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What are the building blocks of life?
A. cells
B. seeds
C. bricks
D. muscles
Answer: | A |
The amount of energy needed to raise the temperature of one gram of liquid water by 1°c is also known as?
A. specific heat
B. mass
C. Kelvin
D. calorie
Answer: | A |
What helps amplify the effects of extracellular signals?
A. mutation cascades
B. electrical cascades
C. enzymatic cascades
D. spontaneous cascades
Answer: | C |
What units are typically used to measure heats of reaction?
A. kilobytes
B. volts
C. degrees Celsius
D. kilojoules
Answer: | D |
What are solutions that maintain a relatively constant ph when an acid or a base is added?
A. gases
B. water
C. buffer
D. liquids
Answer: | C |
Along with dna, what is the other main type of nucleic acid?
A. nucleotides
B. cytoplasm
C. protein
D. rna
Answer: | D |
Glutathione is a low-molecular-weight compound found in living cells that is produced naturally by what?
A. amino acids
B. liver
C. brain
D. blood
Answer: | B |
What work together in pairs to bend or straighten a joint?
A. cartilage tissues
B. nerve fibers
C. collagen bands
D. muscles
Answer: | D |
What are the outer-shell electrons of an atom called?
A. organism electrons
B. helium electrons
C. valence electrons
D. outer electrons
Answer: | C |
What kind of reproduction is vegetative reproduction?
A. sexual
B. meiosis
C. mitosis
D. asexual
Answer: | D |
What type of tissue runs the length of a stem in vascular bundles?
A. cardiac tissue
B. muscle tissue
C. vascular tissue
D. thermal tissue
Answer: | C |
Birds have a relatively large heart and a rapid what?
A. heart rate
B. digestive process
C. blink rate
D. lifespan
Answer: | A |
When a warm air mass becomes trapped between two cold air masses, what type of front occurs?
A. obscured front
B. storm front
C. stationary front
D. occluded front
Answer: | D |
What is water falling from the sky called?
A. erosion
B. precipitation
C. distillation
D. vaporization
Answer: | B |
What forms when atoms share or transfer valence electrons?
A. fusion
B. bonds
C. levels
D. replicas
Answer: | B |
Which part of the axon has a higher membrane potential?
A. muscular hillock
B. axon hillock
C. canals hillock
D. biofilm hillock
Answer: | B |
A diploid zygote is formed when one sperm does what?
A. incapacitates the egg
B. cracks the egg
C. fertilizes the egg
D. repels the egg
Answer: | C |
As ph increases what happens to a solution?
A. stays the same
B. becomes more basic
C. becomes less basic
D. depends on the solution
Answer: | B |
What is the term for changes in speed or direction, changes that make a roller coaster ride so exciting?
A. transmission
B. inclination
C. oscillation
D. acceleration
Answer: | D |
What do aquatic mollusk species use for respiration?
A. gills
B. lungs
C. pores
D. phototropism
Answer: | A |
Because the solute is moving down the concentration gradient, and no input of energy is required, facilitated diffusion is considered what type of transport?
A. adaptive
B. passive
C. neutral
D. active
Answer: | B |
What does fiber help keep at normal levels in the body?
A. bloodpressure
B. hydration
C. sugar and lipids
D. salt and cholesterol
Answer: | C |
What is it called when plant roots absorb liquid water and release water vapor into the atmosphere?
A. evaporation
B. perspiration
C. sedimentation
D. transpiration
Answer: | D |
Fossil fuels and nuclear power are what type of resource?
A. renewable
B. nonrenewable
C. reusable
D. recurring
Answer: | B |
The stoichiometric coefficients indicate the relative amounts of what?
A. exigencies and products
B. trajectories and products
C. reactions and products
D. reactants and products
Answer: | D |
Blood enters the heart in what valve?
A. mitral
B. aortic
C. tricuspid
D. atria
Answer: | D |
What works through chemical reactions that change the rock?
A. chemical breakdown
B. chemical weathering
C. rock weathering
D. gradual weathering
Answer: | B |
What is necessary for new alleles to be created?
A. new frequencies
B. cross-pollination
C. new rna
D. new mutations
Answer: | D |
What does the placenta sustain during pregnancy?
A. the endocrine system
B. the heart
C. the mother
D. the fetus
Answer: | D |
Other than nitrogen, which nutrient most often limits marine production?
A. zinc
B. potassium
C. calcium
D. phosphorus
Answer: | D |
What astronomical phenomenon is often comprised of remnants of the earliest material that formed in the solar system?
A. meteorites
B. particles
C. comets
D. asteroids
Answer: | A |
Minerals are grouped based on what?
A. density
B. chemical composition
C. mineral composition
D. carbon composition
Answer: | B |
What is the term for the average number of individuals in a population for a given area?
A. result density
B. population density
C. population structure
D. Area Density
Answer: | B |
What is the shape of the thyroid gland?
A. snake - shaped
B. square-shaped
C. triangle-shaped
D. butterfly-shaped
Answer: | D |
Instead of using their nose, reptiles can use what organ to smell scents?
