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What is the organ in which gas exchanges take place between blood and air?
[ "kidney", "heart", "skin", "lungs" ]
lungs
Answer the following multiple-choice question. Question: What is the organ in which gas exchanges take place between blood and air? Options: A. kidney B. heart C. skin D. lungs Which option is correct and why?
The correct answer is: lungs.
Red blood cells don't have a nucleus. this allows them to do what?
[ "carry more oxygen", "be redder", "move faster", "heal faster" ]
carry more oxygen
Answer the following multiple-choice question. Question: Red blood cells don't have a nucleus. this allows them to do what? Options: A. carry more oxygen B. be redder C. move faster D. heal faster Which option is correct and why?
The correct answer is: carry more oxygen.
What is the spreading of white light into its full spectrum of wavelengths called?
[ "condensation", "radiate", "saturation", "dispersion" ]
dispersion
Answer the following multiple-choice question. Question: What is the spreading of white light into its full spectrum of wavelengths called? Options: A. condensation B. radiate C. saturation D. dispersion Which option is correct and why?
The correct answer is: dispersion.
Worms such as the familiar earthworm are what?
[ "parasites", "root growth", "segmented", "homogenous", "Loose", "allow growth", "fertile", "more abundant" ]
segmented
Answer the following multiple-choice question. Question: Worms such as the familiar earthworm are what? Options: A. parasites B. root growth C. segmented D. homogenous E. Loose F. allow growth G. fertile H. more abundant Which option is correct and why?
The correct answer is: segmented.
What cannot reproduce by itself?
[ "Acids", "all plants", "anemia", "smallpox", "cigarettes", "all corals", "all bacteria", "acetic acid" ]
smallpox
Answer the following multiple-choice question. Question: What cannot reproduce by itself? Options: A. Acids B. all plants C. anemia D. smallpox E. cigarettes F. all corals G. all bacteria H. acetic acid Which option is correct and why?
The correct answer is: smallpox.
What kind of animal doesn't have a respiratory or excretory system?
[ "a fish", "bears", "ant", "whale", "humans", "starfish", "mammals", "llama" ]
starfish
Answer the following multiple-choice question. Question: What kind of animal doesn't have a respiratory or excretory system? Options: A. a fish B. bears C. ant D. whale E. humans F. starfish G. mammals H. llama Which option is correct and why?
The correct answer is: starfish.
Uncontrolled cell growth can lead to tumors and what disease?
[ "kidney failure", "cirrhosis", "cancer", "vascular disease" ]
cancer
Answer the following multiple-choice question. Question: Uncontrolled cell growth can lead to tumors and what disease? Options: A. kidney failure B. cirrhosis C. cancer D. vascular disease Which option is correct and why?
The correct answer is: cancer.
Isotopes are named for their number of ______ plus neutrons?
[ "protons", "atoms", "electrons", "nuclei" ]
protons
Answer the following multiple-choice question. Question: Isotopes are named for their number of ______ plus neutrons? Options: A. protons B. atoms C. electrons D. nuclei Which option is correct and why?
The correct answer is: protons.
A creature is able to receive nutriment throughout their limbs due to
[ "arteries", "jeans", "oranges", "arms" ]
arteries
Answer the following multiple-choice question. Question: A creature is able to receive nutriment throughout their limbs due to Options: A. arteries B. jeans C. oranges D. arms Which option is correct and why?
The correct answer is: arteries.
The monosaccharide glucose is broken down through a series of enzyme-catalyzed reactions known as what?
[ "glycolysis", "photosynthesis", "Respiration", "Digestion" ]
glycolysis
Answer the following multiple-choice question. Question: The monosaccharide glucose is broken down through a series of enzyme-catalyzed reactions known as what? Options: A. glycolysis B. photosynthesis C. Respiration D. Digestion Which option is correct and why?
The correct answer is: glycolysis.
The creation of gypsum from anhydrite is an example of what?
[ "chemical change", "volcanic activity", "biological change", "mechanical change" ]
chemical change
Answer the following multiple-choice question. Question: The creation of gypsum from anhydrite is an example of what? Options: A. chemical change B. volcanic activity C. biological change D. mechanical change Which option is correct and why?
The correct answer is: chemical change.
Water easily flows through what?
[ "streams.", "streams", "coral reefs", "sandy soils", "aqueous solution", "swamp vegetation", "calcite", "Sediment" ]
sandy soils
Answer the following multiple-choice question. Question: Water easily flows through what? Options: A. streams. B. streams C. coral reefs D. sandy soils E. aqueous solution F. swamp vegetation G. calcite H. Sediment Which option is correct and why?
The correct answer is: sandy soils.
