question
stringlengths
4
399
choices
listlengths
4
8
correct_answer
stringlengths
1
116
prompt
stringlengths
146
739
completion
stringlengths
25
140
answer
stringclasses
5 values
Like sharks, nearly the entire human skeleton during a specific pre-birth developmental stage is made of what connective tissue?
[ "chloroplasm", "collagen", "cartilage", "phloem" ]
cartilage
Answer the following multiple-choice question. Question: Like sharks, nearly the entire human skeleton during a specific pre-birth developmental stage is made of what connective tissue? Options: A. chloroplasm B. collagen C. cartilage D. phloem Which option is correct and why?
The correct answer is: cartilage.
C
What two things are a phospholipid molecules composed of?
[ "hydrophillic head , and substrate tails", "hemophillic head, and substrate tails", "hydrophillic head , and hydrophobic tails", "hydrophillic head , and adhesion tails" ]
hydrophillic head , and hydrophobic tails
Answer the following multiple-choice question. Question: What two things are a phospholipid molecules composed of? Options: A. hydrophillic head , and substrate tails B. hemophillic head, and substrate tails C. hydrophillic head , and hydrophobic tails D. hydrophillic head , and adhesion tails Which option is correct and why?
The correct answer is: hydrophillic head , and hydrophobic tails.
C
What causes blue litmus to turn red?
[ "base", "carbon", "oxygen", "acid" ]
acid
Answer the following multiple-choice question. Question: What causes blue litmus to turn red? Options: A. base B. carbon C. oxygen D. acid Which option is correct and why?
The correct answer is: acid.
D
What is a benefit of low sulfur coal over high sulfur coal?
[ "lower cost", "greater enerty", "less erosion", "less pollution" ]
less pollution
Answer the following multiple-choice question. Question: What is a benefit of low sulfur coal over high sulfur coal? Options: A. lower cost B. greater enerty C. less erosion D. less pollution Which option is correct and why?
The correct answer is: less pollution.
D
What allows for movement in animals?
[ "the digestive system", "an external framework", "energizing crystals", "Veins and arteries.", "spinning wheels", "burning energy", "arteries", "changing tires" ]
burning energy
Answer the following multiple-choice question. Question: What allows for movement in animals? Options: A. the digestive system B. an external framework C. energizing crystals D. Veins and arteries. E. spinning wheels F. burning energy G. arteries H. changing tires Which option is correct and why?
The correct answer is: burning energy.
A
what flows with ease through soil if it's permeable?
[ "mulch", "wind", "NaCl", "CO 2", "h2o", "oxygen", "vapor", "H20" ]
h2o
Answer the following multiple-choice question. Question: what flows with ease through soil if it's permeable? Options: A. mulch B. wind C. NaCl D. CO 2 E. h2o F. oxygen G. vapor H. H20 Which option is correct and why?
The correct answer is: h2o.
E
Why does water infiltrate the ground?
[ "run-off from flooding", "gravity", "prolonged drought conditions", "because soil and rocks are porous" ]
because soil and rocks are porous
Answer the following multiple-choice question. Question: Why does water infiltrate the ground? Options: A. run-off from flooding B. gravity C. prolonged drought conditions D. because soil and rocks are porous Which option is correct and why?
The correct answer is: because soil and rocks are porous.
D
What is one element used to create caves?
[ "sunlight", "heat energy", "Calcium carbonate", "hydrogen and oxygen", "calcite", "carbonic acid", "less water", "salinity" ]
carbonic acid
Answer the following multiple-choice question. Question: What is one element used to create caves? Options: A. sunlight B. heat energy C. Calcium carbonate D. hydrogen and oxygen E. calcite F. carbonic acid G. less water H. salinity Which option is correct and why?
The correct answer is: carbonic acid.
A
If you were looking for a cold blooded animal a donkey would be
[ "a stuffed animal", "the wrong animal", "the right animal", "a fictional animal" ]
the wrong animal
Answer the following multiple-choice question. Question: If you were looking for a cold blooded animal a donkey would be Options: A. a stuffed animal B. the wrong animal C. the right animal D. a fictional animal Which option is correct and why?
The correct answer is: the wrong animal.
B
How do bats avoid crashing into trees while flying around at night?
[ "they wander around aimlessly lost", "they bounce their screams off of things", "they ask someone where to go", "they see with their eyes" ]
they bounce their screams off of things
Answer the following multiple-choice question. Question: How do bats avoid crashing into trees while flying around at night? Options: A. they wander around aimlessly lost B. they bounce their screams off of things C. they ask someone where to go D. they see with their eyes Which option is correct and why?
The correct answer is: they bounce their screams off of things.
B
Massive quanta, like electrons, also act like macroscopic particles—something we expect, because they are the smallest what?
[ "battalions of matter", "regiments of matter", "depth of matter", "units of matter" ]
units of matter
Answer the following multiple-choice question. Question: Massive quanta, like electrons, also act like macroscopic particles—something we expect, because they are the smallest what? Options: A. battalions of matter B. regiments of matter C. depth of matter D. units of matter Which option is correct and why?
