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Question: What type of organism is commonly used in preparation of foods such as cheese and yogurt? Choices: A. mesophilic organisms B. gymnosperms C. protozoa D. viruses Support: Mesophiles grow best in moderate temperature, typically between 25°C and 40°C (77°F and 104°F). Mesophiles are often found living in or on t...
allenai/sciq
a2e2_sft_train_558034
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Question: What phenomenon makes global winds blow northeast to southwest or the reverse in the northern hemisphere and northwest to southeast or the reverse in the southern hemisphere? Choices: A. centrifugal effect B. muon effect C. tropical effect D. coriolis effect Support: Without Coriolis Effect the global winds w...
allenai/sciq
a2e2_sft_train_558035
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Question: Changes from a less-ordered state to a more-ordered state (such as a liquid to a solid) are always what? Choices: A. endothermic B. reactive C. unbalanced D. exothermic Support: Summary Changes of state are examples of phase changes, or phase transitions. All phase changes are accompanied by changes in the en...
allenai/sciq
a2e2_sft_train_558036
[ 14582, 25, 28140, 504, 264, 2686, 12, 10544, 1584, 311, 264, 803, 12, 10544, 1584, 320, 20805, 438, 264, 14473, 311, 264, 6437, 8, 525, 2677, 1128, 30, 78191, 25, 362, 13, 835, 1575, 21220, 425, 13, 55463, 356, 13, 650, 58402, 422, ...
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Question: What is the least dangerous radioactive decay? Choices: A. gamma decay B. beta decay C. alpha decay D. zeta decay Support: All radioactive decay is dangerous to living things, but alpha decay is the least dangerous. Answer: C. alpha decay
allenai/sciq
a2e2_sft_train_558037
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Question: Kilauea in hawaii is the world’s most continuously active volcano. very active volcanoes characteristically eject red-hot rocks and lava rather than this? Choices: A. carbon and smog B. magma C. smoke and ash D. greenhouse gases Support: Example 3.5 Calculating Projectile Motion: Hot Rock Projectile Kilauea i...
allenai/sciq
a2e2_sft_train_558038
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Question: When a meteoroid reaches earth, what is the remaining object called? Choices: A. orbit B. meteorite C. meteor D. comet Support: Meteoroids are smaller than asteroids, ranging from the size of boulders to the size of sand grains. When meteoroids enter Earth’s atmosphere, they vaporize, creating a trail of glow...
allenai/sciq
a2e2_sft_train_558039
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Question: What kind of a reaction occurs when a substance reacts quickly with oxygen? Choices: A. combustion reaction B. nitrogen reaction C. Fluid Reaction D. invention reaction Support: A combustion reaction occurs when a substance reacts quickly with oxygen (O 2 ). For example, in the Figure below , charcoal is comb...
allenai/sciq
a2e2_sft_train_558040
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Question: Organisms categorized by what species descriptor demonstrate a version of allopatric speciation and have limited regions of overlap with one another, but where they overlap they interbreed successfully?. Choices: A. fitting species B. species complex C. ring species D. surface species Support: Ring species Ri...
allenai/sciq
a2e2_sft_train_558041
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Question: Alpha emission is a type of what? Choices: A. radioactivity B. heat C. radiation D. light Support: One type of radioactivity is alpha emission. What is an alpha particle? What happens to an alpha particle after it is emitted from an unstable nucleus?. Answer: A. radioactivity
allenai/sciq
a2e2_sft_train_558042
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Question: What is the stored food in a seed called? Choices: A. endosperm B. larval C. pollin D. membrane Support: The stored food in a seed is called endosperm . It nourishes the embryo until it can start making food on its own. Answer: A. endosperm
allenai/sciq
a2e2_sft_train_558043
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Question: Zinc is more easily oxidized than iron because zinc has a lower reduction potential. since zinc has a lower reduction potential, it is a more what? Choices: A. active metal B. Trap metal C. usually metal D. much metal Support: One way to keep iron from corroding is to keep it painted. The layer of paint preve...