Scandinavian eye color testifies to
[ "genes have little effect at all on eye color", "dominant alleles are more common there", "recessive genes being more common there", "Thor's Hammer causes it to be so" ]
recessive genes being more common there
Answer the following multiple-choice question. Question: Scandinavian eye color testifies to Options: A. genes have little effect at all on eye color B. dominant alleles are more common there C. recessive genes being more common there D. Thor's Hammer causes it to be so Which option is correct and why?
The correct answer is: recessive genes being more common there.
What causes rocks, dirt, and earth to combine?
[ "Time", "Weathering", "Air", "heat energy", "forces", "friction", "rainfall", "Animals" ]
Weathering
Answer the following multiple-choice question. Question: What causes rocks, dirt, and earth to combine? Options: A. Time B. Weathering C. Air D. heat energy E. forces F. friction G. rainfall H. Animals Which option is correct and why?
The correct answer is: Weathering.
What do we call water that has been used for cleaning, washing, flushing, or manufacturing?
[ "sewage", "wastewater", "groundwater", "Grey water" ]
wastewater
Answer the following multiple-choice question. Question: What do we call water that has been used for cleaning, washing, flushing, or manufacturing? Options: A. sewage B. wastewater C. groundwater D. Grey water Which option is correct and why?
The correct answer is: wastewater.
Two water molecules contain 4 hydrogen atoms and how many oxygen atoms?
[ "1", "4", "6", "2" ]
2
Answer the following multiple-choice question. Question: Two water molecules contain 4 hydrogen atoms and how many oxygen atoms? Options: A. 1 B. 4 C. 6 D. 2 Which option is correct and why?
The correct answer is: 2.
What kingdom of organisms constitutes up to 20 percent of all living things on earth in mass?
[ "protists", "archaeans", "sporozoans", "vertebrates" ]
archaeans
Answer the following multiple-choice question. Question: What kingdom of organisms constitutes up to 20 percent of all living things on earth in mass? Options: A. protists B. archaeans C. sporozoans D. vertebrates Which option is correct and why?
The correct answer is: archaeans.
null
null
null
null
null
Evaporation can be used for separating a solute from
[ "soil", "salts", "Water", "vapors", "liquid", "gas", "compounds", "lipids" ]
Water
Answer the following multiple-choice question. Question: Evaporation can be used for separating a solute from Options: A. soil B. salts C. Water D. vapors E. liquid F. gas G. compounds H. lipids Which option is correct and why?
The correct answer is: Water.
The body measures sensor input to the skin such as what?
[ "Heart rate", "Light", "kind look", "lound noises", "hormones", "firm hugs", "laughter", "Temperature" ]
firm hugs
Answer the following multiple-choice question. Question: The body measures sensor input to the skin such as what? Options: A. Heart rate B. Light C. kind look D. lound noises E. hormones F. firm hugs G. laughter H. Temperature Which option is correct and why?
The correct answer is: firm hugs.
What is another environmental benefit of conserving resources?
[ "warmer temperatures", "less trash", "more jobs", "lower prices" ]
less trash
Answer the following multiple-choice question. Question: What is another environmental benefit of conserving resources? Options: A. warmer temperatures B. less trash C. more jobs D. lower prices Which option is correct and why?
The correct answer is: less trash.
Where do most ecosystems get their energy from?
[ "heat", "sun", "earth", "water" ]
sun
Answer the following multiple-choice question. Question: Where do most ecosystems get their energy from? Options: A. heat B. sun C. earth D. water Which option is correct and why?
The correct answer is: sun.
Constantly going through some form of growth and repair is a characteristic of all what?
[ "viruses", "mass", "living things", "bacteria" ]
living things
Answer the following multiple-choice question. Question: Constantly going through some form of growth and repair is a characteristic of all what? Options: A. viruses B. mass C. living things D. bacteria Which option is correct and why?
The correct answer is: living things.
What have permeable skin that easily absorbs substances from the environment?
[ "crocodiles", "ferns", "animals", "humans", "toads", "viruses", "a fish", "bats" ]
toads
Answer the following multiple-choice question. Question: What have permeable skin that easily absorbs substances from the environment? Options: A. crocodiles B. ferns C. animals D. humans E. toads F. viruses G. a fish H. bats Which option is correct and why?
The correct answer is: toads.
How are bacteria identified and classified?
[ "by there movement", "by their shape", "by there cell count", "by their color" ]
by their shape
Answer the following multiple-choice question. Question: How are bacteria identified and classified? Options: A. by there movement B. by their shape C. by there cell count D. by their color Which option is correct and why?
The correct answer is: by their shape.
dry wood easily
[ "grows", "freezes", "shrinks", "incinerates" ]
incinerates
Answer the following multiple-choice question. Question: dry wood easily Options: A. grows B. freezes C. shrinks D. incinerates Which option is correct and why?
The correct answer is: incinerates.
What stimulates the central nervous system?