The correct answer is: units of matter.
D
What does fuel convert into?
[ "Sand and rocks", "layers of fat", "Pollution", "Ice or water", "Cold air", "solid, liquid, gas", "carbon dioxide", "Light and heat" ]
Light and heat
Answer the following multiple-choice question. Question: What does fuel convert into? Options: A. Sand and rocks B. layers of fat C. Pollution D. Ice or water E. Cold air F. solid, liquid, gas G. carbon dioxide H. Light and heat Which option is correct and why?
The correct answer is: Light and heat.
A
What season do the largest waves for surfers typically come?
[ "autumn", "summer", "spring", "winter" ]
winter
Answer the following multiple-choice question. Question: What season do the largest waves for surfers typically come? Options: A. autumn B. summer C. spring D. winter Which option is correct and why?
The correct answer is: winter.
D
When you scream in an empty room, you hear an echo due to the noise
[ "eating", "bouncing a ball", "nothing", "bouncing off stuff" ]
bouncing off stuff
Answer the following multiple-choice question. Question: When you scream in an empty room, you hear an echo due to the noise Options: A. eating B. bouncing a ball C. nothing D. bouncing off stuff Which option is correct and why?
The correct answer is: bouncing off stuff.
D
What do you call the splitting of the nucleus of an atom into two smaller nuclei?
[ "nuclear fusion", "nuclear fission", "cell division", "critical fission" ]
nuclear fission
Answer the following multiple-choice question. Question: What do you call the splitting of the nucleus of an atom into two smaller nuclei? Options: A. nuclear fusion B. nuclear fission C. cell division D. critical fission Which option is correct and why?
The correct answer is: nuclear fission.
B
The easiest thing to break is
[ "a notebook", "a pair of glasses", "a wall", "a hardcover book" ]
a pair of glasses
Answer the following multiple-choice question. Question: The easiest thing to break is Options: A. a notebook B. a pair of glasses C. a wall D. a hardcover book Which option is correct and why?
The correct answer is: a pair of glasses.
B
What group do insects belong to?
[ "graptolites", "animals", "annelida", "mollusca", "chordata", "honeybees", "arthropods", "more abundant" ]
arthropods
Answer the following multiple-choice question. Question: What group do insects belong to? Options: A. graptolites B. animals C. annelida D. mollusca E. chordata F. honeybees G. arthropods H. more abundant Which option is correct and why?
The correct answer is: arthropods.
A
Where does most geological activity take place?
[ "plate buildings", "plate waves", "plate medians", "plate boundaries" ]
plate boundaries
Answer the following multiple-choice question. Question: Where does most geological activity take place? Options: A. plate buildings B. plate waves C. plate medians D. plate boundaries Which option is correct and why?
The correct answer is: plate boundaries.
D
What connection is required for a newborn baby to begin breathing?
[ "connection to the father", "connection to the placenta", "connection to a ventilator", "connection to a heat source" ]
connection to the placenta
Answer the following multiple-choice question. Question: What connection is required for a newborn baby to begin breathing? Options: A. connection to the father B. connection to the placenta C. connection to a ventilator D. connection to a heat source Which option is correct and why?
The correct answer is: connection to the placenta.
B
What are made in the first step of the scientific method?
[ "patterns", "conclusions", "observations", "hypothesis" ]
observations
Answer the following multiple-choice question. Question: What are made in the first step of the scientific method? Options: A. patterns B. conclusions C. observations D. hypothesis Which option is correct and why?
The correct answer is: observations.
C
Saturn hangs around because of
[ "rocket fuel", "Sega", "a central star", "Saturnalia" ]
a central star
Answer the following multiple-choice question. Question: Saturn hangs around because of Options: A. rocket fuel B. Sega C. a central star D. Saturnalia Which option is correct and why?
The correct answer is: a central star.
C
What may live in large colonies and have complex social behaviors?
[ "spiders", "bees", "planets", "star", "bats", "ants", "Wasps", "toads" ]
ants
Answer the following multiple-choice question. Question: What may live in large colonies and have complex social behaviors? Options: A. spiders B. bees C. planets D. star E. bats F. ants G. Wasps H. toads Which option is correct and why?
The correct answer is: ants.
A
The bear in the wild needs to find other animals to feast.
[ "they never kill", "they only eat", "they are docile", "they are killers" ]
they are killers
Answer the following multiple-choice question. Question: The bear in the wild needs to find other animals to feast. Options: A. they never kill B. they only eat C. they are docile D. they are killers Which option is correct and why?
The correct answer is: they are killers.
D
The wolf raises his family near a
[ "den", "field", "tree", "mother." ]
den
Answer the following multiple-choice question. Question: The wolf raises his family near a Options: A. den B. field C. tree D. mother. Which option is correct and why?
The correct answer is: den.
A
About how many days does it take the moon to make one orbit around the earth?
