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what co-evolved with plants?
[ "gravity", "peachleaf willow", "Chemical energy", "Organic compounds", "hummingbirds", "h2o", "density", "animals" ]
hummingbirds
Answer the following multiple-choice question. Question: what co-evolved with plants? Options: A. gravity B. peachleaf willow C. Chemical energy D. Organic compounds E. hummingbirds F. h2o G. density H. animals Which option is correct and why?
The correct answer is: hummingbirds.
E
What can destroy tissue?
[ "Greenhouse gasses", "rays or beams", "deoxyribonucleic acid", "Chemical energy", "chemical reaction", "Absorbing sunlight", "Electrical energy", "parasites" ]
Absorbing sunlight
Answer the following multiple-choice question. Question: What can destroy tissue? Options: A. Greenhouse gasses B. rays or beams C. deoxyribonucleic acid D. Chemical energy E. chemical reaction F. Absorbing sunlight G. Electrical energy H. parasites Which option is correct and why?
The correct answer is: Absorbing sunlight.
A
What is the clear, curved structure that works with the cornea to help focus light at the back of the eye?
[ "pupil", "retina", "iris", "lens" ]
lens
Answer the following multiple-choice question. Question: What is the clear, curved structure that works with the cornea to help focus light at the back of the eye? Options: A. pupil B. retina C. iris D. lens Which option is correct and why?
The correct answer is: lens.
D
What is the study of the interaction between matter and energy called?
[ "geology", "climatology", "chemistry", "astronomy" ]
chemistry
Answer the following multiple-choice question. Question: What is the study of the interaction between matter and energy called? Options: A. geology B. climatology C. chemistry D. astronomy Which option is correct and why?
The correct answer is: chemistry.
C
What will change the amount of daylight?
[ "The amount of hours in a day", "Changing the angle of the sun", "refraction of light", "Changing the temperature", "the ground shaking", "exposure to cold", "Closing the blinds", "a hemisphere is tilted away from the sun" ]
Changing the angle of the sun
Answer the following multiple-choice question. Question: What will change the amount of daylight? Options: A. The amount of hours in a day B. Changing the angle of the sun C. refraction of light D. Changing the temperature E. the ground shaking F. exposure to cold G. Closing the blinds H. a hemisphere is tilted away from the sun Which option is correct and why?
The correct answer is: Changing the angle of the sun.
B
What can be learned from heating a liquid?
[ "The bending of a ray of light", "When it becomes a gas", "chemical equations", "When it becomes a solid", "kinetic energy", "When its mass increases", "When it condenses", "matter vibrating" ]
When it becomes a gas
Answer the following multiple-choice question. Question: What can be learned from heating a liquid? Options: A. The bending of a ray of light B. When it becomes a gas C. chemical equations D. When it becomes a solid E. kinetic energy F. When its mass increases G. When it condenses H. matter vibrating Which option is correct and why?
The correct answer is: When it becomes a gas.
B
Why do viruses not belong to any domain of life?
[ "they are nonliving", "they are mortal", "they are too mature", "they are immortal" ]
they are nonliving
Answer the following multiple-choice question. Question: Why do viruses not belong to any domain of life? Options: A. they are nonliving B. they are mortal C. they are too mature D. they are immortal Which option is correct and why?
The correct answer is: they are nonliving.
A
Earth's tilt on its rotating axis causes what?
[ "global warming", "dry conditions", "temperature", "wet and cold weather", "absence of stars", "disappearance of the moon", "lack of weather", "converting electricity to heat" ]
wet and cold weather
Answer the following multiple-choice question. Question: Earth's tilt on its rotating axis causes what? Options: A. global warming B. dry conditions C. temperature D. wet and cold weather E. absence of stars F. disappearance of the moon G. lack of weather H. converting electricity to heat Which option is correct and why?
The correct answer is: wet and cold weather.
D
Aside from plants, lizards also eat bugs for
[ "singing", "crying", "nothing", "sustenance" ]
sustenance
Answer the following multiple-choice question. Question: Aside from plants, lizards also eat bugs for Options: A. singing B. crying C. nothing D. sustenance Which option is correct and why?
The correct answer is: sustenance.
D
What is produced by the fermentation in corn and other plants?
[ "carbon dioxide", "white vinegar", "gasoline", "grain alcohol", "glucose", "vinegar", "Organic compounds", "chlorofluorocarbons" ]
grain alcohol
Answer the following multiple-choice question. Question: What is produced by the fermentation in corn and other plants? Options: A. carbon dioxide B. white vinegar C. gasoline D. grain alcohol E. glucose F. vinegar G. Organic compounds H. chlorofluorocarbons Which option is correct and why?
The correct answer is: grain alcohol.
D
What can produce eggs inside ovaries of flowers?
[ "peachleaf willow", "Most plants", "animals", "female ferns", "pollen", "insects", "honeybees", "Plant reproduction" ]
female ferns
Answer the following multiple-choice question. Question: What can produce eggs inside ovaries of flowers? Options: A. peachleaf willow B. Most plants C. animals D. female ferns E. pollen F. insects G. honeybees H. Plant reproduction Which option is correct and why?
The correct answer is: female ferns.
D
What displays less aggression when there are fewer older members?