[ "exercise", "blood", "rice", "coffee", "A drug.", "a chime", "ice", "sweating" ]
coffee
Answer the following multiple-choice question. Question: What stimulates the central nervous system? Options: A. exercise B. blood C. rice D. coffee E. A drug. F. a chime G. ice H. sweating Which option is correct and why?
The correct answer is: coffee.
Aldehydes, ketones, carboxylic acids, esters, and ethers all have functional groups containing what element?
[ "silicon", "oxygen", "methane", "carbon" ]
oxygen
Answer the following multiple-choice question. Question: Aldehydes, ketones, carboxylic acids, esters, and ethers all have functional groups containing what element? Options: A. silicon B. oxygen C. methane D. carbon Which option is correct and why?
The correct answer is: oxygen.
Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes?
[ "acid rain", "ozone rain", "dioxide rain", "oil rain" ]
acid rain
Answer the following multiple-choice question. Question: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes? Options: A. acid rain B. ozone rain C. dioxide rain D. oil rain Which option is correct and why?
The correct answer is: acid rain.
All dogs require what to move?
[ "dog treats", "speed", "air", "barking", "Energy.", "energy", "feet", "a leash" ]
energy
Answer the following multiple-choice question. Question: All dogs require what to move? Options: A. dog treats B. speed C. air D. barking E. Energy. F. energy G. feet H. a leash Which option is correct and why?
The correct answer is: energy.
What is used for cooling detectors of infrared telescopes?
[ "material nitrogen", "liquid nitrogen", "carbon dioxide", "hand nitrogen" ]
liquid nitrogen
Answer the following multiple-choice question. Question: What is used for cooling detectors of infrared telescopes? Options: A. material nitrogen B. liquid nitrogen C. carbon dioxide D. hand nitrogen Which option is correct and why?
The correct answer is: liquid nitrogen.
Tungsten filaments sealed in a glass bulb are used for what in the dark?
[ "photons", "energy", "seeing", "stay warm", "sleeping", "talking", "communicating", "heat" ]
seeing
Answer the following multiple-choice question. Question: Tungsten filaments sealed in a glass bulb are used for what in the dark? Options: A. photons B. energy C. seeing D. stay warm E. sleeping F. talking G. communicating H. heat Which option is correct and why?
The correct answer is: seeing.
What bond is the force of attraction that holds together oppositely charged ions?
[ "magnetic", "harmonic", "iconic", "ionic" ]
ionic
Answer the following multiple-choice question. Question: What bond is the force of attraction that holds together oppositely charged ions? Options: A. magnetic B. harmonic C. iconic D. ionic Which option is correct and why?
The correct answer is: ionic.
Continuous-flow reactors are chemical reaction vessels in which the what are mixed and allowed to react as they flow along a tube?
[ "reactants", "generators", "reactives", "propellants" ]
reactants
Answer the following multiple-choice question. Question: Continuous-flow reactors are chemical reaction vessels in which the what are mixed and allowed to react as they flow along a tube? Options: A. reactants B. generators C. reactives D. propellants Which option is correct and why?
The correct answer is: reactants.
Millipedes lack what?
[ "epidermal", "segmented body", "leg pairs", "a cuticle", "a vertebral column", "diplosomites", "Chlorophyll", "biological diversity" ]
a vertebral column
Answer the following multiple-choice question. Question: Millipedes lack what? Options: A. epidermal B. segmented body C. leg pairs D. a cuticle E. a vertebral column F. diplosomites G. Chlorophyll H. biological diversity Which option is correct and why?
The correct answer is: a vertebral column.
Kidney stones can form anywhere in what system?
[ "urinary", "intestinal", "digestive", "respiratory" ]
urinary
Answer the following multiple-choice question. Question: Kidney stones can form anywhere in what system? Options: A. urinary B. intestinal C. digestive D. respiratory Which option is correct and why?
The correct answer is: urinary.
What is the term for electric current that keeps reversing direction?
[ "magnetic current", "direct current", "AC/DC", "alternating current" ]
alternating current
Answer the following multiple-choice question. Question: What is the term for electric current that keeps reversing direction? Options: A. magnetic current B. direct current C. AC/DC D. alternating current Which option is correct and why?
The correct answer is: alternating current.
What do nonvascular plants reproduce with?
[ "vascular plants", "spores", "toxins", "photosynthesis" ]
spores
Answer the following multiple-choice question. Question: What do nonvascular plants reproduce with? Options: A. vascular plants B. spores C. toxins D. photosynthesis Which option is correct and why?
The correct answer is: spores.
Parents genes will determine the rabbits
[ "mate", "food preferences", "fur color", "habitat location" ]
fur color
Answer the following multiple-choice question. Question: Parents genes will determine the rabbits Options: A. mate B. food preferences C. fur color D. habitat location Which option is correct and why?
The correct answer is: fur color.
What type of molecules are secreted by the cell in local signaling?
