[User]
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
--
Let's think first: Animals use saturated fatty acids to store energy. Fatty Acids Fatty acids are the building blocks of fats. Animals use fats to store energy.... So the answer is [(A)]
What forms in shallow tropical water?
Options:
- (A) ocean
- (B) romance
- (C) bushes
- (D) ferns
- (E) reefs
- (F) bamboo
- (G) fossils
- (H) snorkelling
--
Let's think first: Corals form large colonies in shallow tropical water. Huge colonies of hard corals form coral reefs . Reefs form in shallow tropical water.... So the answer is [(E)]
What live in social groups called prides?
Options:
- (A) insects
- (B) animals
- (C) Pride parades
- (D) humans
- (E) Social networks
- (F) fur seals
- (G) Leo's symbol
- (H) Social circles
--
Let's think first: Lions live in social groups called prides. Leo's symbol is the lion. Leo's symbols live in social groups called prides.... So the answer is [(G)]
How do lions get food?
Options:
- (A) It helps them survive
- (B) They hunt with their group
- (C) Your sensory system picks it up
- (D) layers of fat
- (E) They forage for fruit
- (F) Something coming from a gland
- (G) They appoint one hunter
- (H) They hunt alone
--
Let's think first: Lions live in social groups called prides. Lions hunt together to provide food for the pride. Lions live in groups and hunt together for food.... So the answer is [(B)]
When it rains in the mountains where would the rain fall?
Options:
- (A) looseness of dirt or compost
- (B) Plant growth is reduced
- (C) It used to be covered by water
- (D) Inches or fractions of inches.
- (E) air mass over Earth's surface
- (F) on the windward side
- (G) In the winter
- (H) colder and wetter
--
Let's think first: Precipitation falls on the windward side of the mountain range. Rain is also known as precipitation. Rain would fall on the windward side of the mountain range.... So the answer is [(F)]
What has circulatory system with a two-chambered heart?
Options:
- (A) sharks
- (B) trout
- (C) pan
- (D) toads
- (E) Birds
- (F) animals
- (G) mammals
- (H) Man
--

[Assistant] Let's think first: Fish have a circulatory system with a two-chambered heart. Fish species include salmon and trout. Salmon and trout have a circulatory system with a two-chambered heart.... So the answer is [(B)]


[User]
What does the human immunodeficiency virus destroy?
Options:
- (A) B cells
- (B) bacteria
- (C) helper T cells
- (D) animals
- (E) epidermis and dermis
- (F) critical organs
- (G) an organism's body
- (H) cancer cells
--
Let's think first: HIV infects and destroys helper T cells. HIV, the human immunodeficiency virus, is a retrovirus. The human immunodeficiency virus infects and detroys helper T cells.... So the answer is [(C)]
When does macroevolution over eras occur?
Options:
- (A) relocation
- (B) colder and wetter
- (C) in a few years
- (D) permineralization
- (E) over eras of time
- (F) within a lifetime
- (G) Continents drifting
- (H) in minutes
--
Let's think first: Macroevolution is evolution over geologic time above the level of the species. Geologists break time down into geologic time units called eras . Macroevolution is evolution over eras above the level of the species.... So the answer is [(E)]
What is necessary for a growing child?
Options:
- (A) four limbs
- (B) stamina
- (C) hydration
- (D) food
- (E) pets
- (F) minerals
- (G) plastics
- (H) a measuring stick
--
Let's think first: Minerals are chemical elements that are essential for body processes. Children's bodies are in a developing process. Minerals are necessary for children's growths.... So the answer is [(F)]
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 think first: 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 answer is [(F)]
What are the units of basic information on chromosomes?
Options:
- (A) colors
- (B) heriditary
- (C) sensory neurons
- (D) Most plants
- (E) Joules
- (F) pollen
- (G) A Greek letter
- (H) photons
--
Let's think first: Genes that are located on the same chromosome are called linked genes. Gene A gene is the basic unit of heriditary information. Chromosomes contain the basic units of heriditary information.... So the answer is [(B)]
A response to what occurs when many muscles contract a little at once?
Options:
- (A) heat
- (B) cold
- (C) sweat
- (D) pain
- (E) forces
- (F) stress
- (G) comfort
- (H) motion
--

[Assistant] Let's think first: Shivering occurs when many muscles contract a little bit all at once. Another response to cold is shivering. A response to cold occurs when many muscles contract a little at once.... So the answer is [(B)]


[User]
[Q] 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
[A] Here's my solution: Lymphocytes are the key cells involved in the immune response. Antibodies are synthesised by lymphocytes. Antibodies are involved in the immune response. The answer is (H).

[Q] Plants and snakes live _.
Options:
- (A) almost everywhere
- (B) important habitats
- (C) hydrate their cells
- (D) reproduce
- (E) more abundant
- (F) competing for resources
- (G) the environment
- (H) vegetation
[A] Here's my solution: Plants live just about everywhere on Earth. Snakes live almost everywhere on earth. Plants live just about everywhere snakes do. The answer is (A).

[Q] What can chordates go through?
Options:
- (A) disease
- (B) loss
- (C) skin
- (D) alveoli
- (E) death
- (F) painful
- (G) shock
- (H) illness
[A] Here's my solution: Chordates have a complete digestive system and a closed circulatory system. Shock is a disruption of the circulatory system. Chordates can experience shock. The answer is (G).

[Q] 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
[A]

[Assistant] Here's my solution: Earthworms are important deposit feeders that help form and enrich soil. Earthworms by Casey Earthworms are invertebrates. Invertebrates can be deposit feeders. The answer is (D).


[User]
Use reasoning to answer the following question. What use energy and minerals to make food?
Options:
- (A) trees
- (B) plant life
- (C) humans
- (D) producers
- (E) bears
- (F) elephants
- (G) Most plants
- (H) ferns

[Assistant]
Producers use energy and inorganic molecules to make food. Minerals are inorganic substances. Producers use energy and minerals to make food.
So, the answer is (D).


[User]
What forms when molecules react with one another?
Options:
- (A) Chemical energy
- (B) substrates
- (C) chemical bonds
- (D) living things
- (E) Organic compounds
- (F) Energy.
- (G) new elements
- (H) flow of electrons
--
Let's think first: Chemical bonds form when substances react with one another. All substances are composed of molecules. Chemical bonds form when molecules react with one another.... So the answer is [(C)]
------
Antigens are molecules that prompt the what of antibodies?
Options:
- (A) termination
- (B) failure
- (C) humans
- (D) decrease
- (E) production
- (F) anemia
- (G) rapid expansion
- (H) kinetic
--
Let's think first: Antigens are molecules that the immune system recognizes as foreign to the body. Antigens prompt the body to produce antibodies. Antigens are molecules that prompt the production of antibodies.... So the answer is [(E)]
------
Endocrine hormones move from place to place through the
Options:
- (A) animals
- (B) ovaries
- (C) Man
- (D) humans
- (E) blood
- (F) hair
- (G) skin
- (H) scales
--
Let's think first: Endocrine hormones travel throughout the body in the blood. For the tourists, there are many places to travel. Endocrine hormones move from place to place in the body through the blood.... So the answer is [(E)]
------
What is one thing most single-celled organisms have in common?
Options:
- (A) Energy
- (B) glucose
- (C) bacteria
- (D) motility
- (E) Energy.
- (F) heat energy
- (G) resistance
- (H) warmth
--

[Assistant]
Let's think first: Most protists have motility. Protists Protists are single-celled organisms. Most single-celled organisms are motile.... So the answer is [(D)]
------


[User]
Most invertebrates have brains capable of what?
Options:
- (A) telepathy
- (B) movement
- (C) telekinesis
- (D) allow growth
- (E) animals
- (F) learning
- (G) relocation
- (H) power
--
Let's think first: Most invertebrates have a more complex nervous system. Cephalopods have well developed nervous systems with complex brains capable of learning. Most invertebrates have brains capable of learning.... So the answer is [(F)]
------
What can develop into new haploid individuals without being fertilized?
Options:
- (A) bacteria
- (B) alpacas
- (C) parasites
- (D) Candida
- (E) cows
- (F) insects
- (G) orchids
- (H) ferns
--
Let's think first: Fungi spores can develop into new haploid individuals without being fertilized. Candida and Aspergillus are types of fungi. Spores of Candida and Aspergillus can develop into new haploid individuals without being fertilized.... So the answer is [(D)]
------
Glutamate transport requires what?
Options:
- (A) chemicals
- (B) flavoring
- (C) glucose
- (D) energy
- (E) MSG
- (F) Energy.
- (G) chop sui
- (H) oxygen
--
Let's think first: Vesicle transport requires energy, so it is also a form of active transport. Synaptic vesicles glutamate transporter 5. Glutamate transport requires energy.... So the answer is [(D)]
------
What gets converted into the type of energy that animal cells need?
Options:
- (A) photosynthesis
- (B) solar energy
- (C) sugar
- (D) UV
- (E) food
- (F) water
- (G) Energy
- (H) Light
--

[Assistant]
Let's think first: Glucose is used for energy by the cells of most organisms. Food is converted into glucose. Food is converted into the type of energy that most cells use.... So the answer is [(E)]
------


[User]
Question: Most of what kind of animal have good eyesight and a good sense of smell?
Options:
- (A) have a positive impact on the environment
- (B) members of their own species
- (C) Something that makes plants green
- (D) passenger pigeons
- (E) Something with a head, thorax, and abdomen
- (F) Something that is self-aware
- (G) competing for resources
- (H) animals in the class reptilia
Let's be accurate as possible and think step-by-step.

[Assistant]
Most reptiles have good eyesight and a keen sense of smell. Reptilia contains over 7800 entries on numerous species of reptiles. Most animals in the class reptilia have good eyesight and a keen sense of smell.
The answer: (H).


[User]
Let's think step by step! Splitting into what is the final stage of cell division in eukaryotes as well as prokaryotes?
Options:
- (A) fewer cells
- (B) merged cells
- (C) two cells
- (D) Chlorophyll
- (E) five cells
- (F) autumn
- (G) allow growth
- (H) Leptospirosis
The thinking starts now:

[Assistant] Cytokinesis is the final stage of cell division in eukaryotes as well as prokaryotes. During cytokinesis , the cell body splits into two cells. Splitting into two cells is the final stage of cell division in eukaryotes as well as prokaryotes. The final answer: (C).