allenai/sciq
a2e2_sft_train_558044
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Question: What is controlled by both genes and experiences in a given envionment? Choices: A. learned behaviors B. animal behaviors C. instincts D. reflexes Support: Most animal behaviors are controlled by both genes and experiences in a given environment. Answer: B. animal behaviors
allenai/sciq
a2e2_sft_train_558045
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Question: What tells you how much of the food you should eat to get the nutrients listed on the label? Choices: A. longer size B. scoop size C. serving size D. regular size Support: The information listed at the right of the label tells you what to look for. At the top of the label, look for the serving size. The servi...
allenai/sciq
a2e2_sft_train_558046
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Question: What are used to write nuclear equations for radioactive decay? Choices: A. trigonometric symbols B. radioactive symbols C. nuclear symbols D. critical symbols Support: Nuclear symbols are used to write nuclear equations for radioactive decay. Let’s consider the example of the beta-minus decay of thorium-234 ...
allenai/sciq
a2e2_sft_train_558047
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Question: What is controlled by regulatory proteins that bind to regulatory elements on dna? Choices: A. amino acids B. substance transcription C. gene transcription D. mRNA Support: Gene transcription is controlled by regulatory proteins that bind to regulatory elements on DNA. The proteins usually either activate or ...
allenai/sciq
a2e2_sft_train_558048
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Question: Boron only occurs naturally in compounds with what element? Choices: A. carbon B. oxygen C. nitrogen D. helium Support: Occurrence, Preparation, and Compounds of Boron and Silicon Boron constitutes less than 0.001% by weight of the earth’s crust. In nature, it only occurs in compounds with oxygen. Boron is wi...
allenai/sciq
a2e2_sft_train_558049
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Question: What organ systems link exchange surfaces with cells throughout the body? Choices: A. vascular B. circulatory C. nervous D. pulmonary Support: 42.1 Circulatory systems link exchange surfaces with cells throughout the body. Answer: B. circulatory
allenai/sciq
a2e2_sft_train_558050
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Question: What occurs when the immune system attacks a harmless substance that enters the body from the outside? Choices: A. allergy B. nausea C. panic attack D. plague Support: An allergy occurs when the immune system attacks a harmless substance that enters the body from the outside. A substance that causes an allerg...
allenai/sciq
a2e2_sft_train_558051
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Question: Fertilization is the union of a sperm and egg, resulting in the formation of what? Choices: A. a bacteriophage B. a nuclei C. a zygote D. a cytoplasm Support: Fertilization is the union of a sperm and egg, resulting in the formation of a zygote. Answer: C. a zygote
allenai/sciq
a2e2_sft_train_558052
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Question: The plants alternation between haploid and diploud generations allow it to do what? Choices: A. reproduce sexually and autonomously B. reproduce asexually and biologically C. reproduce asexually and simultaneously D. reproduce asexually and sexually Support: All plants have a characteristic life cycle that in...
allenai/sciq
a2e2_sft_train_558053
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Question: Most of the chemical reactions in the body are facilitated by what? Choices: A. enzymes B. vitamins C. proteins D. carbohydrates Support: Enzymes are critical to the body’s healthy functioning. They assist, for example, with the breakdown of food and its conversion to energy. In fact, most of the chemical rea...
allenai/sciq
a2e2_sft_train_558054
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Question: What is the termination of a pregnancy in progress called? Choices: A. abortion B. delivery C. miscarriage D. contraception Support: Answer: A. abortion
allenai/sciq
a2e2_sft_train_558055
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Question: Cutting down on the use of chemical fertilizers and preserving wetlands are ways to prevent what "unlivable" regions in bodies of water? Choices: A. hostile zones B. fresh zones C. dead zones D. inhabitable zones Support: Cutting down on the use of chemical fertilizers is one way to prevent dead zones in bodi...
allenai/sciq
a2e2_sft_train_558056
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Question: Which muscles allow your fingers to also make precise movements for actions? Choices: A. intrinsic muscles B. motoric muscles C. fine movement muscles D. paired muscles Support: Intrinsic Muscles of the Hand The intrinsic muscles of the hand both originate and insert within it (Figure 11.28). These muscles al...