[ "messenger molecules", "sleeping molecules", "word molecules", "negaitive molecules" ]
messenger molecules
Answer the following multiple-choice question. Question: What type of molecules are secreted by the cell in local signaling? Options: A. messenger molecules B. sleeping molecules C. word molecules D. negaitive molecules Which option is correct and why?
The correct answer is: messenger molecules.
What does chemical weathering cause iron to do?
[ "rust", "vomit", "reacts", "bruise", "divide", "expand", "harm", "burned" ]
rust
Answer the following multiple-choice question. Question: What does chemical weathering cause iron to do? Options: A. rust B. vomit C. reacts D. bruise E. divide F. expand G. harm H. burned Which option is correct and why?
The correct answer is: rust.
What is burned to produce heat?
[ "Oak", "Gold", "Spruce", "cellulose", "Conifers", "bamboo", "Plastic", "Aluminum" ]
Spruce
Answer the following multiple-choice question. Question: What is burned to produce heat? Options: A. Oak B. Gold C. Spruce D. cellulose E. Conifers F. bamboo G. Plastic H. Aluminum Which option is correct and why?
The correct answer is: Spruce.
What can make a river deepen and widen?
[ "birds", "sunlight", "Sediment", "wind and water", "rainfall", "flooding", "weeds", "arteries" ]
wind and water
Answer the following multiple-choice question. Question: What can make a river deepen and widen? Options: A. birds B. sunlight C. Sediment D. wind and water E. rainfall F. flooding G. weeds H. arteries Which option is correct and why?
The correct answer is: wind and water.
Mammals can also generate little bursts of heat using natural body reflexes to what?
[ "the environment", "heating liquids", "warm rooms", "comfort", "cold water", "survive", "Animal survival", "tepid water" ]
cold water
Answer the following multiple-choice question. Question: Mammals can also generate little bursts of heat using natural body reflexes to what? Options: A. the environment B. heating liquids C. warm rooms D. comfort E. cold water F. survive G. Animal survival H. tepid water Which option is correct and why?
The correct answer is: cold water.
Within a group, the ionization energy decreases as the size of the atom gets what?
[ "brighter", "larger", "smaller", "lighter" ]
larger
Answer the following multiple-choice question. Question: Within a group, the ionization energy decreases as the size of the atom gets what? Options: A. brighter B. larger C. smaller D. lighter Which option is correct and why?
The correct answer is: larger.
The peripheral nervous system consists of all the nerves that are found outside what?
[ "central nervous system", "somatic nervous system", "large nervous system", "autonomic nerous system" ]
central nervous system
Answer the following multiple-choice question. Question: The peripheral nervous system consists of all the nerves that are found outside what? Options: A. central nervous system B. somatic nervous system C. large nervous system D. autonomic nerous system Which option is correct and why?
The correct answer is: central nervous system.
Unlike bryophyte and fern spores (which are haploid cells dependent on moisture for rapid development of gametophytes), seeds contain a diploid embryo that will germinate into what?
[ "ovary", "sporophyte", "gametophyte", "sperm" ]
sporophyte
Answer the following multiple-choice question. Question: Unlike bryophyte and fern spores (which are haploid cells dependent on moisture for rapid development of gametophytes), seeds contain a diploid embryo that will germinate into what? Options: A. ovary B. sporophyte C. gametophyte D. sperm Which option is correct and why?
The correct answer is: sporophyte.
Soil nutrition can be what?
[ "positive", "more abundant", "Energy", "complex", "recovery", "store", "extracted", "allow growth" ]
extracted
Answer the following multiple-choice question. Question: Soil nutrition can be what? Options: A. positive B. more abundant C. Energy D. complex E. recovery F. store G. extracted H. allow growth Which option is correct and why?
The correct answer is: extracted.
What is another name for trisomy 21?
[ "Fragile X", "down syndrome", "cystic fibrosis", "Tay-Sachs Disease" ]
down syndrome
Answer the following multiple-choice question. Question: What is another name for trisomy 21? Options: A. Fragile X B. down syndrome C. cystic fibrosis D. Tay-Sachs Disease Which option is correct and why?
The correct answer is: down syndrome.
In a drought, a resource that will be lacking is
[ "soil", "land", "droplets", "cheese" ]
droplets
Answer the following multiple-choice question. Question: In a drought, a resource that will be lacking is Options: A. soil B. land C. droplets D. cheese Which option is correct and why?
The correct answer is: droplets.
Which organ's diseases include kidney stones, infections, and kidney failure due to diabetes?
[ "lungs", "pancreas", "kidney", "heart" ]
kidney
Answer the following multiple-choice question. Question: Which organ's diseases include kidney stones, infections, and kidney failure due to diabetes? Options: A. lungs B. pancreas C. kidney D. heart Which option is correct and why?
The correct answer is: kidney.