[ "28", "21", "30", "22" ]
28
Answer the following multiple-choice question. Question: About how many days does it take the moon to make one orbit around the earth? Options: A. 28 B. 21 C. 30 D. 22 Which option is correct and why?
The correct answer is: 28.
A
What do the planets orbit around in the solar system?
[ "the moon", "the Milky Way", "the Earth", "the sun" ]
the sun
Answer the following multiple-choice question. Question: What do the planets orbit around in the solar system? Options: A. the moon B. the Milky Way C. the Earth D. the sun Which option is correct and why?
The correct answer is: the sun.
D
What kind of rock forms when material such as gravel, sand, silt or clay is compacted and cemented together?
[ "ingenious", "limestone", "craters", "sedimentary" ]
sedimentary
Answer the following multiple-choice question. Question: What kind of rock forms when material such as gravel, sand, silt or clay is compacted and cemented together? Options: A. ingenious B. limestone C. craters D. sedimentary Which option is correct and why?
The correct answer is: sedimentary.
D
What is the message sent from the nucleus to the ribosome?
[ "mrna", "dna", "rna", "mitochondria" ]
mrna
Answer the following multiple-choice question. Question: What is the message sent from the nucleus to the ribosome? Options: A. mrna B. dna C. rna D. mitochondria Which option is correct and why?
The correct answer is: mrna.
A
Some _ are nearly microscopic
[ "gastropod shells", "invertebrates", "peachleaf willow", "homogenous", "barnacles", "an organism's body", "Veins and arteries.", "reproduce" ]
invertebrates
Answer the following multiple-choice question. Question: Some _ are nearly microscopic Options: A. gastropod shells B. invertebrates C. peachleaf willow D. homogenous E. barnacles F. an organism's body G. Veins and arteries. H. reproduce Which option is correct and why?
The correct answer is: invertebrates.
B
as Ford lost customers it's earnings
[ "plummeted", "raised", "stayed the same", "fluctuated" ]
plummeted
Answer the following multiple-choice question. Question: as Ford lost customers it's earnings Options: A. plummeted B. raised C. stayed the same D. fluctuated Which option is correct and why?
The correct answer is: plummeted.
A
What shape is the orbit of a planet?
[ "elliptical", "vertical", "spiral", "cleaved" ]
elliptical
Answer the following multiple-choice question. Question: What shape is the orbit of a planet? Options: A. elliptical B. vertical C. spiral D. cleaved Which option is correct and why?
The correct answer is: elliptical.
A
Heavy atmospheric movement is desirable if you have
[ "paper plates", "perfect hair", "a wind turbine", "a badminton match" ]
a wind turbine
Answer the following multiple-choice question. Question: Heavy atmospheric movement is desirable if you have Options: A. paper plates B. perfect hair C. a wind turbine D. a badminton match Which option is correct and why?
The correct answer is: a wind turbine.
C
When a frog is born, it has tiny gills so that it can breathe underwater, even though in adulthood it will
[ "relocate to land", "find lungs useless", "make lung soup", "burn air" ]
relocate to land
Answer the following multiple-choice question. Question: When a frog is born, it has tiny gills so that it can breathe underwater, even though in adulthood it will Options: A. relocate to land B. find lungs useless C. make lung soup D. burn air Which option is correct and why?
The correct answer is: relocate to land.
A
Stratus clouds are associated with cloudy and what type of weather?
[ "cold", "Winter", "rainy", "good", "Pacific", "ligt", "mild", "similar" ]
rainy
Answer the following multiple-choice question. Question: Stratus clouds are associated with cloudy and what type of weather? Options: A. cold B. Winter C. rainy D. good E. Pacific F. ligt G. mild H. similar Which option is correct and why?
The correct answer is: rainy.
C
Which is likely to spread seed?
[ "a car", "a sun beam", "a whale", "a hummingbird" ]
a hummingbird
Answer the following multiple-choice question. Question: Which is likely to spread seed? Options: A. a car B. a sun beam C. a whale D. a hummingbird Which option is correct and why?
The correct answer is: a hummingbird.
D
Which ductless gland releases secretions directly into surrounding tissues and fluids?
[ "endocrine gland", "pineal gland", "marrow gland", "adrenal glands" ]
endocrine gland
Answer the following multiple-choice question. Question: Which ductless gland releases secretions directly into surrounding tissues and fluids? Options: A. endocrine gland B. pineal gland C. marrow gland D. adrenal glands Which option is correct and why?
The correct answer is: endocrine gland.
A
Amines are bases; they react with acids to form what?
[ "oils", "proteins", "ions", "salts" ]
salts
Answer the following multiple-choice question. Question: Amines are bases; they react with acids to form what? Options: A. oils B. proteins C. ions D. salts Which option is correct and why?
The correct answer is: salts.
D
Which bone is derived from the fusion of four very small coccygeal vertebrae?