allenai/sciq
a2e2_sft_train_558057
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Question: Testing what usually requires making observations or performing experiments? Choices: A. homeostasis B. conclusion C. variables D. hypothesis Support: Usually, testing a hypothesis requires making observations or performing experiments. In this case, we will look into existing scientific literature to see if ...
allenai/sciq
a2e2_sft_train_558058
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Question: This sharing of electrons produces what is known as a covalent bond. covalent bonds are ~20 to 50 times stronger than what? Choices: A. van der waals interactions B. gravitational pull C. Newton's third law D. Mendelian systems Support: any other electron, they become a part of the molecule’s electron system....
allenai/sciq
a2e2_sft_train_558059
[ 14582, 25, 1096, 11560, 315, 56578, 18644, 1128, 374, 3881, 438, 264, 1062, 831, 306, 10815, 13, 1062, 831, 306, 26363, 525, 3968, 17, 15, 311, 220, 20, 15, 3039, 16245, 1091, 1128, 30, 78191, 25, 362, 13, 5242, 2694, 10450, 1127, 2...
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Question: Water molecules move about continuously due to what type of energy? Choices: A. kinetic B. seismic C. potential D. optical Support: Water molecules move about continuously due to their kinetic energy. When a crystal of sodium chloride is placed into water, the water’s molecules collide with the crystal lattic...
allenai/sciq
a2e2_sft_train_558060
[ 14582, 25, 9959, 34615, 3271, 911, 30878, 4152, 311, 1128, 943, 315, 4802, 30, 78191, 25, 362, 13, 70323, 425, 13, 71479, 356, 13, 4650, 422, 13, 28293, 9186, 25, 9959, 34615, 3271, 911, 30878, 4152, 311, 862, 70323, 4802, 13, 3197, ...
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Question: A small scale version of what type of map displays individual rock units? Choices: A. geologic map B. geographic map C. polar map D. seismic map Support: Geologic maps display rock units and geologic features. A small scale map displays individual rock units while a large scale map shows geologic provinces. A...
allenai/sciq
a2e2_sft_train_558061
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Question: What is defined as a change in the inherited traits of organisms over time? Choices: A. divergence B. variation C. generation D. evolution Support: One idea is that evolution happens. Evolution is a change in the inherited traits of organisms over time. Living things have changed as descendants diverged from ...
allenai/sciq
a2e2_sft_train_558062
[ 14582, 25, 3555, 374, 4512, 438, 264, 2297, 304, 279, 26990, 24055, 315, 43204, 916, 882, 30, 78191, 25, 362, 13, 81158, 425, 13, 22990, 356, 13, 9471, 422, 13, 15379, 9186, 25, 3776, 4522, 374, 429, 15379, 8573, 13, 37221, 374, 264...
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Question: What hormone, which is associated with luteinizing hormone and male sexuality, helps bring about physical changes in puberty? Choices: A. steroids B. testosterone C. estrogen D. epinephrine Support: What causes puberty to begin? The hypothalamus in the brain “tells” the pituitary gland to secrete hormones tha...
allenai/sciq
a2e2_sft_train_558063
[ 14582, 25, 3555, 35808, 11, 892, 374, 5815, 448, 326, 1070, 258, 4849, 35808, 323, 8593, 38175, 11, 8609, 4446, 911, 6961, 4344, 304, 86298, 30, 78191, 25, 362, 13, 57061, 425, 13, 38932, 356, 13, 69080, 422, 13, 4155, 482, 759, 390...
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Question: Where do angiosperms produce seeds in flowers? Choices: A. testes B. ovaries C. germs D. cones Support: Seed plants called angiosperms produce seeds in the ovaries of flowers. Answer: B. ovaries
allenai/sciq
a2e2_sft_train_558064
[ 14582, 25, 10967, 653, 6454, 3530, 87772, 8193, 19056, 304, 19281, 30, 78191, 25, 362, 13, 1273, 288, 425, 13, 65068, 550, 356, 13, 17239, 1011, 422, 13, 86892, 9186, 25, 35822, 10779, 2598, 6454, 3530, 87772, 8193, 19056, 304, 279, 6...