[ "bacteria", "rocks", "bucks", "bamboo", "toads", "cats", "dogs", "the Sun" ]
bucks
Answer the following multiple-choice question. Question: What displays less aggression when there are fewer older members? Options: A. bacteria B. rocks C. bucks D. bamboo E. toads F. cats G. dogs H. the Sun Which option is correct and why?
The correct answer is: bucks.
C
What kind of lakes form when volcanic eruptions create holes that fill with water?
[ "crater lakes", "novel lakes", "artificial lakes", "formation lakes" ]
crater lakes
Answer the following multiple-choice question. Question: What kind of lakes form when volcanic eruptions create holes that fill with water? Options: A. crater lakes B. novel lakes C. artificial lakes D. formation lakes Which option is correct and why?
The correct answer is: crater lakes.
A
What is an atom or group of bonded atoms that has a positive or negative charge?
[ "an ion", "an photon", "an electron", "a neutron" ]
an ion
Answer the following multiple-choice question. Question: What is an atom or group of bonded atoms that has a positive or negative charge? Options: A. an ion B. an photon C. an electron D. a neutron Which option is correct and why?
The correct answer is: an ion.
A
In a model of a hemoglobin molecule, the purple part indicates the presence of what element?
[ "silver", "helium", "gold", "iron" ]
iron
Answer the following multiple-choice question. Question: In a model of a hemoglobin molecule, the purple part indicates the presence of what element? Options: A. silver B. helium C. gold D. iron Which option is correct and why?
The correct answer is: iron.
D
what are clouds formed from?
[ "water vapor", "oxygen", "Heat energy", "heating liquids", "evaporation", "carbon dioxide", "air", "boiling" ]
water vapor
Answer the following multiple-choice question. Question: what are clouds formed from? Options: A. water vapor B. oxygen C. Heat energy D. heating liquids E. evaporation F. carbon dioxide G. air H. boiling Which option is correct and why?
The correct answer is: water vapor.
A
A light is refracted when
[ "it shines at a gem", "it shines at a mirror", "it reflects off a spoon", "it reflects off a car" ]
it shines at a gem
Answer the following multiple-choice question. Question: A light is refracted when Options: A. it shines at a gem B. it shines at a mirror C. it reflects off a spoon D. it reflects off a car Which option is correct and why?
The correct answer is: it shines at a gem.
A
Eukaryotic cells contain what type of structures that possess special functions?
[ "organelles", "cell membranes", "fibers", "chloroplasts" ]
organelles
Answer the following multiple-choice question. Question: Eukaryotic cells contain what type of structures that possess special functions? Options: A. organelles B. cell membranes C. fibers D. chloroplasts Which option is correct and why?
The correct answer is: organelles.
A
What was formed by precipitation and runoff?
[ "a hydraulic system", "streams.", "The Caspian Sea", "kalenchoes", "near the shoreline", "swamp vegetation", "Calcium carbonate", "patch reefs" ]
The Caspian Sea
Answer the following multiple-choice question. Question: What was formed by precipitation and runoff? Options: A. a hydraulic system B. streams. C. The Caspian Sea D. kalenchoes E. near the shoreline F. swamp vegetation G. Calcium carbonate H. patch reefs Which option is correct and why?
The correct answer is: The Caspian Sea.
C
A mold is an imprint of an organism left in what?
[ "rock", "band", "magma", "fossil" ]
rock
Answer the following multiple-choice question. Question: A mold is an imprint of an organism left in what? Options: A. rock B. band C. magma D. fossil Which option is correct and why?
The correct answer is: rock.
A
Which of these could be a reason why the stars seem to be in a different place at dusk than at dawn?
[ "rotation of the sky", "rotation of the sun", "rotation of the earth", "rotation of the person" ]
rotation of the earth
Answer the following multiple-choice question. Question: Which of these could be a reason why the stars seem to be in a different place at dusk than at dawn? Options: A. rotation of the sky B. rotation of the sun C. rotation of the earth D. rotation of the person Which option is correct and why?
The correct answer is: rotation of the earth.
C
What has lower temperatures?
[ "peachleaf willow", "fur seals", "the Sun", "the equator", "the mountains", "aqueous solution", "solid, liquid, gas", "fire" ]
the mountains
Answer the following multiple-choice question. Question: What has lower temperatures? Options: A. peachleaf willow B. fur seals C. the Sun D. the equator E. the mountains F. aqueous solution G. solid, liquid, gas H. fire Which option is correct and why?
The correct answer is: the mountains.
E
What is the name for a kind of animal that eats a mix of plant and animal foods.
[ "an herbivore", "an smorgasbord", "an omnivore", "a carnivore" ]
an omnivore
Answer the following multiple-choice question. Question: What is the name for a kind of animal that eats a mix of plant and animal foods. Options: A. an herbivore B. an smorgasbord C. an omnivore D. a carnivore Which option is correct and why?
The correct answer is: an omnivore.
C
What is a trait whose allele is found on a sex chromosome called?
[ "dimorphism - linked trait", "genomic trait", "gender trait", "sex-linked trait" ]
sex-linked trait
Answer the following multiple-choice question. Question: What is a trait whose allele is found on a sex chromosome called? Options: A. dimorphism - linked trait B. genomic trait C. gender trait D. sex-linked trait Which option is correct and why?