[ "clavicle", "coccyx", "cranium", "femur" ]
coccyx
Answer the following multiple-choice question. Question: Which bone is derived from the fusion of four very small coccygeal vertebrae? Options: A. clavicle B. coccyx C. cranium D. femur Which option is correct and why?
The correct answer is: coccyx.
B
Mammals require what for breathing?
[ "soil", "energy", "saltwater", "water", "lungs", "glycogen", "air", "oxygen" ]
oxygen
Answer the following multiple-choice question. Question: Mammals require what for breathing? Options: A. soil B. energy C. saltwater D. water E. lungs F. glycogen G. air H. oxygen Which option is correct and why?
The correct answer is: oxygen.
A
Inferior rotation occurs during limb adduction and involves the downward motion of what?
[ "choroidal cavity", "pelvic cavity", "dialysate cavity", "glenoid cavity" ]
glenoid cavity
Answer the following multiple-choice question. Question: Inferior rotation occurs during limb adduction and involves the downward motion of what? Options: A. choroidal cavity B. pelvic cavity C. dialysate cavity D. glenoid cavity Which option is correct and why?
The correct answer is: glenoid cavity.
D
Electron flow allows a battery to do what?
[ "power an electrical device", "disconnect", "move to different locations", "heat is produced", "matter vibrating", "photosynthesis", "fuel cell", "preventing heat transfer" ]
power an electrical device
Answer the following multiple-choice question. Question: Electron flow allows a battery to do what? Options: A. power an electrical device B. disconnect C. move to different locations D. heat is produced E. matter vibrating F. photosynthesis G. fuel cell H. preventing heat transfer Which option is correct and why?
The correct answer is: power an electrical device.
A
What makes the pupils sensitive?
[ "environment", "nerves", "heat", "air", "ultraviolet light", "dilation", "infrared light", "light" ]
dilation
Answer the following multiple-choice question. Question: What makes the pupils sensitive? Options: A. environment B. nerves C. heat D. air E. ultraviolet light F. dilation G. infrared light H. light Which option is correct and why?
The correct answer is: dilation.
A
What type of acid contains inherited instructions for proteins?
[ "HIV", "p53", "genetic acids", "DNA", "SNPs", "protein acid", "RNA", "two" ]
DNA
Answer the following multiple-choice question. Question: 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 Which option is correct and why?
The correct answer is: DNA.
D
A deer is killed and the body is broken down by worms and bacteria. The deer's body is
[ "bigger", "has less mass", "invisible", "the same shape" ]
has less mass
Answer the following multiple-choice question. Question: A deer is killed and the body is broken down by worms and bacteria. The deer's body is Options: A. bigger B. has less mass C. invisible D. the same shape Which option is correct and why?
The correct answer is: has less mass.
B
What do aphids use to detect sound?
[ "antennae", "electricity", "sonar", "Energy", "waves", "lmestone", "ears", "whiskers" ]
antennae
Answer the following multiple-choice question. Question: What do aphids use to detect sound? Options: A. antennae B. electricity C. sonar D. Energy E. waves F. lmestone G. ears H. whiskers Which option is correct and why?
The correct answer is: antennae.
A
Mass multiplied by velocity equals what force?
[ "momentum", "kinetic energy", "bounce", "inertia" ]
momentum
Answer the following multiple-choice question. Question: Mass multiplied by velocity equals what force? Options: A. momentum B. kinetic energy C. bounce D. inertia Which option is correct and why?
The correct answer is: momentum.
A
What do molecules need to do for a reaction to take place?
[ "separate", "collide", "explode", "melt" ]
collide
Answer the following multiple-choice question. Question: What do molecules need to do for a reaction to take place? Options: A. separate B. collide C. explode D. melt Which option is correct and why?
The correct answer is: collide.
B
The primary function of leaves is to collect sunlight and make food by what process?
[ "duplicate process", "nuclear fission", "photosynthesis", "osmosis" ]
photosynthesis
Answer the following multiple-choice question. Question: The primary function of leaves is to collect sunlight and make food by what process? Options: A. duplicate process B. nuclear fission C. photosynthesis D. osmosis Which option is correct and why?
The correct answer is: photosynthesis.
C
If the moon was not present, what would happen to ocean currents?
[ "erosion", "Movement", "decrease", "summer end", "imbalanced", "flooding", "watershred", "rivers" ]
decrease
Answer the following multiple-choice question. Question: If the moon was not present, what would happen to ocean currents? Options: A. erosion B. Movement C. decrease D. summer end E. imbalanced F. flooding G. watershred H. rivers Which option is correct and why?
The correct answer is: decrease.
C
what can preventing the transfer of cause the body to keep warm in an organism?
[ "hair", "Collagen", "sweating", "hydration", "the skin", "exercise", "fur", "energy" ]
energy
Answer the following multiple-choice question. Question: what can preventing the transfer of cause the body to keep warm in an organism? Options: A. hair B. Collagen C. sweating D. hydration E. the skin F. exercise G. fur H. energy Which option is correct and why?
The correct answer is: energy.
A
What reproduce sexually?