When any two object strike with each other, the molecules of the outer of the two objects coming in contact could
[ "rot", "quake", "smoke", "freeze" ]
quake
Answer the following multiple-choice question. Question: When any two object strike with each other, the molecules of the outer of the two objects coming in contact could Options: A. rot B. quake C. smoke D. freeze Which option is correct and why?
The correct answer is: quake.
When a plant is watered, spraying water on leaves is less useful than
[ "spritzing the stem of the plant", "putting the plant in the rain", "using a sprinkler system", "pouring water on soil" ]
pouring water on soil
Answer the following multiple-choice question. Question: When a plant is watered, spraying water on leaves is less useful than Options: A. spritzing the stem of the plant B. putting the plant in the rain C. using a sprinkler system D. pouring water on soil Which option is correct and why?
The correct answer is: pouring water on soil.
Metabolism includes both anabolic and which other reaction?
[ "enzymatic", "biogenic", "organic", "catabolic" ]
catabolic
Answer the following multiple-choice question. Question: Metabolism includes both anabolic and which other reaction? Options: A. enzymatic B. biogenic C. organic D. catabolic Which option is correct and why?
The correct answer is: catabolic.
A flamingo may be able to run across a pond easier than a human, sparrow or a cat because it has
[ "webbed feet", "a tail", "wings", "a beak" ]
webbed feet
Answer the following multiple-choice question. Question: A flamingo may be able to run across a pond easier than a human, sparrow or a cat because it has Options: A. webbed feet B. a tail C. wings D. a beak Which option is correct and why?
The correct answer is: webbed feet.
What happens when people flow into or out of a population?
[ "genetic morphing", "death", "gene flow", "movement", "generic flow", "interact", "competition", "gene expression" ]
gene flow
Answer the following multiple-choice question. Question: What happens when people flow into or out of a population? Options: A. genetic morphing B. death C. gene flow D. movement E. generic flow F. interact G. competition H. gene expression Which option is correct and why?
The correct answer is: gene flow.
What is composed of two strands of nucleotides in a double-helical structure?
[ "molecule", "RNA", "bacteria", "dna" ]
dna
Answer the following multiple-choice question. Question: What is composed of two strands of nucleotides in a double-helical structure? Options: A. molecule B. RNA C. bacteria D. dna Which option is correct and why?
The correct answer is: dna.
What is the most abundant element in the universe?
[ "helium", "hydrogen", "fluoride", "oxygen" ]
hydrogen
Answer the following multiple-choice question. Question: What is the most abundant element in the universe? Options: A. helium B. hydrogen C. fluoride D. oxygen Which option is correct and why?
The correct answer is: hydrogen.
What do we call the energy of motion?
[ "kinetic energy", "electromagnetic energy", "harmonic energy", "binary energy" ]
kinetic energy
Answer the following multiple-choice question. Question: What do we call the energy of motion? Options: A. kinetic energy B. electromagnetic energy C. harmonic energy D. binary energy Which option is correct and why?
The correct answer is: kinetic energy.
Great lakes may have come to be thanks to
[ "many visitors", "ice pillars", "large mice", "snow clouds" ]
ice pillars
Answer the following multiple-choice question. Question: Great lakes may have come to be thanks to Options: A. many visitors B. ice pillars C. large mice D. snow clouds Which option is correct and why?
The correct answer is: ice pillars.
Most crustaceans have separate sexes, so they reproduce sexually using what?
[ "asexual reproduction", "eggs and sperm", "pod and eggs", "eggs and pod" ]
eggs and sperm
Answer the following multiple-choice question. Question: Most crustaceans have separate sexes, so they reproduce sexually using what? Options: A. asexual reproduction B. eggs and sperm C. pod and eggs D. eggs and pod Which option is correct and why?
The correct answer is: eggs and sperm.
Which structure includes sugar-phosphate "backbones", composed of alternating phosphate groups and deoxyribose sugars, and nitrogenous bases?
[ "dna triple helix", "molecule double helix", "mulecular triplex", "dna double helix" ]
dna double helix
Answer the following multiple-choice question. Question: Which structure includes sugar-phosphate "backbones", composed of alternating phosphate groups and deoxyribose sugars, and nitrogenous bases? Options: A. dna triple helix B. molecule double helix C. mulecular triplex D. dna double helix Which option is correct and why?
The correct answer is: dna double helix.
To prepare hamburgers and hot dogs for eating you need
[ "glitter", "a firepit", "snowmen", "arsenic" ]
a firepit
Answer the following multiple-choice question. Question: To prepare hamburgers and hot dogs for eating you need Options: A. glitter B. a firepit C. snowmen D. arsenic Which option is correct and why?
The correct answer is: a firepit.
What kind of bonds are there between carbon atoms in saturated fatty acids?
[ "electrical", "single", "double", "chemical" ]
single
Answer the following multiple-choice question. Question: What kind of bonds are there between carbon atoms in saturated fatty acids? Options: A. electrical B. single C. double D. chemical Which option is correct and why?