[User]
What are vascular plants that produce seeds in the form of cones?
Options:
- (A) Leptospirosis
- (B) more abundant
- (C) Newton
- (D) it needs them
- (E) Conifers
- (F) epidermal
- (G) evergreens
- (H) white
--
Let's think first: Gymnosperms are vascular plants that produce seeds in cones. Gymnosperms are the plants that are known as evergreens. Evergreens are vascular plants that produce seeds in cones.... So the answer is [(G)]
Plants and snakes live _.
Options:
- (A) almost everywhere
- (B) important habitats
- (C) hydrate their cells
- (D) reproduce
- (E) more abundant
- (F) competing for resources
- (G) the environment
- (H) vegetation
--
Let's think first: Plants live just about everywhere on Earth. Snakes live almost everywhere on earth. Plants live just about everywhere snakes do.... So the answer is [(A)]
Most ecosystems need what?
Options:
- (A) invasive species
- (B) water
- (C) insects
- (D) food
- (E) tornadoes
- (F) recycling
- (G) plants
- (H) scientists
--
Let's think first: Most ecosystems get energy from sunlight. Sunlight is turned into energy by plants. Most ecosystems need plants.... So the answer is [(G)]
What has permeable skin?
Options:
- (A) goats
- (B) alligators
- (C) animals
- (D) apples
- (E) frogs
- (F) sharks
- (G) humans
- (H) snakes
--
Let's think first: Amphibians have permeable skin that easily absorbs substances from the environment. All frogs are amphibians. Frogs have permeable skin that easily absorb substances in the environment.... So the answer is [(E)]
What do most people need at least a little of every few days to survive?
Options:
- (A) NACL
- (B) UV
- (C) mL
- (D) oxygen
- (E) corn
- (F) H20
- (G) rest
- (H) Hydrogen
--
Let's think first: Most people can survive only a few days without water. Water is everywhere H20. Most people can only survive a few days without H20.... So the answer is [(F)]
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
--

[Assistant] Let's think first: 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.... So the answer is [(B)]


[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
--
Let's think first: Air pollution harms the respiratory and circulatory systems. Nitrogen oxides cause air pollution. Nitrogen oxides harms the respiratory and circulatory systems.... So the answer is [(D)]
Some producers use what physical feature to use energy and inorganic molecules?
Options:
- (A) leaves
- (B) sunlight
- (C) solar energy
- (D) sun
- (E) resevoir
- (F) chemicals
- (G) mitosis
- (H) trees
--
Let's think first: Producers use energy and inorganic molecules to make food. Leaves make food for the plant. Some producers have leaves to help use energy and inorganic molecules.... So the answer is [(A)]
What kind of bodies do earthworms have?
Options:
- (A) non-segmented
- (B) roots
- (C) slimy
- (D) fertile
- (E) bioaerosols
- (F) vertebrate
- (G) more abundant
- (H) segmented
--
Let's think first: Annelids are worms such as the familiar earthworm. Annelids have bodies that are segmented. Earthworms have segmented bodies.... So the answer is [(H)]
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
--
Let's think first: 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.... So the answer is [(G)]
Which needs fungi need to survive?
Options:
- (A) Energy
- (B) food
- (C) alveoli
- (D) oxygen
- (E) peat
- (F) bushes
- (G) bacteria
- (H) trees
--
Let's think first: Oxygen is essential for cellular respiration for all aerobic organisms. Fungi are aerobic organisms. Oxygen is essential for fungi cellular respiration.... So the answer is [(D)]
What increases the productivity and stability of ecosystems?
Options:
- (A) Fully cooking the oysters
- (B) genetic uniformity
- (C) genetic diversity
- (D) extinction
- (E) agriculture
- (F) disease
- (G) Earth orbiting the Sun
- (H) recycling
--

[Assistant] Let's think first: Biodiversity increases the productivity and stability of ecosystems. Biodiversity is basically genetic diversity. Genetic diversity increases the productivity and stability of ecosystems.... So the answer is [(C)]


[User]
What are chromosomes made of?
Options:
- (A) Deoxyribonucleicacid, protein
- (B) sulfuric acid, fat
- (C) Chemical energy
- (D) protein, hydrobromic acid
- (E) boric acid, protein
- (F) Something that comes in a bundle of fibers
- (G) sub-units of species
- (H) A compound that donates proton OK. Let's think hard:

[Assistant]
Chromosomes are coiled structures made of DNA and proteins. DNA stands for Deoxyribonucleicacid. Chromosomes are coiled structures made of Deoxyribonucleicacid and proteins.
So, the final answer is (A).


[User]
What do most people need at least a little of every few days to survive?
Options:
- (A) NACL
- (B) UV
- (C) mL
- (D) oxygen
- (E) corn
- (F) H20
- (G) rest
- (H) Hydrogen
--
Let's think first: Most people can survive only a few days without water. Water is everywhere H20. Most people can only survive a few days without H20.... So the answer is [(F)]

Frogs have a _-chambered heart.
Options:
- (A) alveoli
- (B) organ
- (C) ovaries
- (D) oxygen
- (E) edible
- (F) three
- (G) nektar
- (H) CO 2
--
Let's think first: Amphibians have a relatively complex circulatory system with a three-chambered heart. All frogs are amphibians. Frogs have a three-chambered heart.... So the answer is [(F)]

Why can amphibians easily absorb toxins?
Options:
- (A) salamanders
- (B) permeable skin
- (C) hydrate their cells
- (D) it needs them
- (E) poisonous frogs
- (F) Pesticides
- (G) cold blooded
- (H) bending light rays
--

[Assistant] Let's think first: Amphibians have permeable skin that easily absorbs substances from the environment. Natural Toxins Toxins are poisonous substances from bacterias, plants or animals. Amphibians have permeable skin that can easily absorb toxins from bacterias, plants or animals.... So the answer is [(B)]


[User]
Use reasoning to answer the following question. What learns to behave through playing?
Options:
- (A) otters
- (B) bacteria
- (C) viruses
- (D) rocks
- (E) lions
- (F) animals
- (G) humans
- (H) Birds

[Assistant]
Playing is just one of many ways that mammals and other animals learn how to behave. Mammals include lions, bears, dogs, horses, cattle and antelopes. Playing is one way that lions learn how to behave.
So, the answer is (E).


[User]
What does goldenrod life cycle include?
Options:
- (A) it keeps an organism warm
- (B) sub-units of species
- (C) produce offspring
- (D) seed dispersal
- (E) The flowers are pollinated
- (F) alternation of generations
- (G) that material's properties
- (H) biological diversity Let's solve this problem gradually.

[Assistant] All plants have a characteristic life cycle that includes alternation of generations. Goldenrod is a plant that generates activity. Goldenrod life cycle includes alternation of generations. So the final answer is (F).


[User]
What can live in salt water?
Options:
- (A) otters
- (B) spider
- (C) amoeba
- (D) clam
- (E) alligator
- (F) ducks
- (G) goldfish
- (H) voles OK. Let's think hard:

[Assistant]
Mollusks live in most terrestrial, freshwater, and marine habitats. Mollusks tend to be shore-dwelling creatures. Clams tend to be shore-dwelling creatures and can live in both sea and freshwater.
So, the final answer is (D).


[User]
Question to you: What provides food and shelter to many ocean organisms?
Options:
- (A) It helps them survive
- (B) Something formed from skeleton
- (C) sedimentary rocks
- (D) important habitats
- (E) Something with a head, thorax, and abdomen
- (F) it protects them
- (G) gastropod shells
- (H) in their habitats.
Let's reason step-by-step:

[Assistant] Coral reefs provide food and shelter to many ocean organisms. Coral reefs are formed from coral skeletons. Something formed from skeletons provide food and shelter to many ocean organisms. Final answer: (B).


[User]
Q: What are cells in plants and animals?
Options:
- (A) production of energy
- (B) absorb light energy
- (C) large building blocks
- (D) sub-units of species
- (E) cellulitis
- (F) microscopic bulding blocks
- (G) disease
- (H) microorganisms
A: So, my chain of thought: Cells are the microscopic building blocks of organisms. Plants and animals are organisms. Cells are the microscopic bulding blocks of plants and animals. The answer is (F).

Q: What is larger than ponds?
Options:
- (A) rivers
- (B) deltas
- (C) H 2 O
- (D) loch
- (E) toads
- (F) drop
- (G) puddle
- (H) bird bath
A: So, my chain of thought: Lakes are generally bigger and deeper than ponds. Scotland s lochs , including the famous Loch Ness, are glacial lakes. Lochs are bigger and deeper than ponds. The answer is (D).

Q: What makes up the basic structure and function of all organisms found on earth?
Options:
- (A) organs
- (B) cells
- (C) plants
- (D) fungi
- (E) bone structure
- (F) trees
- (G) Earth molecules
- (H) Fat
A:

[Assistant] So, my chain of thought: Cells are the basic units of the structure and function of living things. An organism is a living thing. Cells are the basic units of the structure and function of organisms. The answer is (B).


[User]
Question: 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
Let's be accurate as possible and think step-by-step.

[Assistant]
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.
The answer: (B).


[User]
Question to you: What can maintaining body position help you to do?
Options:
- (A) work
- (B) play
- (C) move
- (D) live
- (E) rest
- (F) Lift
- (G) ski
- (H) fly.
Let's reason step-by-step:

[Assistant] Balance is the ability to sense and maintain body position. Balance is important in skiing and balance is important in life. In order to ski, it is necessary to maintain body position. Final answer: (G).


[User]
What is one of the facets of an organism's evolution?
Options:
- (A) resistance
- (B) fitness
- (C) properties
- (D) thirst
- (E) movement
- (F) swimming
- (G) offspring
- (H) recycling
--
Let's think first: Behaviors that improve fitness increase through natural selection. Many organism behaviors have evolved through natural selection. An organism's fitness is a result of evolution.... So the answer is [(B)]
What can fats consist of?
Options:
- (A) Energy
- (B) Weight
- (C) ice
- (D) chlorophyll
- (E) water
- (F) Energy.
- (G) Chemical energy
- (H) fatty acid
--
Let's think first: Lipids may consist of fatty acids alone, or they may contain other molecules as well. Fats are known as lipids. Fats may consist of fatty acids alone, or they may contain other molecules as well.... So the answer is [(H)]
What enables natural selection to occur?
Options:
- (A) environment
- (B) mutations
- (C) competition
- (D) relocation
- (E) Darwin
- (F) evolutionary development
- (G) root growth
- (H) research
--
Let's think first: Mutations are essential for evolution to occur. Natural selection is the mechanism of evolution. Mutations allow for natural selection to occur.... So the answer is [(B)]
What does the fishhook cactus release during the day but not during the night.
Options:
- (A) heat
- (B) Air
- (C) water
- (D) carbon monoxide
- (E) carbon dioxide
- (F) oxygen
- (G) Energy.
- (H) Energy
--
Let's think first: Plants release oxygen during the day but not during the night. Another kind of plant is the fishhook cactus. The fishhook cactus releases oxygen during the day but not during the night.... So the answer is [(F)]
Mutation leads to _.
Options:
- (A) Devolution
- (B) Plants growth
- (C) rapid expansion
- (D) Evolution.
- (E) Degeneration
- (F) Extinction
- (G) massive damage
- (H) anemia
--
Let's think first: Mutation creates new genetic variation in a gene pool. Genetic variation is the raw material for evolution. Mutation leads to evolution.... So the answer is [(D)]
What do animals do in the winter?
Options:
- (A) Release energy
- (B) running and lifting
- (C) it keeps an organism warm
- (D) adapt to warm weather
- (E) adapt to extreme heat
- (F) adapt to coolness
- (G) shed fur
- (H) by making heat
--

[Assistant] Let's think first: Animals adapt to cold temperatures. Temperatures are moderate in summer and COLD in winter. Animals adapt to the coolness in the winter.... So the answer is [(F)]


[User]
What do mutations do to dna?
Options:
- (A) It expands
- (B) Damages them
- (C) negative
- (D) Moisturize it.
- (E) Help it.
- (F) Destroy it.
- (G) It decreases
- (H) Change it. Let's solve this problem gradually.