[ "ferns", "bulbs", "toads", "Flowers", "legumes", "bamboo", "embryos", "humans" ]
bulbs
Answer the following multiple-choice question. Question: What reproduce sexually? Options: A. ferns B. bulbs C. toads D. Flowers E. legumes F. bamboo G. embryos H. humans Which option is correct and why?
The correct answer is: bulbs.
B
To have a positive impact on the environment
[ "leave lights on", "take shorter showers", "use Styrofoam plates", "take longer showers" ]
take shorter showers
Answer the following multiple-choice question. Question: To have a positive impact on the environment Options: A. leave lights on B. take shorter showers C. use Styrofoam plates D. take longer showers Which option is correct and why?
The correct answer is: take shorter showers.
B
Chondroblasts lead to to what?
[ "migrate", "sweating", "strength", "cartilage", "illness", "anemia", "allow growth", "Leptospirosis" ]
cartilage
Answer the following multiple-choice question. Question: Chondroblasts lead to to what? Options: A. migrate B. sweating C. strength D. cartilage E. illness F. anemia G. allow growth H. Leptospirosis Which option is correct and why?
The correct answer is: cartilage.
D
An electron is accelerated from rest through a potential difference of what?
[ "watts", "volts", "joules", "amperes" ]
volts
Answer the following multiple-choice question. Question: An electron is accelerated from rest through a potential difference of what? Options: A. watts B. volts C. joules D. amperes Which option is correct and why?
The correct answer is: volts.
B
All living things are capable of what process whereby living things give rise to offspring?
[ "reproduction", "mitosis", "differentiation", "cell division" ]
reproduction
Answer the following multiple-choice question. Question: All living things are capable of what process whereby living things give rise to offspring? Options: A. reproduction B. mitosis C. differentiation D. cell division Which option is correct and why?
The correct answer is: reproduction.
A
what is adrenaline a response to?
[ "earthquakes", "water", "magnetism", "threats", "Heart rate", "hormones", "threatened", "heat" ]
threats
Answer the following multiple-choice question. Question: what is adrenaline a response to? Options: A. earthquakes B. water C. magnetism D. threats E. Heart rate F. hormones G. threatened H. heat Which option is correct and why?
The correct answer is: threats.
D
How does water turn to ice?
[ "Adding air", "The bending of a ray of light", "Warm air moving into cold air", "Increasing heat energy", "It used to be covered by water", "evaporation", "Adding salt", "Reducing heat energy" ]
Reducing heat energy
Answer the following multiple-choice question. Question: How does water turn to ice? Options: A. Adding air B. The bending of a ray of light C. Warm air moving into cold air D. Increasing heat energy E. It used to be covered by water F. evaporation G. Adding salt H. Reducing heat energy Which option is correct and why?
The correct answer is: Reducing heat energy.
A
Which likely occurs in the digestive system?
[ "twinkies are converted to usable material", "air comes in and out", "twinkies are baked fresh", "plastic is found here" ]
twinkies are converted to usable material
Answer the following multiple-choice question. Question: Which likely occurs in the digestive system? Options: A. twinkies are converted to usable material B. air comes in and out C. twinkies are baked fresh D. plastic is found here Which option is correct and why?
The correct answer is: twinkies are converted to usable material.
A
Probability can be used to predict the chance of gametes and offspring having certain what?
[ "alleles", "molecules", "atoms", "particles" ]
alleles
Answer the following multiple-choice question. Question: Probability can be used to predict the chance of gametes and offspring having certain what? Options: A. alleles B. molecules C. atoms D. particles Which option is correct and why?
The correct answer is: alleles.
A
What do plants make to store extra glucose?
[ "fats", "sugars", "water", "starches" ]
starches
Answer the following multiple-choice question. Question: What do plants make to store extra glucose? Options: A. fats B. sugars C. water D. starches Which option is correct and why?
The correct answer is: starches.
D
What falls on the windward side extensive foreland thrust developments?
[ "birds", "rainfall", "weather", "planes", "wave in air", "alluvial", "Sediment", "precipitation" ]
precipitation
Answer the following multiple-choice question. Question: What falls on the windward side extensive foreland thrust developments? Options: A. birds B. rainfall C. weather D. planes E. wave in air F. alluvial G. Sediment H. precipitation Which option is correct and why?
The correct answer is: precipitation.
A
What is to blame for water’s boiling point (100°c) being higher than the boiling points of similar substances?
[ "electrode bonds", "helium bonds", "molecular shape", "hydrogen bonds" ]
hydrogen bonds
Answer the following multiple-choice question. Question: What is to blame for water’s boiling point (100°c) being higher than the boiling points of similar substances? Options: A. electrode bonds B. helium bonds C. molecular shape D. hydrogen bonds Which option is correct and why?
The correct answer is: hydrogen bonds.