The correct answer is: single.
What converts electrical energy into light energy when it is turned on?
[ "Something found in a traffic signal", "deoxyribonucleic acid", "Something found in a hand mixer", "Something found in a power strip", "Something found in a hair dryer", "polymers of nucleotides", "a hemisphere is tilted away from the sun", "an electron microscope" ]
Something found in a traffic signal
Answer the following multiple-choice question. Question: What converts electrical energy into light energy when it is turned on? Options: A. Something found in a traffic signal B. deoxyribonucleic acid C. Something found in a hand mixer D. Something found in a power strip E. Something found in a hair dryer F. polymers of nucleotides G. a hemisphere is tilted away from the sun H. an electron microscope Which option is correct and why?
The correct answer is: Something found in a traffic signal.
What is the term for a symbiotic relationship in which one species benefits while the other species is not affected?
[ "commensalism", "parasitism", "mutualism", "pollenation" ]
commensalism
Answer the following multiple-choice question. Question: What is the term for a symbiotic relationship in which one species benefits while the other species is not affected? Options: A. commensalism B. parasitism C. mutualism D. pollenation Which option is correct and why?
The correct answer is: commensalism.
Where is most digestion completed?
[ "the stomach", "the cavity", "the duodenum", "the esophagus" ]
the duodenum
Answer the following multiple-choice question. Question: Where is most digestion completed? Options: A. the stomach B. the cavity C. the duodenum D. the esophagus Which option is correct and why?
The correct answer is: the duodenum.
What eat other animals?
[ "herbivores", "bacteria", "flesh eaters", "giraffes" ]
flesh eaters
Answer the following multiple-choice question. Question: What eat other animals? Options: A. herbivores B. bacteria C. flesh eaters D. giraffes Which option is correct and why?
The correct answer is: flesh eaters.
What type of symmetry does an octopus have?
[ "bilateral", "quadrilateral", "essential", "internal" ]
bilateral
Answer the following multiple-choice question. Question: What type of symmetry does an octopus have? Options: A. bilateral B. quadrilateral C. essential D. internal Which option is correct and why?
The correct answer is: bilateral.
What is the name of the fungi that are ubiquitous in lakes and soil?
[ "sporozoans", "chytrids", "zygomycota", "eomycota" ]
chytrids
Answer the following multiple-choice question. Question: What is the name of the fungi that are ubiquitous in lakes and soil? Options: A. sporozoans B. chytrids C. zygomycota D. eomycota Which option is correct and why?
The correct answer is: chytrids.
What will be the effect to an organism if its homeostasis is not maintained?
[ "death or disease", "healthy mental state", "slow aging", "weight regulation" ]
death or disease
Answer the following multiple-choice question. Question: What will be the effect to an organism if its homeostasis is not maintained? Options: A. death or disease B. healthy mental state C. slow aging D. weight regulation Which option is correct and why?
The correct answer is: death or disease.
Pesticides are used on a lot of crops, so it is best to wash them before consumption in order to avoid
[ "nothing", "falling ill", "flying", "Floating" ]
falling ill
Answer the following multiple-choice question. Question: Pesticides are used on a lot of crops, so it is best to wash them before consumption in order to avoid Options: A. nothing B. falling ill C. flying D. Floating Which option is correct and why?
The correct answer is: falling ill.
A person notes that the moon goes through various phases and eventually repeats these phases over the course of
[ "every other new month", "about six more days", "just over a month", "just under a month" ]
just under a month
Answer the following multiple-choice question. Question: A person notes that the moon goes through various phases and eventually repeats these phases over the course of Options: A. every other new month B. about six more days C. just over a month D. just under a month Which option is correct and why?
The correct answer is: just under a month.
What increases the chances of someone inheriting a mitochondrial disease?
[ "presence of defect transgenic and undefected mtdna", "presence of defect ornithopods and undefected mtdna", "presence of defect mtdna and undefected mtdna", "presence of defect transgenic and defect mtdna" ]
presence of defect mtdna and undefected mtdna
Answer the following multiple-choice question. Question: What increases the chances of someone inheriting a mitochondrial disease? Options: A. presence of defect transgenic and undefected mtdna B. presence of defect ornithopods and undefected mtdna C. presence of defect mtdna and undefected mtdna D. presence of defect transgenic and defect mtdna Which option is correct and why?
The correct answer is: presence of defect mtdna and undefected mtdna.
What causes organisms to grow?
[ "genetic diversity", "viruses", "pathogens", "genetic material", "pollution", "prolactin release", "Time and energy", "cell division" ]
cell division
Answer the following multiple-choice question. Question: What causes organisms to grow? Options: A. genetic diversity B. viruses C. pathogens D. genetic material E. pollution F. prolactin release G. Time and energy H. cell division Which option is correct and why?
The correct answer is: cell division.