[Assistant] Mutations may change the structure of a chromosome or just change a single nucleotide. DNA is made up of nucleotides. Mutations change DNA. So the final answer is (H).


[User]
Temperature falls from the equator to
Options:
- (A) South Africa
- (B) Antarctica
- (C) Asia
- (D) our planet
- (E) Summer
- (F) during the day
- (G) South America
- (H) It decreases Let's be accurate as possible.

[Assistant]
Temperature falls from the equator to the poles. First, strong winds circling Antarctica isolate the atmosphere near the pole the winter. Temperature falls from the equator to Antarctica.
The final answer: (B).


[User]
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
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Most modern gymnosperms are trees with woody trunks. Conifers are examples of gymnosperms. Conifers are trees with woody trunks. The answer: (A).


[User]
Cacti are adapted to what?
Options:
- (A) the snow
- (B) dry environments
- (C) Animal survival
- (D) survival
- (E) tropical regions
- (F) moist environments
- (G) relocation
- (H) salt and water.
--
Let's think first: Plants that are adapted to very dry environments are called xerophytes. Succulents, bromeliads and cacti are xerophytes. A plant that is adapt to a very dry environment is a cacti.... So the answer is [(B)]
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
--
Let's think first: Annelids are worms such as the familiar earthworm. Annelids include earthworms and leeches. Leeches are related to worms.... So the answer is [(F)]
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
--
Let's think first: 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.... So the answer is [(A)]
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.
--
Let's think first: Ribosomes are small organelles where proteins are made. Bacteria contain no organelles. Bacteria do not have ribosomes for protein production.... So the answer is [(C)]
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)]
What are genes that are located on the same molecules of dna complexed with proteins called?
Options:
- (A) bioaerosols
- (B) solid, liquid, gas
- (C) interact
- (D) sensory neurons
- (E) organs
- (F) deltas
- (G) more abundant
- (H) linked genes
--

[Assistant] Let's think first: Genes that are located on the same chromosome are called linked genes. Chromosomes are molecules of DNA complexed with proteins. Genes that are located on the same molecules of DNA complexed with proteins. are called linked genes.... So the answer is [(H)]


[User]
Living beings in marine biomes must be adapted to what in the water?
Options:
- (A) CO 2
- (B) stress
- (C) liquid
- (D) salt
- (E) heat
- (F) an ion
- (G) energy
- (H) motion Think carefully first, then make a decision. My thoughts:

[Assistant] Organisms that live in marine biomes must be adapted to the salt in the water. Organisms or living beings are literally things that are alive. Living beings that live in marine biomes must be adapted to the salt in the water. So the answer is (D).


[User]
What can be reduced when a population suddenly gets much smaller?
Options:
- (A) Pollution
- (B) The size of the Earth
- (C) Greenhouse gasses
- (D) The size of bottlenecks
- (E) The size of the environment
- (F) Genetic variation
- (G) Plant growth is reduced
- (H) Quality of life
--
Let's think first: Bottleneck effect occurs when a population suddenly gets much smaller. Genetic variation can be reduced by random genetic drift, population bottlenecks, founder effect. Genetic variation can be reduced when a population suddenly gets much smaller.... So the answer is [(F)]
What is the process of breaking down food into nutrients?
Options:
- (A) recycling
- (B) food processing
- (C) digestion
- (D) bacteria
- (E) eating
- (F) hydration
- (G) Dehydration
- (H) blender
--
Let's think first: Digestion is the process of breaking down food into components the body can absorb. Nutrients are absorbed by the intestines and if the walls are coated, fewer nutrients are absorbed. Digestion is the process of breaking down food into nutrients.... So the answer is [(C)]
How do echinoderms use their feet to locomote themselves?
Options:
- (A) one at a time
- (B) to move people
- (C) running and lifting
- (D) protein channels
- (E) a hydraulic system
- (F) it needs them
- (G) undulations
- (H) It helps them survive
--
Let's think first: Echinoderms have a unique water vascular system with tube feet. Echinoderms have a hydraulic system of locomotion called the water vascular system. Echinoderms have a hydraulic system of locomotion with tube feet.... So the answer is [(E)]
What falls decreasingly on the earth from the equator to the poles?
Options:
- (A) autumn
- (B) heat
- (C) chill
- (D) Vapor
- (E) Energy
- (F) cold
- (G) summer
- (H) Mass
--
Let's think first: Temperature falls from the equator to the poles. Temperature is a measure of the amount of heat. Heat falls from the equator to the poles.... So the answer is [(B)]
Oxygen is essential for cellular respiration for what?
Options:
- (A) Man
- (B) Energy.
- (C) humans
- (D) plants
- (E) animals
- (F) Energy
- (G) health
- (H) fungi
--
Let's think first: Oxygen is essential for cellular respiration for all aerobic organisms. Fungi are aerobic organisms. Oxygen is essential for cellular respiration for fungi.... So the answer is [(H)]
Objects that are a few nanometers in size can be seen only with:
Options:
- (A) an electron microscope
- (B) refraction of light
- (C) matter vibrating
- (D) ultrasound
- (E) The bending of a ray of light
- (F) slight magnification
- (G) flashlights
- (H) lens
--

[Assistant] Let's think first: Viruses are so small that they can be seen only with an electron microscope. Viruses Viruses are very small, a few nanometers in size. Objects that are only a few nanometers in size can be seen only with an electron microscope.... So the answer is [(A)]


[User]
What grows into the soil to absorb water and minerals?
Options:
- (A) NaCl
- (B) vegetation
- (C) burrs
- (D) Trees
- (E) grass
- (F) Carrots
- (G) Conifers
- (H) potatoes
--
Let's think first: Most plants grow roots down into the soil to absorb water and minerals. Beets and carrots are the roots of plants. Most carrots grow down into the soil to absorb water and minerals.... So the answer is [(F)]
------
Something that is primarily electrostatic in origin causes water to expand when it what?
Options:
- (A) heat
- (B) freezes
- (C) a hazard
- (D) boiling
- (E) moves
- (F) reacts
- (G) expelled
- (H) it's state
--
Let's think first: Hydrogen bonds cause water to expand when it freezes. Hydrogen bonds Hydrogen bonds are primarily electrostatic in origin. Something that is primarily electrostatic in origin causes water to expand when it freezes.... So the answer is [(B)]
------
Which item found in the human body is smaller?
Options:
- (A) the eyes
- (B) Epidermis
- (C) all matter
- (D) Fingernail.
- (E) Inches
- (F) Baby tooth.
- (G) Small eyelash.
- (H) Neuron.
--
Let's think first: Cells vary in size as well as shape, but all cells are very small. Neurons are cells that are similar to other cells. Neurons are very small in size.... So the answer is [(H)]
------
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
--

[Assistant]
Let's think first: Viruses are not cells. Influenza viruses mutate. Influenza is not a cell.... So the answer is [(E)]
------


[User]
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)]

A significant evolutionary response might be the result of what?
Options:
- (A) Plant reproduction
- (B) Greenhouse gasses
- (C) climate change
- (D) rapid expansion
- (E) Plants growth
- (F) competition
- (G) Chemical energy
- (H) Electrical energy
--
Let's think first: Evolution occurs in response to a change in the environment. Climate change is likely to have a significant impact on the global environment and human society. Climate change is likely to result in a significant evolutionary response.... So the answer is [(C)]

Crustaceans and insects have what special structures?
Options:
- (A) the eyes
- (B) a cuticle
- (C) internal
- (D) excretory
- (E) invisible
- (F) Chlorophyll
- (G) fur and fat
- (H) muscled
--

[Assistant] Let's think first: Some arthropods have special excretory structures. Crustaceans are, like insects, arthropods. Crustaceans and insects have special excretory structures.... So the answer is [(D)]


[User]
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
Let's think step by step below.

[Assistant]
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.
Thus, the answer is (B).


[User]
Organisms in a marine biome must be be adapted to what in the water?
Options:
- (A) mud
- (B) Nutrients
- (C) sodium
- (D) toxins
- (E) motion
- (F) sugar
- (G) energy
- (H) an anion
Hmmm, let me think. I don't want to be wrong, so I got to be careful.

[Assistant] Organisms that live in marine biomes must be adapted to the salt in the water. Another name for salt is sodium. Organisms that live in marine biomes must be adapted to the sodium in the water. The answer: (C).


[User]
question... _ are an essential nutrient for animals.
Options:
- (A) Energy
- (B) Chemicals
- (C) trees
- (D) potatoes
- (E) Acids
- (F) allow growth
- (G) store
- (H) Proteins
answer... All animals are heterotrophs. Proteins are an essential nutrient for heterotrophs . Proteins are an essential nutrient for animals.
The answer is (H)

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
answer... 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 is (E)

question... How can cells of the tobacco mosaic be seen?
Options:
- (A) refraction of light
- (B) an area swollen with pus
- (C) by indirect light
- (D) death and devastation
- (E) bending light rays
- (F) electron microscope
- (G) deadly and devastating
- (H) Veins and arteries.
answer...

[Assistant]
Viruses are so small that they can be seen only with an electron microscope. Viruses include the Tobacco Mosaic Virus. Tobacco Mosaic is so small that it can only be seen with an electron microscope.
The answer is (F)


[User]
In what way does a catalyst help in chemical reactions?
Options:
- (A) Generating heat
- (B) lowered energy cost
- (C) metabolic reaction
- (D) heating liquids
- (E) by making heat
- (F) adding heat
- (G) increases a body's strength
- (H) preventing heat transfer Let's be accurate as possible.

[Assistant]
All chemical reactions require activation energy to get started. Catalysts lower the activation energy. A catalyst can lower the energy cost of a chemical reaction.
The final answer: (B).