The correct answer is: sex-linked trait.
D
What are adapted to very dry environments?
[ "otters", "toads", "plants", "cacti", "seeds", "adaptations", "alpacas", "spores" ]
cacti
Answer the following multiple-choice question. Question: What are adapted to very dry environments? Options: A. otters B. toads C. plants D. cacti E. seeds F. adaptations G. alpacas H. spores Which option is correct and why?
The correct answer is: cacti.
D
What zone is outside the radiative zone?
[ "convection zone", "peripheral zone", "activation zone", "diffusion zone" ]
convection zone
Answer the following multiple-choice question. Question: What zone is outside the radiative zone? Options: A. convection zone B. peripheral zone C. activation zone D. diffusion zone Which option is correct and why?
The correct answer is: convection zone.
A
what is essential for evolution to occur?
[ "random changes in genes", "that material's properties", "cancer", "remains of prehistoric life", "h2o", "Plant reproduction", "revolutions", "the environment" ]
random changes in genes
Answer the following multiple-choice question. Question: what is essential for evolution to occur? Options: A. random changes in genes B. that material's properties C. cancer D. remains of prehistoric life E. h2o F. Plant reproduction G. revolutions H. the environment Which option is correct and why?
The correct answer is: random changes in genes.
A
Billions of what inside the human digestive tract help us digest food, make vitamins and play other important roles?
[ "red blood cells", "neurons", "viruses", "bacteria" ]
bacteria
Answer the following multiple-choice question. Question: Billions of what inside the human digestive tract help us digest food, make vitamins and play other important roles? Options: A. red blood cells B. neurons C. viruses D. bacteria Which option is correct and why?
The correct answer is: bacteria.
D
What enzyme is found in the small intestine catalyzes the hydrolysis of lactose?
[ "amylase", "lipase", "lactase", "elastases" ]
lactase
Answer the following multiple-choice question. Question: What enzyme is found in the small intestine catalyzes the hydrolysis of lactose? Options: A. amylase B. lipase C. lactase D. elastases Which option is correct and why?
The correct answer is: lactase.
C
Members of what kingdom that shed their leaves seasonally each year are called deciduous.
[ "Fungi", "Winter", "air cools", "vegetation", "Animalia", "Protista", "epidermal", "Plantae" ]
Plantae
Answer the following multiple-choice question. Question: Members of what kingdom that shed their leaves seasonally each year are called deciduous. Options: A. Fungi B. Winter C. air cools D. vegetation E. Animalia F. Protista G. epidermal H. Plantae Which option is correct and why?
The correct answer is: Plantae.
A
transportation equipped with what is used for moving people across bodies of water
[ "snorkels", "engines", "energy", "Fuel cells", "Limbs", "wheels", "Weight", "tracks" ]
engines
Answer the following multiple-choice question. Question: transportation equipped with what is used for moving people across bodies of water Options: A. snorkels B. engines C. energy D. Fuel cells E. Limbs F. wheels G. Weight H. tracks Which option is correct and why?
The correct answer is: engines.
B
Living species of chordates are classified into three major subphyla: vertebrata, urochordata, and what?
[ "invertebrates", "cephalochordata", "spirogyra", "xerophyte" ]
cephalochordata
Answer the following multiple-choice question. Question: Living species of chordates are classified into three major subphyla: vertebrata, urochordata, and what? Options: A. invertebrates B. cephalochordata C. spirogyra D. xerophyte Which option is correct and why?
The correct answer is: cephalochordata.
B
What sciences are the study of living organisms?
[ "earth sciences", "life sciences", "physical sciences", "social sciences" ]
life sciences
Answer the following multiple-choice question. Question: What sciences are the study of living organisms? Options: A. earth sciences B. life sciences C. physical sciences D. social sciences Which option is correct and why?
The correct answer is: life sciences.
B
If you're in the North Pole the North Star may be visible when?
[ "a weed", "two months", "a day", "all year round" ]
all year round
Answer the following multiple-choice question. Question: If you're in the North Pole the North Star may be visible when? Options: A. a weed B. two months C. a day D. all year round Which option is correct and why?
The correct answer is: all year round.
D
What are plants in the diploid generation called?
[ "sporophytes", "monocots", "haplocytes", "keratinocytes" ]
sporophytes
Answer the following multiple-choice question. Question: What are plants in the diploid generation called? Options: A. sporophytes B. monocots C. haplocytes D. keratinocytes Which option is correct and why?
The correct answer is: sporophytes.
A
What do phase changes not change?
[ "Time and energy", "properties of object", "Heat energy", "color of object", "population movement", "shape of object", "amount of matter", "Molecular kinetic energy" ]
amount of matter
Answer the following multiple-choice question. Question: What do phase changes not change? Options: A. Time and energy B. properties of object C. Heat energy D. color of object E. population movement F. shape of object G. amount of matter H. Molecular kinetic energy Which option is correct and why?
The correct answer is: amount of matter.
A
If the stars in the sky above your home vary from month to month,
[ "that is a new phenomenon", "that is expected due to the axis", "that is very scary", "that is rare and unusual" ]
that is expected due to the axis
Answer the following multiple-choice question. Question: If the stars in the sky above your home vary from month to month, Options: A. that is a new phenomenon B. that is expected due to the axis C. that is very scary D. that is rare and unusual Which option is correct and why?