A cow eats some hay, an apple and a piece of bread. In its tummy
[ "the food rots", "the food dissolves", "the food melts", "the food grows" ]
the food dissolves
Answer the following multiple-choice question. Question: A cow eats some hay, an apple and a piece of bread. In its tummy Options: A. the food rots B. the food dissolves C. the food melts D. the food grows Which option is correct and why?
The correct answer is: the food dissolves.
Which process changes rocks by heat and pressure?
[ "Changes", "sediments", "weathering", "metamorphism" ]
metamorphism
Answer the following multiple-choice question. Question: Which process changes rocks by heat and pressure? Options: A. Changes B. sediments C. weathering D. metamorphism Which option is correct and why?
The correct answer is: metamorphism.
In humans, pharyngeal slits later develop into what?
[ "long ear", "outer ear", "middle ear", "inner ear" ]
middle ear
Answer the following multiple-choice question. Question: In humans, pharyngeal slits later develop into what? Options: A. long ear B. outer ear C. middle ear D. inner ear Which option is correct and why?
The correct answer is: middle ear.
Carbon monoxide, radon gas, dust and pet dander are sources of what kind of pollution?
[ "indoor air pollution", "noise pollution", "light pollution", "sound pollution" ]
indoor air pollution
Answer the following multiple-choice question. Question: Carbon monoxide, radon gas, dust and pet dander are sources of what kind of pollution? Options: A. indoor air pollution B. noise pollution C. light pollution D. sound pollution Which option is correct and why?
The correct answer is: indoor air pollution.
What allows theories to be widely accepted?
[ "theory", "hypothesis", "evidence", "observation" ]
evidence
Answer the following multiple-choice question. Question: What allows theories to be widely accepted? Options: A. theory B. hypothesis C. evidence D. observation Which option is correct and why?
The correct answer is: evidence.
What kind of enzyme is phosphofructokinase?
[ "orthosteric", "allosteric", "intracellular", "covalent" ]
allosteric
Answer the following multiple-choice question. Question: What kind of enzyme is phosphofructokinase? Options: A. orthosteric B. allosteric C. intracellular D. covalent Which option is correct and why?
The correct answer is: allosteric.
Which is the most likely scenario
[ "squirrels save nuts when summer is hotter than the current season", "squirrels never save food", "squirrels eat when it rains outside only", "squirrels save nuts when humans make them" ]
squirrels save nuts when summer is hotter than the current season
Answer the following multiple-choice question. Question: Which is the most likely scenario Options: A. squirrels save nuts when summer is hotter than the current season B. squirrels never save food C. squirrels eat when it rains outside only D. squirrels save nuts when humans make them Which option is correct and why?
The correct answer is: squirrels save nuts when summer is hotter than the current season.
What animal is cold-blooded?
[ "cats", "dogs", "tree hopper", "rats" ]
tree hopper
Answer the following multiple-choice question. Question: What animal is cold-blooded? Options: A. cats B. dogs C. tree hopper D. rats Which option is correct and why?
The correct answer is: tree hopper.
a what has the purpose to produce for propagation
[ "bushes", "pollen", "sperm", "root", "leaf", "stem", "flower", "orchids" ]
flower
Answer the following multiple-choice question. Question: a what has the purpose to produce for propagation Options: A. bushes B. pollen C. sperm D. root E. leaf F. stem G. flower H. orchids Which option is correct and why?
The correct answer is: flower.
What is important in preventing heat loss from the body?
[ "hydration", "a cuticle", "stay warm", "sweating", "warmth", "skin", "keratin", "Animal fur" ]
keratin
Answer the following multiple-choice question. Question: What is important in preventing heat loss from the body? Options: A. hydration B. a cuticle C. stay warm D. sweating E. warmth F. skin G. keratin H. Animal fur Which option is correct and why?
The correct answer is: keratin.
Fires cannot burn where?
[ "dormant state", "one celled organisms", "in the atmosphere", "in a pit", "in the woods", "In the winter", "the Great Barrier Reef", "vacuum of space" ]
vacuum of space
Answer the following multiple-choice question. Question: Fires cannot burn where? Options: A. dormant state B. one celled organisms C. in the atmosphere D. in a pit E. in the woods F. In the winter G. the Great Barrier Reef H. vacuum of space Which option is correct and why?
The correct answer is: vacuum of space.
Differences in what are used to produce electricity?
[ "coded genes", "hormones", "waves", "Temperature", "engines", "heat", "energy usage", "pressure" ]
pressure
Answer the following multiple-choice question. Question: Differences in what are used to produce electricity? Options: A. coded genes B. hormones C. waves D. Temperature E. engines F. heat G. energy usage H. pressure Which option is correct and why?
The correct answer is: pressure.
In type 2 diabetes, body cells do not respond to normal amounts of what hormone?