[User]
The liver is formed after cells for into
Options:
- (A) death
- (B) humans
- (C) Energy.
- (D) tissue
- (E) migrate
- (F) grow
- (G) recovery
- (H) expelled
--
Let's think first: Cells are organized into tissues, and tissues form organs. Organs such as the stomach and liver also begin to develop. Cells are formed into tissues and tissues form the liver.... So the answer is [(D)]
Temperature falls from the equator to
Options:
- (A) South Africa
- (B) Antarctica
- (C) Asia
- (D) our planet
- (E) Summer
- (F) during the day
- (G) South America
- (H) It decreases
--
Let's think first: Temperature falls from the equator to the poles. First, strong winds circling Antarctica isolate the atmosphere near the pole the winter. Temperature falls from the equator to Antarctica.... So the answer is [(B)]
What is still provided, whether the style is long or a mullet?
Options:
- (A) braids
- (B) it helps plants in growing
- (C) characteristics
- (D) insulation and protection
- (E) bowl cut
- (F) buzz cut
- (G) Mechanical energy
- (H) food and shelter
--
Let's think first: Hair helps to insulate and protect the body. Frankly, long hair is quite different to a mullet style. Whether worn long or as a mullet, there is still insulation and protection provided.... So the answer is [(D)]
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.
--
Let's think first: 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.... So the answer is [(B)]
What is one thing most single-celled organisms have in common?
Options:
- (A) Energy
- (B) glucose
- (C) bacteria
- (D) motility
- (E) Energy.
- (F) heat energy
- (G) resistance
- (H) warmth
--
Let's think first: Most protists have motility. Protists Protists are single-celled organisms. Most single-celled organisms are motile.... So the answer is [(D)]
What has permeable skin?
Options:
- (A) goats
- (B) alligators
- (C) animals
- (D) apples
- (E) frogs
- (F) sharks
- (G) humans
- (H) snakes
--

[Assistant] Let's think first: Amphibians have permeable skin that easily absorbs substances from the environment. All frogs are amphibians. Frogs have permeable skin that easily absorb substances in the environment.... So the answer is [(E)]


[User]
Use reasoning to answer the following question. What helps cells take up sugar from the blood in the body?
Options:
- (A) exercise
- (B) sugar
- (C) Energy
- (D) Energy.
- (E) bones
- (F) pancreas
- (G) insulin
- (H) blood cells

[Assistant]
Insulin helps cells take up glucose from the blood. For instance, glucose is a sugar. Insulin helps cells take up sugar from the blood.
So, the answer is (G).


[User]
All redwoods have a characteristic life cycle that includes what?
Options:
- (A) seed dispersal
- (B) alternation stations
- (C) biological diversity
- (D) The flowers are pollinated
- (E) sub-units of species
- (F) alternation of generations
- (G) alternation alteration
- (H) alternation of genetics OK. Let's think hard:

[Assistant]
All plants have a characteristic life cycle that includes alternation of generations. All trees are plants, including redwoods. All redwoods have a characteristic life cycle that includes alternation of generations.
So, the final answer is (F).


[User]
[[Ques]]: What are sometimes made from the material that covers woody stems?
Options:
- (A) shrub beds
- (B) solid geometric shapes
- (C) saffron
- (D) Organic compounds
- (E) turmeric
- (F) mustard seed
- (G) cinnamon sticks
- (H) layers of fat
[[Ans]]: [Trees have woody stems covered with bark. Cinnamon sticks are simply pieces of tree bark. Woody stems are sometimes covered by material used to make cinnamon sticks.]
[(G)]

[[Ques]]: Thyroxine increases the rate of metabolism in cells throughout the what?
Options:
- (A) Summer
- (B) body
- (C) state
- (D) skin
- (E) H 2 O
- (F) HIV
- (G) life
- (H) humans
[[Ans]]: [Thyroid hormones increase the rate of metabolism in cells throughout the body. Thyroxine, a thyroid hormone, is an aryl iodide. Thyroxine increases the rate of metabolism in cells throughout the body.]
[(B)]

[[Ques]]: Most types of what have motility?
Options:
- (A) gastropod shells
- (B) members of their own species
- (C) single-celled organisms
- (D) Something to move
- (E) remains of prehistoric life
- (F) microbial fuel cells
- (G) microorganisms
- (H) share properties
[[Ans]]:

[Assistant]
[Most protists have motility. Protists Protists are single-celled organisms. Most single-celled organisms have motility.]
[(C)]


[User]
What happens when muscular walls of arteries and veins contract?
Options:
- (A) connection
- (B) It expands
- (C) Dehydration
- (D) construction
- (E) forces
- (F) massive damage
- (G) constriction
- (H) contraction
--
Let's think first: Constriction occurs when the muscular walls of blood vessels contract. Arteries and veins are blood vessels. Constriction happens when the muscular walls of arteries and veins contract.... So the answer is [(G)]

What process reads and regulates gene expression?
Options:
- (A) organs
- (B) sensory neurons
- (C) A computer
- (D) Plants growth
- (E) translation
- (F) sweating
- (G) heat or cold
- (H) Most plants
--
Let's think first: Translation reads the genetic code in mRNA and makes a protein. Gene expression can be regulated at the level of translation of an mRNA into a protein. Translation reads and regulates gene expression.... So the answer is [(E)]

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
--

[Assistant] 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)]


[User]
This helps with sensing and maintaining body position:
Options:
- (A) lightheaded
- (B) sweating
- (C) inner ear
- (D) cochlea
- (E) four limbs
- (F) nerves
- (G) Riding a bike
- (H) dizzy
--
Let's think first: Balance is the ability to sense and maintain body position. Another part of the inner ear is used for balance. The inner ear helps with sensing and maintaining body position.... So the answer is [(C)]
What has good eyesight?
Options:
- (A) humans
- (B) fur seals
- (C) athletes
- (D) bears
- (E) goats
- (F) geckos
- (G) elephants
- (H) rabbit
--
Let's think first: Most reptiles have good eyesight and a keen sense of smell. Geckos are, in fact, reptiles. Geckos have good eyesight.... So the answer is [(F)]
What can live in salt water?
Options:
- (A) otters
- (B) spider
- (C) amoeba
- (D) clam
- (E) alligator
- (F) ducks
- (G) goldfish
- (H) voles
--
Let's think first: Mollusks live in most terrestrial, freshwater, and marine habitats. Mollusks tend to be shore-dwelling creatures. Clams tend to be shore-dwelling creatures and can live in both sea and freshwater.... So the answer is [(D)]
Cancer is characterized by cells doing what out of control?
Options:
- (A) massive damage
- (B) smoking tobacco
- (C) destroying
- (D) replicating
- (E) Localized damage
- (F) failing
- (G) disappearing
- (H) Smoking
--
Let's think first: Cancer is a disease in which cells divide out of control. Cancer is a family of diseases that is characterized by cells that replicate too rapidly. Cancer is characterized by cells replicating out of control.... So the answer is [(D)]
Arteries in the body are able to carry what?
Options:
- (A) saliva
- (B) breathe
- (C) water
- (D) Air
- (E) oxygen
- (F) blood
- (G) veins
- (H) liquid
--
Let's think first: Veins generally carry deoxygenated blood. Arteries and veins are blood vessels. Arteries carry blood.... So the answer is [(F)]
What ccurs when many muscles contract a little bit all at once?
Options:
- (A) heat production
- (B) heat loss
- (C) sweating
- (D) permineralization
- (E) hypothermia
- (F) resistance
- (G) cramping
- (H) heat energy
--

[Assistant] Let's think first: Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production occurs when many muscles contract a little bit all at once.... So the answer is [(A)]


[User]
What is one attribute of most reptiles?
Options:
- (A) aerobic capacity
- (B) good olfaction
- (C) a cuticle
- (D) warm-blooded
- (E) graptolites
- (F) an organism's body
- (G) permineralization
- (H) stamina
--
Let's think first: Most reptiles have good eyesight and a keen sense of smell. Olfaction is the sense of smell and gustation is the sense of taste. Most reptiles have good olfaction.... So the answer is [(B)]
What do trees release during the day but not at night?
Options:
- (A) Energy
- (B) water
- (C) He
- (D) Ce
- (E) chemicals
- (F) Energy.
- (G) heat
- (H) oxygen
--
Let's think first: Plants release oxygen during the day but not during the night. All plants are trees. Trees release oxygen during the day but not at night.... So the answer is [(H)]
What is bilaterally symmetrical and a protostome?
Options:
- (A) gastropod shells
- (B) honeybees
- (C) humans
- (D) shells
- (E) bears
- (F) the common snail
- (G) peachleaf willow
- (H) the eyes
--
Let's think first: Mollusks are invertebrates such as the common snail. Mollusks are bilateraly symetrical and are protostomes. The common snail is bilaterally symmetrical and a protostome.... So the answer is [(F)]
What do mussels eat?
Options:
- (A) bivalves
- (B) sub-units of species
- (C) Something coming from a gland
- (D) mussels
- (E) plankton and nonliving organic
- (F) Something made from fermented ricce
- (G) mollusks
- (H) Microscopic organisms
--
Let's think first: Bivalves feed on plankton and nonliving organic matter. Mussels are bivalve mollusks. Mussels eat plankton and nonliving organic matter.... So the answer is [(E)]
What forms when molecules react with one another?
Options:
- (A) biochemistry
- (B) Chemical energy
- (C) Energy.
- (D) atoms
- (E) chemical bonds
- (F) elements
- (G) flow of electrons
- (H) Organic compounds
--
Let's think first: Chemical bonds form when substances react with one another. All substances are composed of molecules. Chemical bonds form when molecules react with one another.... So the answer is [(E)]
What makes food from co and h 2?
Options:
- (A) producers
- (B) carbon atoms
- (C) Most plants
- (D) production lines
- (E) light energy
- (F) trees
- (G) air pockets
- (H) Chlorophyll
--

[Assistant] Let's think first: Producers make food from inorganic molecules. Among the small inorganic molecules which are economically attractive are CO and H 2 . Producers make food from CO and H 2.... So the answer is [(A)]


[User]
Question to you: What lack respiratory and excretory systems?
Options:
- (A) They may not survive.
- (B) members of their own species
- (C) platypus
- (D) humans
- (E) crinoids and blastoids
- (F) passenger pigeons
- (G) graptolites
- (H) whales.
Let's reason step-by-step:

[Assistant] Echinoderms lack respiratory and excretory systems. Echinoderms in the diorama include the crinoids and blastoids. Crinoids and blastoids lack respiratory and excretory systems. Final answer: (E).