A. tongue
B. eye
C. bladder
D. liver
Answer: | A |
How does the diaphragm look like when it is at rest?
A. flat
B. inverted
C. dome-shaped
D. dam - shaped
Answer: | C |
What is the smallest unit of matter that still maintains it's properties of being an element?
A. a proton
B. an atom
C. an electron
D. a cell
Answer: | B |
Evolution occurs by what process whereby better-adapted members pass along their traits, according to darwin?
A. natural change
B. spontaneous variation
C. natural selection
D. organic selection
Answer: | C |
In flowering plants, male gametophytes are in grains of what?
A. nitrogen
B. viruses
C. bacteria
D. pollen
Answer: | D |
How many different ways can molecules pass through a phospholipid membrane?
A. three
B. six
C. four
D. five
Answer: | A |
Snow and rain are forms of what weather?
A. sediment
B. cold fronts
C. precipitation
D. evaporation
Answer: | C |
There is a positive correlation between the ability to conduct thermal energy and what other energy, as exemplified by metals?
A. elastic
B. gravitational
C. nuclear
D. electricity
Answer: | D |
Most ocean waves are caused by what?
A. animals
B. radiation
C. wind
D. gravity
Answer: | C |
What kind of climates are found at or near the equator?
A. dry grasslands
B. arctic climates
C. tropical climates
D. tundra
Answer: | C |
The uranium series is a chain constituting one what, which encompass naturally occurring isotopes of the heaviest elements?
A. fuel decay family
B. radioactive decay family
C. gland decay family
D. nuclear decay family
Answer: | B |
Producing light without a high temperature is called?
A. luminescence
B. plasma
C. effervescence
D. fluorescence
Answer: | A |
Mutualism is a symbiotic relationship that has what effect on both species involved?
A. destructive
B. harmful
C. disadvantageous
D. beneficial
Answer: | D |
What do you call chemical reactions that take place inside living things?
A. autonomous reactions
B. biochemical reactions
C. physical reactions
D. contaminated reactions
Answer: | B |
What types of blood cells are required for aerobic respiration?
A. white blood cells
B. large blood cells
C. red blood cells
D. grey blood cells
Answer: | C |
The phase transition of a substance changing from a liquid state to a gaseous state is an example of what?
A. trichina
B. spirogyra
C. entropoy
D. catostrophy
Answer: | C |
What is the fracture called when rocks on both sides move?
A. a fault
B. a crevice
C. a stress fracture
D. a shear
Answer: | A |
In heart muscle, what released by neurons activates a signal transduction pathway?
A. glucose
B. acetylcholine
C. glutamate
D. dopamine
Answer: | B |
What do some plants produce that protects dormant seeds and aids in their dispersal?
A. roots
B. leaves
C. stems
D. fruit
Answer: | D |
In a generator, work done to turn the coil is converted to what type of energy?
A. power
B. electric
C. solar
D. voltage
Answer: | B |
What do you call a pattern of stars in the night sky?
A. planets
B. constellation
C. cluster
D. Solar Systems
Answer: | B |
An antigen is a macromolecule that reacts with components of what?
A. immune system
B. digestion system
C. pulmonary system
D. circulatory system
Answer: | A |
The measure of a substances entropy at 25 degrees celsius is known as it's?
A. limited entropy
B. specific entropy
C. standard entropy
D. new entropy
Answer: | C |
Gastric emptying is regulated by both the stomach and what other digestive structure?
A. small intestine
B. esophagus
C. duodenum
D. appendix
Answer: | C |
What is the type of cell division where the number of chromosomes is reduced in half?
A. interphase
B. cloning
C. meiosis
D. mitosis
Answer: | C |
What is the most common cause of lung cancer?
A. tobacco smoke exposure
B. coal smoke exposure
C. tree smoke exposure
D. restaurant smoke exposure
Answer: | A |
Some consumers such as the mushroom get their energy from what?
A. inorganic matter
B. dead organic matter
C. minerals
D. solar energy
Answer: | B |
What does the second number in a blood pressure reading measure?
A. diastolic pressure
B. optimal pressure
C. epithelial pressure
D. external pressure
Answer: | A |
The rock of the mantle is mostly what?
A. silicon
B. metamorphic
C. crystalline
D. peridotite
Answer: | D |
Ocean ridges formed by marine invertebrates living in warm shallow waters within the photic zone of the ocean are called what?
A. trenches
B. coral reefs
C. break water
D. lagoon
Answer: | B |
What compound is formed when there are sparking electrical equipment?
A. smog
B. ozone
C. water
D. carbon
Answer: | B |
What is the number of protons in the nucleus?
A. atomic number
B. metallic number
C. element
D. atomic mass
Answer: | A |
What organism is at the top of the energy pyramid?
A. carnivore
B. insects
C. herbivore
D. primate
Answer: | A |
What structure of the heart receives oxygen-poor blood from the body, then pumps the blood into the right ventricle?