The correct answer is: that is expected due to the axis.
B
What is formed when hot lava cools?
[ "mineral crystals", "lava rock", "hydrogen crystals", "magma crystals" ]
mineral crystals
Answer the following multiple-choice question. Question: What is formed when hot lava cools? Options: A. mineral crystals B. lava rock C. hydrogen crystals D. magma crystals Which option is correct and why?
The correct answer is: mineral crystals.
A
What is the term for something left behind by once-living organisms?
[ "fossils", "decay", "deposits", "waste matter" ]
fossils
Answer the following multiple-choice question. Question: What is the term for something left behind by once-living organisms? Options: A. fossils B. decay C. deposits D. waste matter Which option is correct and why?
The correct answer is: fossils.
A
What does cooking an egg cause?
[ "depress neuronal excitability", "hatching of the egg", "melting of the egg", "Something that causes allergies", "freezing of the egg", "chemical reaction in the egg", "death and devastation", "DNA damage and mutations" ]
chemical reaction in the egg
Answer the following multiple-choice question. Question: What does cooking an egg cause? Options: A. depress neuronal excitability B. hatching of the egg C. melting of the egg D. Something that causes allergies E. freezing of the egg F. chemical reaction in the egg G. death and devastation H. DNA damage and mutations Which option is correct and why?
The correct answer is: chemical reaction in the egg.
A
What do the hair cells in the cochlea release when they bend?
[ "hormones", "neurotransmitters", "lipids", "receptors" ]
neurotransmitters
Answer the following multiple-choice question. Question: What do the hair cells in the cochlea release when they bend? Options: A. hormones B. neurotransmitters C. lipids D. receptors Which option is correct and why?
The correct answer is: neurotransmitters.
B
Sensory organs that respond to particular sensory stimuli contain cells called what?
[ "sensory receptors", "artificial receptors", "whole receptors", "stimulus receptor" ]
sensory receptors
Answer the following multiple-choice question. Question: Sensory organs that respond to particular sensory stimuli contain cells called what? Options: A. sensory receptors B. artificial receptors C. whole receptors D. stimulus receptor Which option is correct and why?
The correct answer is: sensory receptors.
A
In a model of an atom, the level with the least energy is the one closest to what?
[ "center", "nucleus", "surface", "protons" ]
nucleus
Answer the following multiple-choice question. Question: In a model of an atom, the level with the least energy is the one closest to what? Options: A. center B. nucleus C. surface D. protons Which option is correct and why?
The correct answer is: nucleus.
B
The sporophyte phase is the longest phase in the life of what?
[ "angiosperm", "arthropod", "gymnosperm", "echinoderm" ]
gymnosperm
Answer the following multiple-choice question. Question: The sporophyte phase is the longest phase in the life of what? Options: A. angiosperm B. arthropod C. gymnosperm D. echinoderm Which option is correct and why?
The correct answer is: gymnosperm.
C
In the cellular process of transcription, dna code is converted into what other kind of code?
[ "sna", "fna", "rna", "dpa" ]
rna
Answer the following multiple-choice question. Question: In the cellular process of transcription, dna code is converted into what other kind of code? Options: A. sna B. fna C. rna D. dpa Which option is correct and why?
The correct answer is: rna.
C
Chloroplasts in shrubs scrub carbon from the air and return
[ "breathable air", "tears", "sweat", "water" ]
breathable air
Answer the following multiple-choice question. Question: Chloroplasts in shrubs scrub carbon from the air and return Options: A. breathable air B. tears C. sweat D. water Which option is correct and why?
The correct answer is: breathable air.
A
What is the release of particles and/or energy from the nucleus of an atom described as?
[ "kinetic energy", "radioactivity", "momentum", "temperature" ]
radioactivity
Answer the following multiple-choice question. Question: What is the release of particles and/or energy from the nucleus of an atom described as? Options: A. kinetic energy B. radioactivity C. momentum D. temperature Which option is correct and why?
The correct answer is: radioactivity.
B
Perspiration leaving the torso through evaporation helps
[ "quench it's thirst", "heat it up", "cool it down", "wash it off" ]
cool it down
Answer the following multiple-choice question. Question: Perspiration leaving the torso through evaporation helps Options: A. quench it's thirst B. heat it up C. cool it down D. wash it off Which option is correct and why?
The correct answer is: cool it down.
C
What can help with seeing in the dark?
[ "bushes", "Eyedroppers", "Magic", "satellites", "cactuses", "Electricity", "Telescopes", "focusing a lens" ]
Electricity
Answer the following multiple-choice question. Question: What can help with seeing in the dark? Options: A. bushes B. Eyedroppers C. Magic D. satellites E. cactuses F. Electricity G. Telescopes H. focusing a lens Which option is correct and why?
The correct answer is: Electricity.
A
What is one way animals learn to behave?
[ "garbage", "Generating heat", "Space travel", "running and lifting", "Time and energy", "exercise", "money", "Riding a bike" ]
Time and energy
Answer the following multiple-choice question. Question: What is one way animals learn to behave? Options: A. garbage B. Generating heat C. Space travel D. running and lifting E. Time and energy F. exercise G. money H. Riding a bike Which option is correct and why?