[User]
Use reasoning to answer the following question. Cartilage is a tough tissue made up of:
Options:
- (A) a cuticle
- (B) bones
- (C) Joules
- (D) neurons
- (E) the skin
- (F) loose soil
- (G) fibrils
- (H) muscle

[Assistant]
Cartilage is a tough tissue that contains a protein called collagen. Many collagen fibrils come together and form a collagen and forma collagen fiber. Cartilage is a tough tissue made up of fibrils.
So, the answer is (G).


[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 Think carefully first, then make a decision. My thoughts:

[Assistant] 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).


[User]
What can hiv infect and destroy part of?
Options:
- (A) water
- (B) parasitic
- (C) epidermis and dermis
- (D) the immune response
- (E) Veins and arteries.
- (F) Most plants
- (G) the body's largest organ
- (H) Trojan worm OK. Let's think hard:

[Assistant]
HIV infects and destroys helper T cells. Helper T Cells Helper T cells are the brains behind immune response. HIV infects and destroys part of the immune response.
So, the final answer is (D).


[User]
What grows into the soil to absorb water and minerals?
Options:
- (A) NaCl
- (B) vegetation
- (C) burrs
- (D) Trees
- (E) grass
- (F) Carrots
- (G) Conifers
- (H) potatoes
--
Let's think first: Most plants grow roots down into the soil to absorb water and minerals. Beets and carrots are the roots of plants. Most carrots grow down into the soil to absorb water and minerals.... So the answer is [(F)]

What don't arthropods have?
Options:
- (A) an exoskeleton
- (B) legs
- (C) Bodily water
- (D) Damaged hearing
- (E) kinetic energy
- (F) a backbone
- (G) Energy
- (H) backs
--
Let's think first: Arthropods are the largest phylum of invertebrates. Invertebrates are animals without a backbone. Arthropods are animals without a backbone.... So the answer is [(F)]

What type of acid contains inherited instructions for proteins?
Options:
- (A) HIV
- (B) p53
- (C) genetic acids
- (D) DNA
- (E) SNPs
- (F) protein acid
- (G) RNA
- (H) two
--

[Assistant] Let's think first: DNA contains genetic instructions for proteins, and RNA helps assemble the proteins. Genetic memory is inherited. DNA contains inherited instructions for proteins.... So the answer is [(D)]


[User]
Question: How are plant cells around the vascular tissue created?
Options:
- (A) meiosis
- (B) metastasis
- (C) haleotosis
- (D) vegetation
- (E) shrub beds
- (F) made
- (G) homogenous
- (H) mitosis
Let's be accurate as possible and think step-by-step.

[Assistant]
Secondary meristem is located within and around the vascular tissues. Plant cell types rise by mitosis from a meristem . Plant cells around the vascular tissues are created by mitosis.
The answer: (H).


[User]
Use reasoning to answer the following question. When many muscles contract a little bit, simultaenous, it produces:
Options:
- (A) forces
- (B) heat
- (C) cold blooded
- (D) sweat
- (E) electrical energy
- (F) Energy
- (G) pain
- (H) thermal displacement

[Assistant]
Shivering occurs when many muscles contract a little bit all at once. Heat production is increased by shivering and non-shivering thermogenesis . Heat production is increased when many muscles contract a little bit, all at once.
So, the answer is (B).


[User]
Question: Ozone depletion results in radiation levels that are highest when?
Options:
- (A) middle of the day
- (B) forest is destroyed
- (C) late evening
- (D) Under 32 degrees
- (E) middle of the night
- (F) Temperature changing
- (G) Plant growth is reduced
- (H) early morning
Let's be accurate as possible and think step-by-step.

[Assistant]
Ozone depletion results in higher levels of UV radiation reaching Earth. Solar UV radiation levels are highest during the middle of the day. Ozone depletion results in radiation levels that are highest during the middle of the day.
The answer: (A).


[User]
question: Arteries in the body are able to carry what?
Options:
- (A) saliva
- (B) breathe
- (C) water
- (D) Air
- (E) oxygen
- (F) blood
- (G) veins
- (H) liquid
answer: Veins generally carry deoxygenated blood. Arteries and veins are blood vessels. Arteries carry blood.
The answer is (F)

question: The group of bipedal dinosaurs that included dromaeosaurs eventually evolved into:
Options:
- (A) insects
- (B) animals
- (C) mammals
- (D) running
- (E) Man
- (F) alpacas
- (G) genus
- (H) birds
answer: Birds evolved from a group of bipedal dinosaurs called theropods. Dromaeosaurs are part of the theropod group of dinosaurs. Birds evolved from a group of bipedal dinosaurs that included Dromaeosaurs.
The answer is (H)

question: What are the form of the genetic material of a cell during mitosis?
Options:
- (A) chromosomes
- (B) graptolites
- (C) fur and fat
- (D) peachleaf willow
- (E) pollen
- (F) Leptospirosis
- (G) animals
- (H) it can be seen
answer: Chromosomes are the form of the genetic material of a cell during cell division. Mitosis is cell division. Chromosomes are the form of the genetic material of a cell during mitosis.
The answer is (A)

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:

[Assistant]
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)


[User]
Let's think step by step! 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
The thinking starts now:

[Assistant] Most fungi get organic compounds from dead organisms. Fungi include yeasts, molds, and fleshy fungi. Molds get organic compound from dead organisms. The final answer: (A).


[User]
Question: _ is how organisms grow and repair themselves.
Options:
- (A) respiration
- (B) hormone secretion
- (C) potatoes
- (D) Mitosis
- (E) complex
- (F) gene regulation
- (G) properties
- (H) recycling
Let's be accurate as possible and think step-by-step.

[Assistant]
Cell division is how organisms grow and repair themselves. Mitosis is cell division. Mitosis is how organisms grow and repair themselves.
The answer: (D).


[User]
Dna is typically found in this state:
Options:
- (A) protected
- (B) spiky
- (C) dense
- (D) genetic
- (E) alleles
- (F) coiled
- (G) circular
- (H) electron
--
Let's think first: DNA is found in chromosomes. Chromosome Chromosome A chromosome is a grouping of coiled strands of DNA , containing many genes. DNA is found in coiled groups of genes.... So the answer is [(F)]
Carbon monoxide, a product of furnaces and engines, is a:
Options:
- (A) acid
- (B) CO2
- (C) kill
- (D) harm
- (E) gas
- (F) form
- (G) CO 2
- (H) HPV
--
Let's think first: Carbon monoxide is a gas produced by furnaces and other devices that burn fuel. Fuel is burned inside the engine. Carbon monoxide is a gas produced by furnaces and other engines.... So the answer is [(E)]
What does lymphoma do to cells?
Options:
- (A) stops cells from dividing
- (B) fertilizes cells
- (C) It helps them survive
- (D) it protects them
- (E) cause people to become sick.
- (F) an area swollen with pus
- (G) causes them to divide often
- (H) infects with a virus
--
Let's think first: Cancer cells divide more often than normal cells, and grow out of control. And leukemia and lymphoma are forms of cancer. Lymphoma causes cells to divide more often than normal cells and to grow out of control.... So the answer is [(G)]
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
--
Let's think first: 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.... So the answer is [(C)]
What is larger than ponds?
Options:
- (A) rivers
- (B) deltas
- (C) H 2 O
- (D) loch
- (E) toads
- (F) drop
- (G) puddle
- (H) bird bath
--
Let's think first: Lakes are generally bigger and deeper than ponds. Scotland s lochs , including the famous Loch Ness, are glacial lakes. Lochs are bigger and deeper than ponds.... So the answer is [(D)]
Why do tigers compete?
Options:
- (A) to get along with others
- (B) pressure differences.
- (C) to give territory to others
- (D) They can distract drivers
- (E) mate with females
- (F) a hemisphere is tilted away from the sun
- (G) to listen to the alpha male
- (H) to gain territory and mates
--

[Assistant] Let's think first: Animals may compete for territory, water, food, or mates. Animals such as lions and tigers fight. Tigers may compete for territory, water, food, or mates.... So the answer is [(H)]


[User]
What group of animals do chordates belong to?
Options:
- (A) graptolites
- (B) more abundant
- (C) warm-blooded
- (D) four limbs
- (E) epidermal
- (F) Vertebrates
- (G) animals
- (H) insects
--
Let's think first: Chordates have a complete digestive system and a closed circulatory system. Vertebrates have a closed circulatory system. Chordates are vertebrates.... So the answer is [(F)]
Autotrophs make food from what?
Options:
- (A) Converting waste.
- (B) members of their own species
- (C) Chemical energy
- (D) photosynthesis
- (E) that material's properties
- (F) inorganic molecules
- (G) Organic compounds
- (H) Chlorophyll
--
Let's think first: Producers make food from inorganic molecules. Autotrophs are referred to as producers. Autotrophs make food from inorganic molecules.... So the answer is [(F)]
What organism can adapt to cold temperatures?
Options:
- (A) insects
- (B) a fish
- (C) sensory neurons
- (D) sweating
- (E) Sasquatches
- (F) peachleaf willow
- (G) athletes
- (H) protect them
--
Let's think first: Animals adapt to cold temperatures. Sasquatches are obviously Earth-type animals. Sasquatches adapt to cold temperatures.... So the answer is [(E)]
What is found in chromosomes?
Options:
- (A) Chemical energy
- (B) It helps them survive
- (C) deoxyribonucleic acid
- (D) toxic acids
- (E) more abundant
- (F) allow growth
- (G) internucleic acid
- (H) chromosomal filters
--
Let's think first: DNA is found in chromosomes. DNA DNA is deoxyribonucleic acid. Deoxyribonucleic acid is found in chromosomes.... So the answer is [(C)]
What harms the respiratory and circulatory systems?
Options:
- (A) oil
- (B) rain
- (C) sulfur
- (D) cars
- (E) tires
- (F) coal
- (G) tar
- (H) bicycles
--
Let's think first: Air pollution harms the respiratory and circulatory systems. Cars are a significant source of air pollution. Cars harm the respiratory and circulatory systems.... So the answer is [(D)]
Eyes can detect images and see light using what?
Options:
- (A) vibrations
- (B) sight
- (C) lenses
- (D) sound
- (E) Energy.
- (F) Energy
- (G) touch
- (H) voltage
--

[Assistant] 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. Eyes can detect images and see light using sight.... So the answer is [(B)]


[User]
question: What is the behavior of attracting something that is phenotypically similar to the seeker called?
Options:
- (A) an object
- (B) stalking
- (C) jealousy
- (D) nonverbal communication
- (E) ducks
- (F) animals
- (G) orchids
- (H) courtship
answer: Courtship is behavior that is intended to attract a mate. Assortative mating is the mating of individuals that are phenotypically similar. Courtship is the behavior of attracting something that is phenotypically similar to the seeker.
The answer is (H)

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
answer: 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 is (C)

question: Conventional myosin is required for the final stage of what?
Options:
- (A) Energy.
- (B) sweating
- (C) cell division
- (D) flow of electrons
- (E) Plants growth
- (F) Dehydration
- (G) movement
- (H) rapid expansion
answer: Cytokinesis is the final stage of cell division in eukaryotes as well as prokaryotes. Conventional myosin is required for cytokinesis . Conventional myosin is required for the final stage of cell division.
The answer is (C)

question: What does the human immunodeficiency virus destroy?
Options:
- (A) B cells
- (B) bacteria
- (C) helper T cells
- (D) animals
- (E) epidermis and dermis
- (F) critical organs
- (G) an organism's body
- (H) cancer cells
answer:

[Assistant]
HIV infects and destroys helper T cells. HIV, the human immunodeficiency virus, is a retrovirus. The human immunodeficiency virus infects and detroys helper T cells.
The answer is (C)


[User]
Hydrogen bonds cause what to expand when it freezes?
Options:
- (A) salt
- (B) mercury
- (C) NaCl
- (D) lake
- (E) H20
- (F) rain
- (G) h2o
- (H) oxygen Think carefully first, then make a decision. My thoughts:

[Assistant] Hydrogen bonds cause water to expand when it freezes. Water is everywhere H20. Hydrogen bonds cause H20 to expand when it freezes. So the answer is (E).