D
A flower 's purpose
[ "protection", "photosynthesis", "it needs them", "reproduction", "circulatory system", "Plant reproduction", "camaflouge", "genetic diversity" ]
reproduction
Answer the following multiple-choice question. Question: A flower 's purpose Options: A. protection B. photosynthesis C. it needs them D. reproduction E. circulatory system F. Plant reproduction G. camaflouge H. genetic diversity Which option is correct and why?
The correct answer is: reproduction.
D
In genetics, what do you call characteristics that are passed from a parent to child?
[ "mutations", "similarities", "traits", "habits" ]
traits
Answer the following multiple-choice question. Question: In genetics, what do you call characteristics that are passed from a parent to child? Options: A. mutations B. similarities C. traits D. habits Which option is correct and why?
The correct answer is: traits.
C
The average number of individuals per unit of area or volume is referred to as a population's what?
[ "output", "diameter", "increase", "density" ]
density
Answer the following multiple-choice question. Question: The average number of individuals per unit of area or volume is referred to as a population's what? Options: A. output B. diameter C. increase D. density Which option is correct and why?
The correct answer is: density.
D
An allele is an alternative form of what structure?
[ "amino acid", "enzyme", "protein", "gene" ]
gene
Answer the following multiple-choice question. Question: An allele is an alternative form of what structure? Options: A. amino acid B. enzyme C. protein D. gene Which option is correct and why?
The correct answer is: gene.
D
What type of simple machine is a seesaw an example of?
[ "single", "lever", "steam", "power" ]
lever
Answer the following multiple-choice question. Question: What type of simple machine is a seesaw an example of? Options: A. single B. lever C. steam D. power Which option is correct and why?
The correct answer is: lever.
B
Besides depth soundings, what else are bathymetric maps made of?
[ "density measures", "sonar data", "solar data", "intensity data" ]
sonar data
Answer the following multiple-choice question. Question: Besides depth soundings, what else are bathymetric maps made of? Options: A. density measures B. sonar data C. solar data D. intensity data Which option is correct and why?
The correct answer is: sonar data.
B
What is used to catch prey by some birds?
[ "a bill", "fire", "nets", "cups" ]
a bill
Answer the following multiple-choice question. Question: What is used to catch prey by some birds? Options: A. a bill B. fire C. nets D. cups Which option is correct and why?
The correct answer is: a bill.
A
When it gets dark the earliest in California it is
[ "the time California is closest to the sun", "the time Australia is closest to the sun", "the time Europe is closest to the sun", "the time Mexico is closest to the sun" ]
the time Australia is closest to the sun
Answer the following multiple-choice question. Question: When it gets dark the earliest in California it is Options: A. the time California is closest to the sun B. the time Australia is closest to the sun C. the time Europe is closest to the sun D. the time Mexico is closest to the sun Which option is correct and why?
The correct answer is: the time Australia is closest to the sun.
B
The depth of the atmosphere is greatest where?
[ "the ionosphere", "under water", "the stratosphere", "sea level" ]
sea level
Answer the following multiple-choice question. Question: The depth of the atmosphere is greatest where? Options: A. the ionosphere B. under water C. the stratosphere D. sea level Which option is correct and why?
The correct answer is: sea level.
D
What is the unit used to measure voltage?
[ "volts", "ohm", "watt", "ampere" ]
volts
Answer the following multiple-choice question. Question: What is the unit used to measure voltage? Options: A. volts B. ohm C. watt D. ampere Which option is correct and why?
The correct answer is: volts.
A
What do corals secrete that builds up to become a coral reef?
[ "actuators", "tentacles", "exoskeletons", "saliva" ]
exoskeletons
Answer the following multiple-choice question. Question: What do corals secrete that builds up to become a coral reef? Options: A. actuators B. tentacles C. exoskeletons D. saliva Which option is correct and why?
The correct answer is: exoskeletons.
C
What goes to a place that has a negative impact on the environment?
[ "garbage trucks", "trains", "mail trucks", "motorcycles" ]
garbage trucks
Answer the following multiple-choice question. Question: What goes to a place that has a negative impact on the environment? Options: A. garbage trucks B. trains C. mail trucks D. motorcycles Which option is correct and why?
The correct answer is: garbage trucks.
A
Plant population would fail to maintain it's size if
[ "fertilizer is applied", "gets more sun", "H2O depletes", "grows" ]
H2O depletes
Answer the following multiple-choice question. Question: Plant population would fail to maintain it's size if Options: A. fertilizer is applied B. gets more sun C. H2O depletes D. grows Which option is correct and why?
The correct answer is: H2O depletes.
C
What can uneven heating of the earth's surface cause?
[ "Wealth creation", "Damage to buildings", "Damage to moon", "forest is destroyed", "Greenhouse gases", "Plant growth is reduced", "Damage to sun", "Physical weathering" ]
Damage to buildings
Answer the following multiple-choice question. Question: What can uneven heating of the earth's surface cause? Options: A. Wealth creation B. Damage to buildings C. Damage to moon D. forest is destroyed E. Greenhouse gases F. Plant growth is reduced G. Damage to sun H. Physical weathering Which option is correct and why?