The correct answer is: Time and energy.
E
Since eddy currents and magnetic damping occur only in conductors, recycling centers can use these to separate metals from other materials?
[ "magnets", "alloys", "cranes", "particles" ]
magnets
Answer the following multiple-choice question. Question: Since eddy currents and magnetic damping occur only in conductors, recycling centers can use these to separate metals from other materials? Options: A. magnets B. alloys C. cranes D. particles Which option is correct and why?
The correct answer is: magnets.
A
What are needed after antibodies won't survive in body fluids?
[ "booster shots", "Veins and arteries.", "chicken pox", "Energy.", "gun shots", "kinetic energy", "diseased tissue", "turn to a doctor" ]
booster shots
Answer the following multiple-choice question. Question: What are needed after antibodies won't survive in body fluids? Options: A. booster shots B. Veins and arteries. C. chicken pox D. Energy. E. gun shots F. kinetic energy G. diseased tissue H. turn to a doctor Which option is correct and why?
The correct answer is: booster shots.
A
mimicry is used for avoiding predators by animals by camouflaging as what kind of animal?
[ "frightful", "weak", "tame", "vulnerable" ]
frightful
Answer the following multiple-choice question. Question: mimicry is used for avoiding predators by animals by camouflaging as what kind of animal? Options: A. frightful B. weak C. tame D. vulnerable Which option is correct and why?
The correct answer is: frightful.
A
Radar maps of venus show that it has mountains, canyons and volcanoes surrounded by plains of what?
[ "helium", "lava", "grasses", "water" ]
lava
Answer the following multiple-choice question. Question: Radar maps of venus show that it has mountains, canyons and volcanoes surrounded by plains of what? Options: A. helium B. lava C. grasses D. water Which option is correct and why?
The correct answer is: lava.
B
What do plants respond to?
[ "Energy.", "heat produced", "Chemical energy", "sun's heat", "the environment", "heat energy", "Sulfur dioxide", "temperature" ]
temperature
Answer the following multiple-choice question. Question: What do plants respond to? Options: A. Energy. B. heat produced C. Chemical energy D. sun's heat E. the environment F. heat energy G. Sulfur dioxide H. temperature Which option is correct and why?
The correct answer is: temperature.
A
With the exception of allergies, what may cause a person to seek medical attention?
[ "Contact with latex", "a tree falling", "Organs within the body.", "Contact with baby chicks", "prolactin release", "Contact with peanut butter", "hypothyroidism", "Contact with microorganisms" ]
Contact with microorganisms
Answer the following multiple-choice question. Question: With the exception of allergies, what may cause a person to seek medical attention? Options: A. Contact with latex B. a tree falling C. Organs within the body. D. Contact with baby chicks E. prolactin release F. Contact with peanut butter G. hypothyroidism H. Contact with microorganisms Which option is correct and why?
The correct answer is: Contact with microorganisms.
A
The three greatest proximate threats to biodiversity are habitat loss, overharvesting, and introduction of what?
[ "carbon monoxide", "exotic species", "carbon dioxide", "solar radiation" ]
exotic species
Answer the following multiple-choice question. Question: The three greatest proximate threats to biodiversity are habitat loss, overharvesting, and introduction of what? Options: A. carbon monoxide B. exotic species C. carbon dioxide D. solar radiation Which option is correct and why?
The correct answer is: exotic species.
B
what are formed by carbonic acid in groundwater seeping through rock dissolving limestone
[ "oceans", "Calcium carbonate", "coral reefs", "enormous rooms", "a solute", "creeks", "Greenhouse gasses", "a hydraulic system" ]
enormous rooms
Answer the following multiple-choice question. Question: what are formed by carbonic acid in groundwater seeping through rock dissolving limestone Options: A. oceans B. Calcium carbonate C. coral reefs D. enormous rooms E. a solute F. creeks G. Greenhouse gasses H. a hydraulic system Which option is correct and why?
The correct answer is: enormous rooms.
D
When food enters the stomach after a period of fasting, a drop in what initiates the conversion of pepsinogen to pepsin?
[ "calcium", "ph", "acid", "white blood cells" ]
ph
Answer the following multiple-choice question. Question: When food enters the stomach after a period of fasting, a drop in what initiates the conversion of pepsinogen to pepsin? Options: A. calcium B. ph C. acid D. white blood cells Which option is correct and why?
The correct answer is: ph.
B
Vesicle transport requires energy and a what?
[ "activity", "major threat to health", "metabolic reaction", "hydration", "biofuel", "wavelengths and photons", "carrier molecule", "Vibrations." ]
carrier molecule
Answer the following multiple-choice question. Question: Vesicle transport requires energy and a what? Options: A. activity B. major threat to health C. metabolic reaction D. hydration E. biofuel F. wavelengths and photons G. carrier molecule H. Vibrations. Which option is correct and why?
The correct answer is: carrier molecule.
A
The cycle of copper reacting is a good example of what principle?
[ "law of inertia", "conservation of mass", "conservation of energy", "conservation of momentum" ]
conservation of mass
Answer the following multiple-choice question. Question: The cycle of copper reacting is a good example of what principle? Options: A. law of inertia B. conservation of mass C. conservation of energy D. conservation of momentum Which option is correct and why?
The correct answer is: conservation of mass.