[User]
What do nephrons filter?
Options:
- (A) Blood
- (B) matter
- (C) solutes
- (D) Energy
- (E) SO2
- (F) Gases
- (G) Energy.
- (H) cations Let's be accurate as possible.

[Assistant]
Nephrons are the structural and functional units of the kidneys. Blood is filtered in the kidney. Nephrons filter blood.
The final answer: (A).


[User]
Question to you: Girls have used what to learn behaviors for generations?
Options:
- (A) Birds
- (B) trees
- (C) rainbows
- (D) sound
- (E) alleles
- (F) bows
- (G) nerves
- (H) dolls.
Let's reason step-by-step:

[Assistant] Behaviors can be learned through play. Girls have played with dolls for generations. Girls have used dolls to learn behaviors for generations. Final answer: (H).


[User]
How do dogs conserve body heat?
Options:
- (A) their blood cells
- (B) fur and fat
- (C) their nails
- (D) layers of fat
- (E) Exfoliation
- (F) sweating
- (G) their fur
- (H) their hair
--
Let's think first: Mammals conserve body heat with their hair or fur. Dogs, of course, are mammals. Dogs conserve body heat with their fur.... So the answer is [(G)]
What are sometimes made from the material that covers woody stems?
Options:
- (A) shrub beds
- (B) solid geometric shapes
- (C) saffron
- (D) Organic compounds
- (E) turmeric
- (F) mustard seed
- (G) cinnamon sticks
- (H) layers of fat
--
Let's think first: Trees have woody stems covered with bark. Cinnamon sticks are simply pieces of tree bark. Woody stems are sometimes covered by material used to make cinnamon sticks.... So the answer is [(G)]
What can a producer grow down into the soil in order to absorb minerals and water?
Options:
- (A) Trees
- (B) stems
- (C) roots
- (D) Oak
- (E) seeds
- (F) burrs
- (G) grass
- (H) water absorbing petals
--
Let's think first: Most plants grow roots down into the soil to absorb water and minerals. If the plant is green, it is a producer. Most producers grow roots down into the soil to absorb water and minerals.... So the answer is [(C)]
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)]
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
--
Let's think first: 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.... So the answer is [(A)]
What body part would be attached to the external framework?
Options:
- (A) heart
- (B) insects
- (C) respiratory system
- (D) wings
- (E) humans
- (F) Tail
- (G) fat
- (H) digestive system
--

[Assistant] Let's think first: Wings are part of the exoskeleton and attached to the thorax. An exoskeleton is an external framework. Wings are part of the external framework.... So the answer is [(D)]


[User]
question: Mutation leads to _.
Options:
- (A) Devolution
- (B) Plants growth
- (C) rapid expansion
- (D) Evolution.
- (E) Degeneration
- (F) Extinction
- (G) massive damage
- (H) anemia
answer: Mutation creates new genetic variation in a gene pool. Genetic variation is the raw material for evolution. Mutation leads to evolution.
The answer is (D)

question: 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
answer: 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 answer is (D)

question: What is a producer in terrestrial biomes?
Options:
- (A) food
- (B) Oak
- (C) mammals
- (D) flowers
- (E) earth
- (F) grass
- (G) Trees
- (H) mushrooms
answer: Plants are the major producers in terrestrial biomes. Grasses are very distinctive plants. Grass is a producer in terrestrial biomes.
The answer is (F)

question: Where is the name of a habitat where a variety of ocean organisms often seek food and shelter?
Options:
- (A) gastropod shells
- (B) body water
- (C) seaweed
- (D) more abundant
- (E) whale
- (F) coastlines
- (G) algae
- (H) patch reefs
answer:

[Assistant]
Coral reefs provide food and shelter to many ocean organisms. Coral reefs occur mainly as numerous patch reefs. Patch reef provide food and shelter to many ocean organisms.
The answer is (H)


[User]
A platypus is an example of _.
Options:
- (A) Marsupial.
- (B) Monotremes.
- (C) insects
- (D) animals
- (E) killing insects
- (F) Amphibian.
- (G) Placental mammal.
- (H) matter vibrating OK. Let's think hard:

[Assistant]
Monotremes are mammals that reproduce by laying eggs. Well, platypuses are mammals, and they lay eggs. Platypuses are monotremes.
So, the final answer is (B).


[User]
Q: What is a basis for natural selection?
Options:
- (A) fur and fat
- (B) competition
- (C) mutation
- (D) root growth
- (E) insects
- (F) animals
- (G) trees
- (H) cows
A: So, my chain of thought: Mutation creates new genetic variation in a gene pool. Genetic variation is the basis for natural selection. Mutation is a basis for natural selection. The answer is (C).

Q: What treatment can be used in treating pneumonia?
Options:
- (A) the respiratory system
- (B) a breathing mask
- (C) bronchodilatory treatment
- (D) aqueous solution
- (E) immunotherapy
- (F) radiation therapy
- (G) immune system
- (H) chemotherapy
A: So, my chain of thought: Pneumonia may be caused by an infection or injury of the lungs. Lung injuries are treated with bronchodilatory treatment. Pneumonia can be treated with bronchodilatory treatment. The answer is (C).

Q: Organisms rely on a relatively narrow range of what?
Options:
- (A) Decibels
- (B) water
- (C) food
- (D) relativity
- (E) acidity
- (F) spectrum
- (G) balance
- (H) Light
A:

[Assistant] So, my chain of thought: All life relies on a relatively narrow range of pH, or acidity. All organisms have a life-span. Organisms rely on a relatively narrow range of acidity. The answer is (E).


[User]
Q: Where can amphibians that move like earthworms be found?
Options:
- (A) moist bodies
- (B) body water
- (C) storing water
- (D) during the day
- (E) four limbs
- (F) moist soil
- (G) dry areas
- (H) high altitudes
Let's think step by step below.

[Assistant]
Caecilians can be found in moist soil near rivers and streams in tropical regions. Caecilians are amphibians that move just like earthworms. Amphibians that move like earthworms can be found in moist soil near rivers and streams in tropical regions.
Thus, the answer is (F).


[User]
Question to you: What requires a microscope in order to be seen?
Options:
- (A) fungi
- (B) cells
- (C) mildew
- (D) gasoline
- (E) fungus
- (F) matter
- (G) telescopes
- (H) sunlight.
Let's reason step-by-step:

[Assistant] Cells vary in size as well as shape, but all cells are very small. An embryo is so small that it requires a microscope in order to be seen. A cell requires a microscope in order to be seen. Final answer: (B).


[User]
What relaxes, thereby causing aneurysms?
Options:
- (A) layers of fat
- (B) Veins and arteries.
- (C) sweating
- (D) matter vibrating
- (E) blood vessels
- (F) the skin
- (G) Chemical energy
- (H) sensory neurons
--
Let's think first: Dilation occurs when cell walls relax. An aneurysm is a dilation of a blood vessel. Aneurysms are caused by relaxation of cell walls of blood vessels.... So the answer is [(E)]
What can lead to bullying?
Options:
- (A) Cooperation
- (B) Isolation
- (C) Damaged hearing
- (D) Perfection
- (E) Competition
- (F) negative
- (G) smoking tobacco
- (H) heat or cold
--
Let's think first: Competition may lead to aggressive behaviors or displays of aggression. Aggressive behavior is often first recognized as bullying behavior. Competition can result in bullying.... So the answer is [(E)]
What does soy contain?
Options:
- (A) bioaerosols
- (B) Ribosomes
- (C) glucose
- (D) seeds
- (E) heat energy
- (F) Energy
- (G) hydrocarbons
- (H) layers of fat
--
Let's think first: Ribosomes are sites where proteins are made. Soy protein is a complete protein. Soy contains ribosomes.... So the answer is [(B)]
Fungi are the only organisms that can decompose dead what?
Options:
- (A) fossils
- (B) legumes
- (C) trees
- (D) matter
- (E) amoeba
- (F) coal
- (G) elms
- (H) bamboo
--
Let's think first: Fungi are the only organisms that can decompose wood. Wood comes from trees. Fungi are the only organisms that can decompose dead trees.... So the answer is [(C)]
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 supplement would a human take to aid in breaking down food?
Options:
- (A) sweating
- (B) Energy
- (C) Enzymes.
- (D) Calcium supplements.
- (E) Energy.
- (F) Antacid.
- (G) Protein supplement.
- (H) evaporation
--

[Assistant] Let's think first: Digestion is the process of breaking down food into components the body can absorb. Digestive enzymes are necessary for a complete digestion. Enzymes break down food into components the body can absorb.... So the answer is [(C)]


[User]
Rivers easily dissolve nutrients and:
Options:
- (A) bacteria
- (B) chemicals
- (C) oxygen
- (D) sodium
- (E) vitamin C
- (F) glucose
- (G) a solute
- (H) a hazard OK. Let's think hard:

[Assistant]
Running water is better able to dissolve oxygen and nutrients than standing water. Large, warm rivers hold populations but few occur in cold running water. Oxygen and nutrients dissolve easily in rivers.
So, the final answer is (C).


[User]
Q: What do sea lions learn how to behave from?
Options:
- (A) exercise
- (B) Energy.
- (C) fish
- (D) Movement
- (E) Energy
- (F) playing
- (G) children
- (H) whales
Let's think step by step below.

[Assistant]
Playing is one way mammals and other animals learn how to behave. Sea lions are tactile mammals. Playing is one way sea lions learn how to behave.
Thus, the answer is (F).