[ "hemoglobin", "insulin", "estrogen", "glucose" ]
insulin
Answer the following multiple-choice question. Question: In type 2 diabetes, body cells do not respond to normal amounts of what hormone? Options: A. hemoglobin B. insulin C. estrogen D. glucose Which option is correct and why?
The correct answer is: insulin.
Altering the physical structure of an object destructively might involve
[ "building on top of the item", "getting it broken to pieces", "none of these", "producing a better quality version" ]
getting it broken to pieces
Answer the following multiple-choice question. Question: Altering the physical structure of an object destructively might involve Options: A. building on top of the item B. getting it broken to pieces C. none of these D. producing a better quality version Which option is correct and why?
The correct answer is: getting it broken to pieces.
Some invertebrates may have which feature?
[ "invertebrate", "fat", "gills", "exception", "three", "mollusk", "complex", "shell" ]
shell
Answer the following multiple-choice question. Question: Some invertebrates may have which feature? Options: A. invertebrate B. fat C. gills D. exception E. three F. mollusk G. complex H. shell Which option is correct and why?
The correct answer is: shell.
Molds, pollen, and pet dander are examples of air pollution with what type of source?
[ "physical", "chemical", "biological", "ecological" ]
biological
Answer the following multiple-choice question. Question: Molds, pollen, and pet dander are examples of air pollution with what type of source? Options: A. physical B. chemical C. biological D. ecological Which option is correct and why?
The correct answer is: biological.
What covers the body of a fish to help the move their body to swim?
[ "skin", "scales", "hairs", "gelatin" ]
scales
Answer the following multiple-choice question. Question: What covers the body of a fish to help the move their body to swim? Options: A. skin B. scales C. hairs D. gelatin Which option is correct and why?
The correct answer is: scales.
What is the only natural phenomenon that causes more damage than earthquakes?
[ "volcanos", "landslides", "blizzards", "hurricanes" ]
hurricanes
Answer the following multiple-choice question. Question: What is the only natural phenomenon that causes more damage than earthquakes? Options: A. volcanos B. landslides C. blizzards D. hurricanes Which option is correct and why?
The correct answer is: hurricanes.
What are the proteins called that speed up biochemical reactions in cells?
[ "carbohydrates", "peptides", "hormones", "enzymes" ]
enzymes
Answer the following multiple-choice question. Question: What are the proteins called that speed up biochemical reactions in cells? Options: A. carbohydrates B. peptides C. hormones D. enzymes Which option is correct and why?
The correct answer is: enzymes.
What happens to the density of air as the altitude decreases?
[ "decreases", "remains the same", "increases", "multiplies" ]
decreases
Answer the following multiple-choice question. Question: What happens to the density of air as the altitude decreases? Options: A. decreases B. remains the same C. increases D. multiplies Which option is correct and why?
The correct answer is: decreases.
what can being exposed to wind cause?
[ "a lot of human deaths", "death and devastation", "increase in carbon", "forest is destroyed", "a tree falling", "disturbance of land surface", "loss of sunlight", "low tides" ]
disturbance of land surface
Answer the following multiple-choice question. Question: what can being exposed to wind cause? Options: A. a lot of human deaths B. death and devastation C. increase in carbon D. forest is destroyed E. a tree falling F. disturbance of land surface G. loss of sunlight H. low tides Which option is correct and why?
The correct answer is: disturbance of land surface.
What can be used to produce heat?
[ "wind", "Engine", "coal", "Ice cubes", "Sun", "energy", "time", "space" ]
wind
Answer the following multiple-choice question. Question: What can be used to produce heat? Options: A. wind B. Engine C. coal D. Ice cubes E. Sun F. energy G. time H. space Which option is correct and why?
The correct answer is: wind.
what helps make up the excretory system?
[ "sugar", "gills", "h2o", "lungs", "aorta", "bowel", "fungi", "honey" ]
bowel
Answer the following multiple-choice question. Question: what helps make up the excretory system? Options: A. sugar B. gills C. h2o D. lungs E. aorta F. bowel G. fungi H. honey Which option is correct and why?
The correct answer is: bowel.
Hundreds of organelles called myofibrils, made up of two types of protein filaments, are contained in each fiber of what?
[ "muscle", "cartilage", "hair", "bone" ]
muscle
Answer the following multiple-choice question. Question: Hundreds of organelles called myofibrils, made up of two types of protein filaments, are contained in each fiber of what? Options: A. muscle B. cartilage C. hair D. bone Which option is correct and why?
The correct answer is: muscle.
What forms in shallow tropical water?
[ "ocean", "romance", "bushes", "ferns", "reefs", "bamboo", "fossils", "snorkelling" ]
reefs
Answer the following multiple-choice question. Question: What forms in shallow tropical water? Options: A. ocean B. romance C. bushes D. ferns E. reefs F. bamboo G. fossils H. snorkelling Which option is correct and why?
The correct answer is: reefs.