B
What do you need to do to make food ready for human consumption?
[ "throw it into the ocean", "stomp on it with your feet", "create a chemical reaction using a stove", "walk to a cemetary" ]
create a chemical reaction using a stove
Answer the following multiple-choice question. Question: What do you need to do to make food ready for human consumption? Options: A. throw it into the ocean B. stomp on it with your feet C. create a chemical reaction using a stove D. walk to a cemetary Which option is correct and why?
The correct answer is: create a chemical reaction using a stove.
C
Centrifuges use what to perform their task?
[ "magnetism", "absorption", "jets", "inertia" ]
inertia
Answer the following multiple-choice question. Question: Centrifuges use what to perform their task? Options: A. magnetism B. absorption C. jets D. inertia Which option is correct and why?
The correct answer is: inertia.
D
What is the total number of codons?
[ "45", "68", "64", "51" ]
64
Answer the following multiple-choice question. Question: What is the total number of codons? Options: A. 45 B. 68 C. 64 D. 51 Which option is correct and why?
The correct answer is: 64.
C
What branch of physical science looks at how heat, work, and various forms of energy are related to one another?
[ "frigidity", "transformations", "photosynthesis", "thermodynamics" ]
thermodynamics
Answer the following multiple-choice question. Question: What branch of physical science looks at how heat, work, and various forms of energy are related to one another? Options: A. frigidity B. transformations C. photosynthesis D. thermodynamics Which option is correct and why?
The correct answer is: thermodynamics.
D
Fossils themselves and the order in which they appear in are generally collectively called what?
[ "coal record", "fossil record", "fossil magnitude", "fuel cycle" ]
fossil record
Answer the following multiple-choice question. Question: Fossils themselves and the order in which they appear in are generally collectively called what? Options: A. coal record B. fossil record C. fossil magnitude D. fuel cycle Which option is correct and why?
The correct answer is: fossil record.
B
When the seasons change from the summer to the fall, the amount of what will decrease?
[ "air", "matter", "Energy.", "Solar energy", "Light", "sunlight", "energy", "planets" ]
sunlight
Answer the following multiple-choice question. Question: When the seasons change from the summer to the fall, the amount of what will decrease? Options: A. air B. matter C. Energy. D. Solar energy E. Light F. sunlight G. energy H. planets Which option is correct and why?
The correct answer is: sunlight.
A
What is the brightest star in the orion constellation?
[ "sol", "rigel", "natel", "omicron" ]
rigel
Answer the following multiple-choice question. Question: What is the brightest star in the orion constellation? Options: A. sol B. rigel C. natel D. omicron Which option is correct and why?
The correct answer is: rigel.
B
The radial artery and which artery parallel their namesake bones, giving off smaller branches until they reach the wrist, or carpal region?
[ "triceps", "ulnar", "biceps", "humerus" ]
ulnar
Answer the following multiple-choice question. Question: The radial artery and which artery parallel their namesake bones, giving off smaller branches until they reach the wrist, or carpal region? Options: A. triceps B. ulnar C. biceps D. humerus Which option is correct and why?
The correct answer is: ulnar.
B
A pack of wolves eat the sheep before a grizzly bear can get to them, what have the wolves done to the bear?
[ "out competed", "out lasted", "out ran", "out lived" ]
out competed
Answer the following multiple-choice question. Question: A pack of wolves eat the sheep before a grizzly bear can get to them, what have the wolves done to the bear? Options: A. out competed B. out lasted C. out ran D. out lived Which option is correct and why?
The correct answer is: out competed.
A
What do atoms become if they lose or gain electrons?
[ "particles", "ions", "particulates", "toxins" ]
ions
Answer the following multiple-choice question. Question: What do atoms become if they lose or gain electrons? Options: A. particles B. ions C. particulates D. toxins Which option is correct and why?
The correct answer is: ions.
B
What is pollution that enters water at just one point called?
[ "point supply pollution", "point supply pollution", "point source pollution", "entry point pollution" ]
point source pollution
Answer the following multiple-choice question. Question: What is pollution that enters water at just one point called? Options: A. point supply pollution B. point supply pollution C. point source pollution D. entry point pollution Which option is correct and why?
The correct answer is: point source pollution.
C
What element is essential for amino acid and nucleic acid production?
[ "oxygen", "nitrogen", "carbon", "hydrogen" ]
nitrogen
Answer the following multiple-choice question. Question: What element is essential for amino acid and nucleic acid production? Options: A. oxygen B. nitrogen C. carbon D. hydrogen Which option is correct and why?
The correct answer is: nitrogen.
B
What is the most familiar fibrous protein found in your body?
[ "keratin", "cellulose", "Actin", "Collagen" ]
keratin
Answer the following multiple-choice question. Question: What is the most familiar fibrous protein found in your body? Options: A. keratin B. cellulose C. Actin D. Collagen Which option is correct and why?
The correct answer is: keratin.
A
Which activity can transform electrical energy to heat energy
[ "Lighting a fire with a match", "exercise", "Cars", "wind", "engines", "Taking a shower", "Watching TV", "Cooking" ]
Cooking
Answer the following multiple-choice question. Question: Which activity can transform electrical energy to heat energy Options: A. Lighting a fire with a match B. exercise C. Cars D. wind E. engines F. Taking a shower G. Watching TV H. Cooking Which option is correct and why?