[User]
What is caused by a lack of a hormone that helps cells absorb sugar from the blood?
Options:
- (A) glucose
- (B) cancer
- (C) resistance
- (D) diabetes
- (E) fever
- (F) serotonin
- (G) epilepsy
- (H) Dehydration
--
Let's think first: Insulin is a hormone that helps cells absorb sugar from the blood. Diabetes is caused by a lack of insulin. Diabetes is caused by a lack of hormone that helps cells absorb sugar from the blood.... So the answer is [(D)]
What process provides one substance transported by the blood?
Options:
- (A) breathing
- (B) heat produced
- (C) drink
- (D) complex
- (E) osmosis
- (F) sweating
- (G) cell division
- (H) condensation
--
Let's think first: Oxygen is just one substance transported by the blood. Breathing and circulation allow oxygen to be transported to the body's cells. Breathing provides one substance transported by the blood.... So the answer is [(A)]
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)]
Roundworms can be free-living or live on a what?
Options:
- (A) soil
- (B) nest
- (C) host
- (D) root
- (E) stem
- (F) habitat
- (G) food
- (H) commune
--
Let's think first: Roundworms may be free-living or parasitic. Parasites Shortfin makos host a variety of parasitic copepods. Roundworms may be living on a host or free-living.... So the answer is [(C)]
Earthworms can regrow their segments that break off and eat what?
Options:
- (A) fungi
- (B) stem
- (C) soil
- (D) nektar
- (E) meat
- (F) deer
- (G) dirt
- (H) birds
--
Let's think first: Annelids have the amazing capacity to regrow segments that break off. Earthworm Jim the greatest soil munchin' annelid fansite has been re-located. Earthworms are soil eating and can regrow their segments that break off.... So the answer is [(C)]
What is the major thing that biological membranes consist of?
Options:
- (A) chemicals
- (B) glucose
- (C) lipids
- (D) Energy
- (E) complex
- (F) oxygen
- (G) matter
- (H) an ion
--

[Assistant] Let's think first: Lipids may consist of fatty acids alone, or they may contain other molecules as well. All biological membranes contain lipids as the major constituent. All biological membranes have lipids as the main consituent which consist of fatty acids.... So the answer is [(C)]


[User]
Question to you: What do mollusks have?
Options:
- (A) aerobic capacity
- (B) Energy
- (C) gastropod shells
- (D) Chemical energy
- (E) a cuticle
- (F) kinetic energy
- (G) soft bodies
- (H) alveoli.
Let's reason step-by-step:

[Assistant] Mollusks are invertebrates such as the common snail. Mollusks are soft-bodied invertebrates. Mollusks, like the snail, are soft-bodied. Final answer: (G).


[User]
Q: What grow in width and length.?
Options:
- (A) crocodiles
- (B) sedimentary rocks
- (C) vegetation
- (D) remains of prehistoric life
- (E) swamp vegetation
- (F) shrub beds
- (G) underground systems
- (H) loose dirt
A: So, my chain of thought: Roots grow in length and width from primary and secondary meristem. Kids see the underground root systems of trees and then an aerial view of plants in the city. Underground systems grow in width and length. The answer is (G).

Q: When does macroevolution over eras occur?
Options:
- (A) relocation
- (B) colder and wetter
- (C) in a few years
- (D) permineralization
- (E) over eras of time
- (F) within a lifetime
- (G) Continents drifting
- (H) in minutes
A: So, my chain of thought: Macroevolution is evolution over geologic time above the level of the species. Geologists break time down into geologic time units called eras . Macroevolution is evolution over eras above the level of the species. The answer is (E).

Q: Cells are what to a limited number of divides?
Options:
- (A) increased
- (B) standardized
- (C) warm-blooded
- (D) critical organs
- (E) forced
- (F) programmed
- (G) white
- (H) fertile
A:

[Assistant] So, my chain of thought: Cells are programmed to divide only a set number of times. All ViroMed cells are passaged a limited number of times. Cells are programmed to a limited number of divides. The answer is (F).


[User]
Use reasoning to answer the following question. What type of water do sea tigers live in?
Options:
- (A) warm-blooded
- (B) survival
- (C) Frozen
- (D) liquid
- (E) Salt water
- (F) Fresh
- (G) Absorb light
- (H) Evaporated

[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 live in salt water.
So, the answer is (E).


[User]
This helps with sensing and maintaining body position:
Options:
- (A) lightheaded
- (B) sweating
- (C) inner ear
- (D) cochlea
- (E) four limbs
- (F) nerves
- (G) Riding a bike
- (H) dizzy Let's solve this problem gradually.

[Assistant] Balance is the ability to sense and maintain body position. Another part of the inner ear is used for balance. The inner ear helps with sensing and maintaining body position. So the final answer is (C).


[User]
Use reasoning to answer the following question. Pacinian corpuscles are found mainly in the _.
Options:
- (A) tumor
- (B) pupils
- (C) muscle
- (D) hair
- (E) skin
- (F) Man
- (G) retina
- (H) Summer

[Assistant]
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 (E).


[User]
Use reasoning to answer the following question. Animals can compete for territory, water, food, or what?
Options:
- (A) environment
- (B) bosses
- (C) transportation
- (D) vegetation
- (E) plants
- (F) Energy.
- (G) partners
- (H) energy

[Assistant]
Animals may compete for territory, water, food, or mates. Mating Ducks usually look for a mate or partner in winter. Animals may compete for territory, water, food, or partners.
So, the answer is (G).


[User]
What forms when molecules react with one another?
Options:
- (A) Chemical energy
- (B) substrates
- (C) chemical bonds
- (D) living things
- (E) Organic compounds
- (F) Energy.
- (G) new elements
- (H) flow of electrons Let's be accurate as possible.

[Assistant]
Chemical bonds form when substances react with one another. All substances are composed of molecules. Chemical bonds form when molecules react with one another.
The final answer: (C).


[User]
What uses food for energy?
Options:
- (A) Most plants
- (B) no organisms
- (C) agriculture
- (D) the Moon
- (E) animals
- (F) athletes
- (G) most organisms
- (H) the Sun
--
Let's think first: Glucose is used for energy by the cells of most organisms. Food is converted into glucose. Food is used for energy by most organisms.... So the answer is [(G)]

What part of a tree would be woody and covered in bark?
Options:
- (A) shrub beds
- (B) the leaves
- (C) the roots
- (D) cacti
- (E) a sapling
- (F) Chlorophyll
- (G) the trunk
- (H) four limbs
--
Let's think first: Trees have woody stems covered with bark. Stems of plants include trunks and branches. Trees have woody trunks covered with bark.... So the answer is [(G)]

Cells pretty much al share this one characteristic:
Options:
- (A) sensory neurons
- (B) voltage
- (C) aerobic capacity
- (D) microscopic
- (E) eukaryotic
- (F) bacteria
- (G) prokaryotic
- (H) layers of fat
--

[Assistant] Let's think first: Cells vary in size as well as shape, but all cells are very small. All cells are microscopic in size. Cells can vary in shape, but they are all microscopic.... So the answer is [(D)]


[User]
Question to you: What increases the productivity and stability of ecosystems?
Options:
- (A) Fully cooking the oysters
- (B) genetic uniformity
- (C) genetic diversity
- (D) extinction
- (E) agriculture
- (F) disease
- (G) Earth orbiting the Sun
- (H) recycling.
Let's reason step-by-step:

[Assistant] Biodiversity increases the productivity and stability of ecosystems. Biodiversity is basically genetic diversity. Genetic diversity increases the productivity and stability of ecosystems. Final answer: (C).


[User]
To learn more about the average weather, it is essential to:
Options:
- (A) staying warm
- (B) observe it
- (C) argue about it
- (D) ignore it
- (E) survive
- (F) temperature
- (G) A computer
- (H) write about it
--
Let's think first: Climate is the average weather in an area over a long period of time. Along with simulating the climate, it is crucial to observe the climate. It is essential to observe the average weather in one place over time.... So the answer is [(B)]
------
Cells pretty much al share this one characteristic:
Options:
- (A) sensory neurons
- (B) voltage
- (C) aerobic capacity
- (D) microscopic
- (E) eukaryotic
- (F) bacteria
- (G) prokaryotic
- (H) layers of fat
--
Let's think first: Cells vary in size as well as shape, but all cells are very small. All cells are microscopic in size. Cells can vary in shape, but they are all microscopic.... So the answer is [(D)]
------
Antigens are molecules that prompt the what of antibodies?
Options:
- (A) termination
- (B) failure
- (C) humans
- (D) decrease
- (E) production
- (F) anemia
- (G) rapid expansion
- (H) kinetic
--
Let's think first: Antigens are molecules that the immune system recognizes as foreign to the body. Antigens prompt the body to produce antibodies. Antigens are molecules that prompt the production of antibodies.... So the answer is [(E)]
------
Viruses are so small that to see them a scientist would have to use what kind of lens?
Options:
- (A) Refract it
- (B) refraction of light
- (C) an electron lens
- (D) an image
- (E) rays or beams
- (F) bending light rays
- (G) A computer
- (H) flashlights
--

[Assistant]
Let's think first: Viruses are so small that they can be seen only with an electron microscope. On the surface of each microscopic color filter is also a microscopic lens. Viruses are so small that they can be seen only with an electron lens.... So the answer is [(C)]
------


[User]
Let's think step by step! What will die without a supply of blood?
Options:
- (A) plants
- (B) organs
- (C) brain cells
- (D) athletes
- (E) humans
- (F) species
- (G) critical organs
- (H) mushrooms
The thinking starts now:

[Assistant] Brain cells die quickly if their oxygen supply is cut off. Here, the lungs supply the blood with oxygen. Brain cells die quickly if their blood supply is cut off. The final answer: (C).


[User]
Perspiration does what to the skin when it is evaporated from the skin onto the air?
Options:
- (A) reduced heat
- (B) cleans it
- (C) heats it
- (D) temperature
- (E) cools it
- (F) heat or cold
- (G) air cools
- (H) turns it to steam OK. Let's think hard:

[Assistant]
Sweat wets the skin, and when it evaporates, it cools the body. Diaphoresis is a fancy medical term for perspiration or sweating. Perspiration wets the skin and when it evaporates it cools the body.
So, the final answer is (E).


[User]
Question to you: Autotrophs make food from what?
Options:
- (A) Converting waste.
- (B) members of their own species
- (C) Chemical energy
- (D) photosynthesis
- (E) that material's properties
- (F) inorganic molecules
- (G) Organic compounds
- (H) Chlorophyll.
Let's reason step-by-step:

[Assistant] Producers make food from inorganic molecules. Autotrophs are referred to as producers. Autotrophs make food from inorganic molecules. Final answer: (F).