The correct answer is: Damage to buildings.
B
Where would a greenhouse best be used?
[ "Bahamas", "Nebraska", "Florida", "Mexico" ]
Nebraska
Answer the following multiple-choice question. Question: Where would a greenhouse best be used? Options: A. Bahamas B. Nebraska C. Florida D. Mexico Which option is correct and why?
The correct answer is: Nebraska.
B
What is a relationship between living things that depend on the same resources?
[ "parasitic", "contention", "competition", "symbiotic" ]
competition
Answer the following multiple-choice question. Question: What is a relationship between living things that depend on the same resources? Options: A. parasitic B. contention C. competition D. symbiotic Which option is correct and why?
The correct answer is: competition.
C
What is produced when a base is dissolved in water?
[ "alkaline ions", "ingredient ions", "hydroxide ions", "synthesis ions" ]
hydroxide ions
Answer the following multiple-choice question. Question: What is produced when a base is dissolved in water? Options: A. alkaline ions B. ingredient ions C. hydroxide ions D. synthesis ions Which option is correct and why?
The correct answer is: hydroxide ions.
C
The molecule pictured above is thyroxine, a compound produced by which gland?
[ "thyroid", "gallbladder", "stomach", "kidney" ]
thyroid
Answer the following multiple-choice question. Question: The molecule pictured above is thyroxine, a compound produced by which gland? Options: A. thyroid B. gallbladder C. stomach D. kidney Which option is correct and why?
The correct answer is: thyroid.
A
Language can be learned through
[ "play", "osmosis", "instincts", "years", "Birds", "a path", "sent", "nerves" ]
play
Answer the following multiple-choice question. Question: Language can be learned through Options: A. play B. osmosis C. instincts D. years E. Birds F. a path G. sent H. nerves Which option is correct and why?
The correct answer is: play.
A
If I wanted to get energy after a hard work out I could do what?
[ "Go bike riding", "Go swimming", "Consume bread", "Run again" ]
Consume bread
Answer the following multiple-choice question. Question: If I wanted to get energy after a hard work out I could do what? Options: A. Go bike riding B. Go swimming C. Consume bread D. Run again Which option is correct and why?
The correct answer is: Consume bread.
C
What is the term for disease-causing agents, such as bacteria and viruses?
[ "parasites", "vaccines", "spores", "pathogens" ]
pathogens
Answer the following multiple-choice question. Question: What is the term for disease-causing agents, such as bacteria and viruses? Options: A. parasites B. vaccines C. spores D. pathogens Which option is correct and why?
The correct answer is: pathogens.
D
What do glands in the skin produce to cool down the body?
[ "sweat", "mucus", "saliva", "lactic acid" ]
sweat
Answer the following multiple-choice question. Question: What do glands in the skin produce to cool down the body? Options: A. sweat B. mucus C. saliva D. lactic acid Which option is correct and why?
The correct answer is: sweat.
A
What can an animal do to cool themselves down?
[ "preventing heat transfer", "Cover with a blanket", "To keep their body heat.", "converting electricity to heat", "evaporation", "Go into sun", "Stand near a fire", "Decrease bodily water" ]
Decrease bodily water
Answer the following multiple-choice question. Question: What can an animal do to cool themselves down? Options: A. preventing heat transfer B. Cover with a blanket C. To keep their body heat. D. converting electricity to heat E. evaporation F. Go into sun G. Stand near a fire H. Decrease bodily water Which option is correct and why?
The correct answer is: Decrease bodily water.
A
Solid materials used to produce electricity by burning in what need to be transported firs
[ "Conifers", "animals", "it needs them", "humans", "heat energy", "important habitats", "power stations", "batteries" ]
power stations
Answer the following multiple-choice question. Question: Solid materials used to produce electricity by burning in what need to be transported firs Options: A. Conifers B. animals C. it needs them D. humans E. heat energy F. important habitats G. power stations H. batteries Which option is correct and why?
The correct answer is: power stations.
A
Anorexia can be caused by
[ "parasites", "contamination", "cigarettes", "Leptospirosis", "Smoking", "Pesticides", "heat or cold", "acetic acid" ]
parasites
Answer the following multiple-choice question. Question: Anorexia can be caused by Options: A. parasites B. contamination C. cigarettes D. Leptospirosis E. Smoking F. Pesticides G. heat or cold H. acetic acid Which option is correct and why?
The correct answer is: parasites.
A
What stimulates the production of milk by the mammary glands following childbirth?
[ "melanin", "progesterone", "prolactin", "estrogen" ]
prolactin
Answer the following multiple-choice question. Question: What stimulates the production of milk by the mammary glands following childbirth? Options: A. melanin B. progesterone C. prolactin D. estrogen Which option is correct and why?
The correct answer is: prolactin.
C
What can prevent 90 percent of the body's heat loss?