The correct answer is: Cooking.
A
What can infect and destroy helper T cells?
[ "tissues", "anemia", "antibodies", "cigarettes", "flagella", "Chemical energy", "vipers", "adding heat" ]
antibodies
Answer the following multiple-choice question. Question: What can infect and destroy helper T cells? Options: A. tissues B. anemia C. antibodies D. cigarettes E. flagella F. Chemical energy G. vipers H. adding heat Which option is correct and why?
The correct answer is: antibodies.
C
What is the name for a series of changes in the reproductive system of mature females that repeats every month on average?
[ "periodic table", "urinary cycle", "menstrual cycle", "puberty" ]
menstrual cycle
Answer the following multiple-choice question. Question: What is the name for a series of changes in the reproductive system of mature females that repeats every month on average? Options: A. periodic table B. urinary cycle C. menstrual cycle D. puberty Which option is correct and why?
The correct answer is: menstrual cycle.
C
A red blood cell will swell and burst when placed in a?
[ "dissolved solution", "hypotonic solution", "exothermic solution", "acidic solution" ]
hypotonic solution
Answer the following multiple-choice question. Question: A red blood cell will swell and burst when placed in a? Options: A. dissolved solution B. hypotonic solution C. exothermic solution D. acidic solution Which option is correct and why?
The correct answer is: hypotonic solution.
B
What will rocks all do?
[ "Bend", "Erode", "Melt", "die", "Dance", "Run", "survive", "expand" ]
Erode
Answer the following multiple-choice question. Question: What will rocks all do? Options: A. Bend B. Erode C. Melt D. die E. Dance F. Run G. survive H. expand Which option is correct and why?
The correct answer is: Erode.
B
Converting electricity into different types of energy may be done by
[ "rocks", "folding chairs", "squirrels", "DVD players" ]
DVD players
Answer the following multiple-choice question. Question: Converting electricity into different types of energy may be done by Options: A. rocks B. folding chairs C. squirrels D. DVD players Which option is correct and why?
The correct answer is: DVD players.
D
what uses cell division to grow and repair itself?
[ "amoeba", "fungi", "density", "animals", "h2o", "plants", "clouds", "grass" ]
plants
Answer the following multiple-choice question. Question: what uses cell division to grow and repair itself? Options: A. amoeba B. fungi C. density D. animals E. h2o F. plants G. clouds H. grass Which option is correct and why?
The correct answer is: plants.
A
seeds may grow when
[ "ingested", "roasted", "left alone", "placed underground" ]
placed underground
Answer the following multiple-choice question. Question: seeds may grow when Options: A. ingested B. roasted C. left alone D. placed underground Which option is correct and why?
The correct answer is: placed underground.
D
Which likely aids in plant reproduction?
[ "the gravity on Mars", "the influx of human pollution", "the cooking of rice pilaf", "a family of badgers hunting and gathering" ]
a family of badgers hunting and gathering
Answer the following multiple-choice question. Question: Which likely aids in plant reproduction? Options: A. the gravity on Mars B. the influx of human pollution C. the cooking of rice pilaf D. a family of badgers hunting and gathering Which option is correct and why?
The correct answer is: a family of badgers hunting and gathering.
D
Glycolysis harvests chemical energy by oxidizing glucose to what?
[ "oxygen", "cellulose", "pyruvate", "chlorophyll" ]
pyruvate
Answer the following multiple-choice question. Question: Glycolysis harvests chemical energy by oxidizing glucose to what? Options: A. oxygen B. cellulose C. pyruvate D. chlorophyll Which option is correct and why?
The correct answer is: pyruvate.
C
Which of the following keeps food viable for extended flights?
[ "evaporation", "microwaving", "boiling", "freeze drying", "layers of fat", "deep frying", "mechanical", "Dehydration" ]
freeze drying
Answer the following multiple-choice question. Question: Which of the following keeps food viable for extended flights? Options: A. evaporation B. microwaving C. boiling D. freeze drying E. layers of fat F. deep frying G. mechanical H. Dehydration Which option is correct and why?
The correct answer is: freeze drying.
D
In amniotes that lay eggs, the shell of the egg provides protection for the developing embryo while being permeable enough to allow for the exchange of carbon dioxide and this?
[ "tissue", "Protein", "oxygen", "gas" ]
oxygen
Answer the following multiple-choice question. Question: In amniotes that lay eggs, the shell of the egg provides protection for the developing embryo while being permeable enough to allow for the exchange of carbon dioxide and this? Options: A. tissue B. Protein C. oxygen D. gas Which option is correct and why?
The correct answer is: oxygen.
C
What kind of interactions do polar substances experience?
[ "axial interactions", "monopole-dipole interactions", "dipole-dipole interactions", "monopole-monopole interactions" ]
dipole-dipole interactions
Answer the following multiple-choice question. Question: What kind of interactions do polar substances experience? Options: A. axial interactions B. monopole-dipole interactions C. dipole-dipole interactions D. monopole-monopole interactions Which option is correct and why?
The correct answer is: dipole-dipole interactions.