[User]
What does hiv damage?
Options:
- (A) Leptospirosis
- (B) immunities
- (C) Our immune system
- (D) immunizations
- (E) Veins and arteries.
- (F) respiratory system
- (G) Plant reproduction
- (H) the body's largest organ Let's solve this problem gradually.

[Assistant] HIV infects and destroys helper T cells. Helper T cells are the critical link in our immune system. HIV damages our immune system. So the final answer is (C).


[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 be accurate as possible.

[Assistant]
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.
The final answer: (C).


[User]
When cells start to divide uncontrollablly, they may form a what?
Options:
- (A) anemia
- (B) tissue
- (C) fever
- (D) cell
- (E) organ
- (F) fibroid
- (G) acid rain
- (H) illness
--
Let's think first: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells. For example, a fibroid is a tumor, a wart is a tumor, and cancers are tumors. Cells that divide uncontrollably may form a fibroid.... So the answer is [(F)]
What relies on a relatively narrow range of something you can measure with paper strips?
Options:
- (A) Length
- (B) voltage
- (C) all life
- (D) mammals
- (E) humans
- (F) Most plants
- (G) agriculture
- (H) animals
--
Let's think first: All life relies on a relatively narrow range of pH, or acidity. Acidity is measured with a pH meter or with pH paper strips. All life relies on a relatively narrow range of something you can measure with paper strips.... So the answer is [(C)]
What provides protection for soft tissues and internal organs?
Options:
- (A) fur and fat
- (B) eye color
- (C) peachleaf willow
- (D) synapses
- (E) a cuticle
- (F) layers of fat
- (G) nerves
- (H) the skeleton
--
Let's think first: Bone provides protection for soft tissues and internal organs. Bone is the substance that forms the skeleton of the body. The skeleton provides protection for soft tissues and internal organs.... So the answer is [(H)]
What is a basis for natural selection?
Options:
- (A) fur and fat
- (B) competition
- (C) mutation
- (D) root growth
- (E) insects
- (F) animals
- (G) trees
- (H) cows
--
Let's think first: Mutation creates new genetic variation in a gene pool. Genetic variation is the basis for natural selection. Mutation is a basis for natural selection.... So the answer is [(C)]
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)]
Sharks have as skeleton that contains
Options:
- (A) elastin
- (B) Epidermis
- (C) calcium
- (D) fur and fat
- (E) marrow
- (F) strength
- (G) all matter
- (H) collagen
--

[Assistant] Let's think first: Cartilage is a tough tissue that contains a protein called collagen. Sharks have a cartilage skeleton. Sharks have as skeleton that contains a protein called collagen.... So the answer is [(H)]


[User]
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 Let's solve this problem gradually.

[Assistant] 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. So the final answer is (D).


[User]
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 Think carefully first, then make a decision. My thoughts:

[Assistant] 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).


[User]
Let's think step by step! Meiosis is the type of _ that produces ova and spermatozoa.
Options:
- (A) permineralization
- (B) an organism's body
- (C) animals
- (D) Plant reproduction
- (E) Most plants
- (F) Chemical energy
- (G) rapid expansion
- (H) cell division
The thinking starts now:

[Assistant] Meiosis is the type of cell division that produces gametes. Examples of gametes are ova and spermatozoa. Meiosis is the type of cell division that produces ova and spermatozoa. The final answer: (H).


[User] Give the step-by-step reasoning process and then the final answer. Ali has a small flower shop. He sold 4 flowers on Monday, 8 flowers on Tuesday and on Friday, he sold double the number of flowers he sold on Monday. How many flowers does Ali sell?

[Assistant]
Combining Tuesday and Monday, Ali sold 4 + 8 = 12 flowers. On Friday, he sold 2 * 4 = 8 flowers. Altogether, Ali sold 12 + 8 = 20 flowers.
The final answer: 20.


[User]
Question: Fiona and Casey share the hoodies they own. Between the two of them, they own eight hoodies. Casey owns two more than Fiona. How many hoodies does Fiona own?
Answer: Let H be the number of hoodies Fiona owns. Casey owns H + 2 hoodies. Together, they own H + H + 2 = 2H + 2 = 8 hoodies. Thus, 2H = 8 - 2 = 6 hoodies. Therefore, Fiona owns H = 6 / 2 = 3 hoodies. The answer is 3.
[Question]Rohan owns a 20-square meter coconut farm. Each square meter has 2 coconut trees and each tree has 6 coconuts. If the coconuts can be harvested every 3 months and each coconut costs $0.50, how much will he earn after 6 months?
[Answer]Rohan has a total of 20 x 2 = 40 coconut trees. And he has a total of 40 x 6 = 240 coconuts. So, the total coconut he will have after 6 months is 240 x 2 = 480. Therefore, the total amount he will earn is 480 x $0.50 = $240. The answer is 240.
Q: In my school, the number of students has increased by 20% this year. The number of students this year is 960. How many students were there last year?
A: Let X be the number of students last year. The number of students this year is X + X * 20% = 960. Combining like terms, we get X * 1.2 = 960. Dividing both sides by 1.2, we get X = 800 students. The answer is 800.
Question: Carson needs to mow the lawn and plant some flowers. Carson has to mow 40 lines to cover the whole yard, and it takes him 2 minutes to mow one line. He also needs to plant 8 rows of flowers, each with 7 flowers, and it takes him half a minute to plant each flower. How many minutes will Carson spend gardening?
Answer: First find the total time Carson spends mowing: 40 lines * 2 minutes / line = 80 minutes. Then find the total number of flowers Carson plants: 8 rows * 7 flowers / row = 56 flowers. Then multiply that number by the time taken to plant each flower to find the total time spent planting flowers: .5 minutes / flower * 56 flowers = 28 minutes. Finally, add that time to the time spent mowing to find the total time spent gardening: 28 minutes + 80 minutes = 108 minutes. The answer is 108.
[Question]At the supermarket, the price paid for oranges is proportional to the mass purchased. Annie paid $6 for 2 kg of oranges. How much will Annie pay for 12 kg of oranges?
[Answer]The price of 1 kg of oranges is $6 / 2 kg = $3 / kg. So Ali will pay 12 kg * $3 / kg = $36 for 12 kg of oranges. The answer is 36.
[Question]Rob has 24 baseball cards, and a few are doubles. One third of Rob's cards are doubles, and Jess has 5 times as many doubles as Rob. How many doubles baseball cards does Jess have?
[Answer]

[Assistant] Rob has 24 / 3 = 8 doubles baseball cards. Jess has 8 * 5 = 40 doubles baseball cards. The answer is 40.


[User] Each year a store decreased the price of a certain model of TV by $35. If the price in 2001 was $1950, what was the price in 2009? Let's be accurate as possible.

[Assistant]
The period the store had the TV was 2009 - 2001 = 8 years. The TV decreased by $35 / year * 8 years = $280. So the price in 2009 was $1950 - $280 = $1670.
The answer: 1670.


[User] My question is: Three years ago, Bethany was twice the age of her younger sister. In 5 years, her younger sister will be 16. How old is Bethany now? Your thoughts:

[Assistant] First find how old Bethany's sister currently is: 16 years - 5 years = 11 years. Then find how old her sister was 3 years ago: 11 years - 3 years = 8 years. Then double that age to find how old Bethany was three years ago: 8 years * 2 = 16 years. Then add 3 years to that number to find how old Bethany is now: 16 years + 3 years = 19 years. The final answer: 19.


[User]
Answer the following question.
Tapanga and Corey have 66 candies together. However, Tapanga has 8 more candies than Corey. How many candies does Corey have?
Step-by-step reasoning process: Let x = the total number of candies Corey has. x + 8 = the total number of candies Tapanga has. The equation for the total number of candies is x + (x + 8) = 66. Combining like terms, we get 2x + 8 = 66. Subtracting 8 from both sides, we get 2x = 58. Dividing both sides by 2, we get x = 29, so Corey has 29 candies.
The answer is 29.

Answer the following question.
Marie, the confectioner, makes 12 chocolate eggs, each weighing 10 ounces. She then packs an equal number of the eggs in 4 different gift boxes. Unfortunately, she leaves one of the boxes by the kitchen window and the afternoon sun melts everything. She tosses that box out. What is the total weight, in ounces, of the remaining chocolate eggs?
Step-by-step reasoning process: Each gift box has 12 / 4 = 3 chocolate are 12 - 3 = 9 chocolate eggs left. The remaining chocolate eggs therefore weigh 9 * 10 = 90 ounces.
The answer is 90.

Answer the following question.
James has 20 pairs of red socks and half as many black socks. He has twice as many white socks as red and black combined. How many total socks does he have combined?
Step-by-step reasoning process: He has 20 / 2 = 10 black socks. So he has 20 + 10 = 30 black and red socks. So he has 30 * 2 = 60 white socks. So he has 60 + 30 = 90 total socks.
The answer is 90.

Answer the following question.
The number of coronavirus cases in a certain country was 300 infections per day during the first wave. However, the number of cases increased by four times more per day as a new coronavirus variant started infecting people in a second wave. What was the total number of infections during the second wave in 2 weeks?

[Assistant]
Step-by-step reasoning process: When the number of cases increased by four times more per day during the second wave, there were 4 * 300 = 1200 more infections per day than during the first wave. The total number of infections during the second wave per day was 1200 + 300 = 1500. For two weeks with 14 days, the number of me infections was 14 * 1500 = 21000.
The answer is 21000.


[User] The Science museum sells dinosaur models for $100 each. A certain school bought 2 models for the kindergarten library and also bought twice as many for the elementary library. Since the school bought more than 5 models, there was a 5% reduction in price for each model. How much did the school pay in all? Give me reasons, before answering the question

[Assistant] The school bought 2 x 2 = 4 dinosaur models for the elementary library. So the school bought a total of 2 + 4 = 6 models. The price of each model was reduced by $100 x 5 / 100 = $5. Thus, each model cost $100 - $5 = $95. Therefore, the school paid a total of $95 x 6 = $570. So the final answer is 570.


[User] My question is: A train leaves its departure station with 6 coal cars, 12 iron cars, and 2 wood cars. Between each station, there are 6 miles, and it takes 25 minutes to travel between them. At each station, the train can deposit up to 2 coal cars, 3 iron cars, and 1 wood car. How many minutes will it take to deliver all the cars? Your thoughts:

[Assistant] To deliver all the coal, you need to pass by 6 coal / 2 coal / station = 3 stations. To deliver all the iron, you need to pass by 12 iron / 3 iron / station = 4 stations. To deliver all the wood, you need to pass by 2 wood / 1 wood / station = 2 stations. So 4 stations are needed to deliver everything, so 4 stations * 25 minutes / station = 100 minutes are needed. The final answer: 100.