[ "Masks", "fur", "coats", "bald head", "increase body fat", "sweaters", "skin", "hair" ]
hair
Answer the following multiple-choice question. Question: What can prevent 90 percent of the body's heat loss? Options: A. Masks B. fur C. coats D. bald head E. increase body fat F. sweaters G. skin H. hair Which option is correct and why?
The correct answer is: hair.
A
Which of the following would be an example of tool use in the animal kingdom?
[ "a wolf using its sense of smell to track down prey", "a crow displacing water with rocks to get good", "a giant whale filtering plankton from water", "An anteater using its long tongue to catch ants" ]
a crow displacing water with rocks to get good
Answer the following multiple-choice question. Question: Which of the following would be an example of tool use in the animal kingdom? Options: A. a wolf using its sense of smell to track down prey B. a crow displacing water with rocks to get good C. a giant whale filtering plankton from water D. An anteater using its long tongue to catch ants Which option is correct and why?
The correct answer is: a crow displacing water with rocks to get good.
B
Plant-like protists are autotrophs capable of what process?
[ "microevolution", "regeneration", "sexual reproduction", "photosynthesis" ]
photosynthesis
Answer the following multiple-choice question. Question: Plant-like protists are autotrophs capable of what process? Options: A. microevolution B. regeneration C. sexual reproduction D. photosynthesis Which option is correct and why?
The correct answer is: photosynthesis.
D
what causes brain atrophy?
[ "Smoking", "sodium", "Dehydration", "sweating", "death", "birth", "Veins and arteries.", "lack of oxygen" ]
lack of oxygen
Answer the following multiple-choice question. Question: what causes brain atrophy? Options: A. Smoking B. sodium C. Dehydration D. sweating E. death F. birth G. Veins and arteries. H. lack of oxygen Which option is correct and why?
The correct answer is: lack of oxygen.
A
During which phase is the moon more than half lit but not full?
[ "gibbous phase", "new", "crescent", "waxing" ]
gibbous phase
Answer the following multiple-choice question. Question: During which phase is the moon more than half lit but not full? Options: A. gibbous phase B. new C. crescent D. waxing Which option is correct and why?
The correct answer is: gibbous phase.
A
Name the two types of nucleic acids.
[ "lysine and methionine", "dna ( trigraph acid ) and rna ( ribonucleic acid )", "dna (deoxyribonucleic acid) and rna (ribonucleic acid)", "isoleucin and leucine" ]
dna (deoxyribonucleic acid) and rna (ribonucleic acid)
Answer the following multiple-choice question. Question: Name the two types of nucleic acids. Options: A. lysine and methionine B. dna ( trigraph acid ) and rna ( ribonucleic acid ) C. dna (deoxyribonucleic acid) and rna (ribonucleic acid) D. isoleucin and leucine Which option is correct and why?
The correct answer is: dna (deoxyribonucleic acid) and rna (ribonucleic acid).
C
Receptors for what chemical messengers recognize molecules with specific shapes and side groups, and respond only to those that are recognized?
[ "acids", "hormones", "enzymes", "chromosomes" ]
hormones
Answer the following multiple-choice question. Question: Receptors for what chemical messengers recognize molecules with specific shapes and side groups, and respond only to those that are recognized? Options: A. acids B. hormones C. enzymes D. chromosomes Which option is correct and why?
The correct answer is: hormones.
B
Oceans cover 70% of the surface of what?
[ "the moon", "the sun", "wet planet", "cities" ]
wet planet
Answer the following multiple-choice question. Question: Oceans cover 70% of the surface of what? Options: A. the moon B. the sun C. wet planet D. cities Which option is correct and why?
The correct answer is: wet planet.
C
What can cause animals to leave an environment?
[ "light rain", "good weather", "drought", "mines", "storms", "fires", "wind", "gentle breezes" ]
fires
Answer the following multiple-choice question. Question: What can cause animals to leave an environment? Options: A. light rain B. good weather C. drought D. mines E. storms F. fires G. wind H. gentle breezes Which option is correct and why?
The correct answer is: fires.
A
The best place to get vitamin D is
[ "orange juice", "a hamburger", "popcorn", "a cows utter" ]
a cows utter
Answer the following multiple-choice question. Question: The best place to get vitamin D is Options: A. orange juice B. a hamburger C. popcorn D. a cows utter Which option is correct and why?
The correct answer is: a cows utter.
D
The voltage of a voltaic cell can be determined by the reduction potentials of what?
[ "full reactions", "old reactions", "half reactions", "thermal reactions" ]
half reactions
Answer the following multiple-choice question. Question: The voltage of a voltaic cell can be determined by the reduction potentials of what? Options: A. full reactions B. old reactions C. half reactions D. thermal reactions Which option is correct and why?
The correct answer is: half reactions.
C
Mixture of metals is called what?
[ "fusion", "alloy", "compound", "amalgm" ]
alloy
Answer the following multiple-choice question. Question: Mixture of metals is called what? Options: A. fusion B. alloy C. compound D. amalgm Which option is correct and why?
The correct answer is: alloy.
B