C
An example of an acquired characteristic is
[ "the thickness of a horse's mane", "the length of a horse's mane", "the number of legs a horse has", "the color of a horse's mane" ]
the length of a horse's mane
Answer the following multiple-choice question. Question: An example of an acquired characteristic is Options: A. the thickness of a horse's mane B. the length of a horse's mane C. the number of legs a horse has D. the color of a horse's mane Which option is correct and why?
The correct answer is: the length of a horse's mane.
B
Having thousands of new babies means what?
[ "major threat to health", "no natural predators", "Animal survival", "the body's largest organ", "members of their own species", "Plant growth is reduced", "Reproduction", "genetic material" ]
no natural predators
Answer the following multiple-choice question. Question: Having thousands of new babies means what? Options: A. major threat to health B. no natural predators C. Animal survival D. the body's largest organ E. members of their own species F. Plant growth is reduced G. Reproduction H. genetic material Which option is correct and why?
The correct answer is: no natural predators.
B
What is the term for nutrients the body needs in relatively small amounts, including vitamins and minerals?
[ "insignificant nutrients", "minor nutrients", "micronutrients", "trace nutrients" ]
micronutrients
Answer the following multiple-choice question. Question: What is the term for nutrients the body needs in relatively small amounts, including vitamins and minerals? Options: A. insignificant nutrients B. minor nutrients C. micronutrients D. trace nutrients Which option is correct and why?
The correct answer is: micronutrients.
C
If a bear has thick legs fur, then
[ "her mom was very old", "his hair is blonde", "her arms are wide", "his ancestors had the same" ]
his ancestors had the same
Answer the following multiple-choice question. Question: If a bear has thick legs fur, then Options: A. her mom was very old B. his hair is blonde C. her arms are wide D. his ancestors had the same Which option is correct and why?
The correct answer is: his ancestors had the same.
D
What might have more closely packed matter
[ "air", "wood", "gold", "water" ]
gold
Answer the following multiple-choice question. Question: What might have more closely packed matter Options: A. air B. wood C. gold D. water Which option is correct and why?
The correct answer is: gold.
C
beets tolerate how much water expansion
[ "cooled", "adapt", "grow", "Winter", "heat", "energy", "growth", "mild" ]
mild
Answer the following multiple-choice question. Question: beets tolerate how much water expansion Options: A. cooled B. adapt C. grow D. Winter E. heat F. energy G. growth H. mild Which option is correct and why?
The correct answer is: mild.
A
When organisms penetrate a rock, they accelerate breakdown by chemical means and what other means?
[ "geological", "temperature", "mechanical", "ecological" ]
mechanical
Answer the following multiple-choice question. Question: When organisms penetrate a rock, they accelerate breakdown by chemical means and what other means? Options: A. geological B. temperature C. mechanical D. ecological Which option is correct and why?
The correct answer is: mechanical.
C
gneous rocks are formed when magma
[ "barrel-shaped", "retreats", "expands", "calcite", "heating liquids", "condenses", "Water expanding", "solidifies" ]
solidifies
Answer the following multiple-choice question. Question: gneous rocks are formed when magma Options: A. barrel-shaped B. retreats C. expands D. calcite E. heating liquids F. condenses G. Water expanding H. solidifies Which option is correct and why?
The correct answer is: solidifies.
A
What can cause animals to become dangerous?
[ "threatened", "Befriending them", "influenza", "hyperthyroidism", "Helping them", "Loud noises", "Happy thoughts", "steroids" ]
Loud noises
Answer the following multiple-choice question. Question: What can cause animals to become dangerous? Options: A. threatened B. Befriending them C. influenza D. hyperthyroidism E. Helping them F. Loud noises G. Happy thoughts H. steroids Which option is correct and why?
The correct answer is: Loud noises.
A
chemical weathering causes iron to oxidize in what?
[ "calcite", "limestone", "In sediment", "the skin", "graptolites", "loose soil", "body water", "soils" ]
limestone
Answer the following multiple-choice question. Question: chemical weathering causes iron to oxidize in what? Options: A. calcite B. limestone C. In sediment D. the skin E. graptolites F. loose soil G. body water H. soils Which option is correct and why?
The correct answer is: limestone.
B
Forces which cause objects to turn around continuously in a circle are known as?
[ "frictional forces", "hydrodynamic forces", "centripetal forces", "tension forces" ]
centripetal forces
Answer the following multiple-choice question. Question: Forces which cause objects to turn around continuously in a circle are known as? Options: A. frictional forces B. hydrodynamic forces C. centripetal forces D. tension forces Which option is correct and why?
The correct answer is: centripetal forces.
C
What term given to animals like reptiles is a synonym for ectothermic, which means that their heat comes from their environment?
[ "thermal regulating", "cold-blooded", "warm-blooded", "hot-blooded" ]
cold-blooded
Answer the following multiple-choice question. Question: What term given to animals like reptiles is a synonym for ectothermic, which means that their heat comes from their environment? Options: A. thermal regulating B. cold-blooded C. warm-blooded D. hot-blooded Which option is correct and why?
The correct answer is: cold-blooded.
B
What do cells secrete that binds to receptors?
[ "endorphans", "factor", "stress", "proteins" ]
factor
Answer the following multiple-choice question. Question: What do cells secrete that binds to receptors? Options: A. endorphans B. factor C. stress D. proteins Which option is correct and why?
The correct answer is: factor.
B