) objects that have mass
- (H) graptolites
--
Let's think first: Amphibians are the first true tetrapods, or vertebrates with four limbs. All frogs are amphibians. Animals in the frog family are the first true tetrapods.... So the answer is [(C)]
Mushrooms are nonphotosynthetic and cannot what?
Options:
- (A) reproduce
- (B) make food to grow
- (C) be seasoned
- (D) Chemical energy
- (E) Change colors
- (F) refract or absorb.
- (G) be eaten
- (H) be absorbed
--
Let's think first: Fungi lack chlorophyll, so they cannot make food by photosynthesis as plants can. Like a mushroom, it lacks chlorophyll and is nonphotosynthetic. Mushrooms are nonphotosynthetic and cannot make food to grow.... So the answer is [(B)]
What organs do both fishes and reptiles have?
Options:
- (A) legs
- (B) they all walk on land
- (C) gills
- (D) the eyes
- (E) protected
- (F) brains
- (G) alveoli
- (H) vision
--
Let's think first: Fish have a centralized nervous system with a brain. Nervous A reptile has a brain and nervous system. Fishes and reptiles have brains.... So the answer is [(F)]
What is a tree with a woody trunk?
Options:
- (A) conifer
- (B) orchids
- (C) plants
- (D) trees
- (E) less water
- (F) vines
- (G) lycophytes
- (H) ferns
--
Let's think first: Most modern gymnosperms are trees with woody trunks. Conifers are examples of gymnosperms. Conifers are trees with woody trunks.... So the answer is [(A)]
What does shivering generate?
Options:
- (A) kinetic
- (B) energy
- (C) friction
- (D) Energy.
- (E) expels heat
- (F) heat
- (G) warmth
- (H) rhythm
--

[Assistant] Let's think first: Shivering occurs when many muscles contract a little bit all at once. Shivering causes muscle contractions to warm the body. The contractions caused by shivering generates warmth.... So the answer is [(G)]


[User]
What lives in large colonies?
Options:
- (A) koalas
- (B) swea
- (C) voles
- (D) bees
- (E) bats
- (F) Birds
- (G) cats
- (H) bears Think carefully first, then make a decision. My thoughts:

[Assistant] Insects may live in large colonies and have complex social behaviors. Honey Bee Honey bees are insects that live in a hive and make honey. Bees live in large colonies and have complex social behaviors. So the answer is (D).


[User]
What do constructions by earthworms help to do?
Options:
- (A) compact soil
- (B) moisten soil
- (C) agriculture
- (D) to move people
- (E) relocation
- (F) aerate soil
- (G) survival
- (H) dry out soil Let's solve this problem gradually.

[Assistant] Earthworm burrows help aerate soil, which is also good for plants. Most species construct burrows. Constructions by earthworms help aerate soil which is good for plants. So the final answer is (F).


[User]
Where is ecosystem complexitiy generally least?
Options:
- (A) humans disturb it
- (B) frontal zones
- (C) in lakes
- (D) at the ocean
- (E) our planet
- (F) at the poles
- (G) mouth of rivers
- (H) at the equator Let's solve this problem gradually.

[Assistant] Biodiversity generally increases from the poles to the equator. Biodiversity contributes to ecosystem complexity. Ecosystem complexity generally increases from the poles to the equator. So the final answer is (F).


[User]
question... Mammals generate heat mainly by what?
Options:
- (A) hugging mammals
- (B) calorie counting
- (C) with their fur
- (D) energy of moving objects
- (E) burning calories
- (F) sweating
- (G) selling fur coats
- (H) flow of electrons
answer... Mammals generate heat mainly by keeping their metabolic rate high. And resting metabolic rate is a big contributor to calories burning. Mammals generate heat mainly by burning calories.
The answer is (E)

question... How do ants communicate to other ants to encourage them to follow?
Options:
- (A) Skywriting
- (B) Electrical energy
- (C) Using a phone to communicate
- (D) Leaving a written communicatio
- (E) Something coming from a gland
- (F) By wind and rain
- (G) Chemical energy
- (H) Leaving chemical trails
answer... Ants communicate with chemicals called pheromones. Physiologically, ants leave a trail of pheromones, which other ants then follow. Ants communicate by leaving chemical trails for other ants to follow.
The answer is (H)

question... Most carcinogens can cause cancer by causing mutations to what?
Options:
- (A) that material's properties
- (B) dexyribonucleic acid
- (C) Veins and arteries.
- (D) Chlorophyll
- (E) harmful substances
- (F) properties
- (G) a lot of human deaths
- (H) characteristics
answer...

[Assistant]
Most carcinogens cause cancer by producing mutations in DNA. DNA DNA is deoxyribonucleic acid. Most carcinogens cause cancer by producing mutations in dexyribonuclein acid.
The answer is (B)


[User]
question... What sea creature reproduces without gamete fusion?
Options:
- (A) white
- (B) amoeba
- (C) embryos
- (D) a fish
- (E) alpacas
- (F) swea
- (G) Schwinn
- (H) polyp
answer... Polyps usually reproduce asexually. Plants with Asexual Reproduction Plants with asexual reproduction have no gamete fusion. Polyps reproduce with no gamete fusion.
The answer is (H)

question... Where can you find marine biomes?
Options:
- (A) Lake Michigan
- (B) The Pacific
- (C) Absorb light
- (D) complex
- (E) the environment
- (F) The Amazon
- (G) The Missisippi
- (H) salt and water.
answer... Marine biomes are found in the salt water of the ocean. Largest of the oceans on Earth is the Pacific Ocean . You can find marine biomes in the Pacific.
The answer is (B)

question... What kind of species are seahorses?
Options:
- (A) horse
- (B) seaweed
- (C) edible
- (D) marine
- (E) a fish
- (F) shellfish
- (G) strong
- (H) food
answer...

[Assistant]
Marine species live mainly in shallow coastal waters. Seahorses inhabit shallow coastal waters, especially seagrass beds, coral reefs and mangrove swamps. Seahorses are marine species.
The answer is (D)