A. left atrium
B. left ventricle
C. right atrium
D. right ventricle
Answer: | C |
Which organelle is often compared to a post office, moving proteins and lipids to where they need to go?
A. the cytoplasm
B. the golgi apparatus
C. the cell wall
D. the nucleus
Answer: | B |
What takes both the shape and the volume of their container?
A. solids
B. fluids
C. gases
D. tissues
Answer: | C |
What is the lowest level of organization that can perform all activities required for life?
A. nucleii
B. tissues
C. the cell
D. organs
Answer: | C |
Where are most of the organs contained in insects?
A. head
B. the abdomen
C. thorax
D. appendages
Answer: | B |
The appendicular skeleton is made up of all bones of the upper and lower what?
A. limbs
B. digestive tract
C. organs
D. hemispheres
Answer: | A |
What can be thought of as the capacity a device has for storing charge?
A. potential
B. velocity
C. resonance
D. capacitance
Answer: | D |
What do electromagnetic receptors detect?
A. dangerous radiation
B. subtle radiation
C. electromagnetic radiation
D. background radiation
Answer: | C |
Nutrients from food are absorbed by the blood for transport around the body as part of what system?
A. growth
B. digestive
C. respiratory
D. circulatory
Answer: | B |
What occurs when plants release water vapor through stomata (leaf pores)?
A. evaporation
B. crystallization
C. inhalation
D. transpiration
Answer: | D |
The stomach mucosa’s epithelial lining consists only of surface mucus cells, which secrete a protective coat of what?
A. bile mucus
B. phosphate mucus
C. acidic mucus
D. alkaline mucus
Answer: | D |
A substance too big to be pumped across the cell membrane may enter or leave the cell by what method?
A. absorption
B. vesicle transport
C. passive transpiration
D. vesicle infusion
Answer: | B |
What is the process in which unstable nuclei become stable by emitting particles and energy and changing to different elements called?
A. radioactive decay
B. nuclear decay
C. initial decay
D. radioactive decrease
Answer: | A |
Most taste buds on the tongue are associated with nipple-shaped projections called what?
A. cilia
B. antennae
C. papillae
D. mucosa
Answer: | C |
What is the lowest energy state of the atom called?
A. active state
B. ground state
C. work state
D. base state
Answer: | B |
What kind of diseases involve the immune system accidentally attacking healthy body cells?
A. inflammation
B. metabolic
C. autoimmune
D. contagious diseases
Answer: | C |
Bacteria may divide several what an hour?
A. cells
B. times
C. hosts
D. days
Answer: | B |
The partial pressure of each gas in a mixture is proportional to its what?
A. mole fraction
B. chemical fraction
C. lactic fraction
D. mesh fraction
Answer: | A |
The combination decomposition or rearrangement of elements and compounds to form new substances is known as?
A. ionic changes
B. chemical changes
C. mineral changes
D. carbon changes
Answer: | B |
When is melatonin secreted?
A. all day
B. in the morning
C. in the afternoon
D. at night
Answer: | D |
In which phase do the chromosomes duplicate?
A. interphase
B. prophase
C. metaphase
D. mitosis
Answer: | A |
Which muscle is a band-like muscle that extends from the anterior superior iliac spine to the medial side?
A. sartorius
B. tibialis anterior
C. soleus
D. vastus medialis
Answer: | A |
Filter feeders, such as sponges, pump water into their body through what structures?
A. valves
B. fibers
C. lungs
D. pores
Answer: | D |
What are ionic solutes?
A. carbohydrates
B. electrolytes
C. salts
D. solvent
Answer: | B |
As with other organic compounds that form hydrogen bonds, water solubility of amines is reflected in the length of what?
A. nuclei chains
B. hydrocarbon bonds
C. complex carbohydrates
D. carbon chains
Answer: | D |
What is the tubular passageway through which the embryo or fetus leaves the mother’s body during birth?
A. penis
B. cervix
C. uterus
D. vagina
Answer: | D |
What has the average global temperature done since the 1900s?
A. changed randomly
B. stayed constant
C. risen
D. decreased
Answer: | C |
An solid object with an irregular shape can be measured via what method?
A. variation
B. vibration
C. radiation
D. displacement
Answer: | D |
Deterioration of limestone occurs more rapidly as the concentration of what increases?
A. ocean pollutants
B. water pollutants
C. ground pollutants
D. air pollutants
Answer: | D |
In which order does the reactivity of halogen group decline?
A. right to left
B. left to right
C. top to bottom
D. bottom to top
Answer: | C |
Photosynthesis converts carbon dioxide and water into what?
A. glutamate
B. carbon
C. insulin
D. glucose
Answer: | D |
Which genetic disorder results in the inability of melanocytes to produce melanin?
A. albinism
B. hyperthyroidism
C. anemia
D. cancers
Answer: | A |
Most diseases caused by bacteria can be cured by which medicines?
A. hydroxides
B. antioxidants
C. inhibitors
D. antibiotics
Answer: | D |
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