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Question: In order to create food, what do photosynthetic protists use? Choices: A. decayed matter B. hydrocarbons C. light energy D. thermal energy Support: Photosynthetic protists use light energy to make food. They are major producers in aquatic ecosystems. Answer: C. light energy
allenai/sciq
a2e2_sft_train_558065
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Question: What type of vertebrates are birds? Choices: A. endothermic tetrapod B. epidermal tetrapod C. exothermic D. invertebrates Support: Birds are endothermic tetrapod vertebrates. They are bipedal, which means they walk on two legs. Birds also lay amniotic eggs, and the eggs have hard, calcium carbonate shells. Al...
allenai/sciq
a2e2_sft_train_558066
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Question: What type of ions do ionic compounds contain? Choices: A. negative and neutal B. regular and irregular C. positive and charged D. positive and negative Support: An ionic compound contains positive and negative ions. Answer: D. positive and negative
allenai/sciq
a2e2_sft_train_558067
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Question: All living things need air and this to survive? Choices: A. water B. habitat C. ecosystem D. stimuli Support: Answer: A. water
allenai/sciq
a2e2_sft_train_558068
[ 14582, 25, 2009, 5382, 2513, 1184, 3720, 323, 419, 311, 17697, 30, 78191, 25, 362, 13, 3015, 425, 13, 38546, 356, 13, 24982, 422, 13, 55588, 9186, 25, 220, 21806, 25, 362, 13, 3015, 151643, 151643, 151643, 151643, 151643, 151643, 151643...
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Question: The cells of all eukarya have a what? Choices: A. nucleus B. chloroplast C. necrosis D. epidermis Support: Some Eukarya are also single-celled, but many are multicellular. Some have a cell wall; others do not. However, the cells of all Eukarya have a nucleus and other organelles. Answer: A. nucleus
allenai/sciq
a2e2_sft_train_558069
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Question: What type of plate boundaries produce huge mountain ranges in the ocean basin? Choices: A. coherent B. divergent C. parallel D. tractional Support: Divergent plate boundaries produce huge mountain ranges under water in every ocean basin. Answer: B. divergent
allenai/sciq
a2e2_sft_train_558070
[ 14582, 25, 3555, 943, 315, 11968, 22711, 8193, 6765, 16301, 21283, 304, 279, 17951, 57209, 30, 78191, 25, 362, 13, 55787, 425, 13, 36341, 15772, 356, 13, 15279, 422, 13, 46855, 278, 9186, 25, 422, 1524, 15772, 11968, 22711, 8193, 6765, ...
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Question: Interstitial carbides are produced by the reaction of most transition metals at high temperatures with what element? Choices: A. nitrogen B. hydrogen C. oxygen D. carbon Support: temperatures with electropositive metals such as those of groups 1 and 2 and aluminum produces ionic carbides, which contain discre...
allenai/sciq
a2e2_sft_train_558071
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Question: Fungus-like protist saprobes play what role in a food chain and are specialized to absorb nutrients from nonliving organic matter, such as dead organisms or their wastes? Choices: A. aphids B. decomposers C. fluxes D. Soil Support: Agents of Decomposition The fungus-like protist saprobes are specialized to ab...
allenai/sciq
a2e2_sft_train_558072
[ 14582, 25, 434, 2185, 355, 12681, 1724, 380, 34635, 299, 9433, 1486, 1128, 3476, 304, 264, 3607, 8781, 323, 525, 27076, 311, 34306, 36393, 504, 2477, 63175, 17356, 4925, 11, 1741, 438, 5593, 43204, 476, 862, 81220, 30, 78191, 25, 362, ...
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Question: What are the sites of protein synthesis or assembly? Choices: A. plasma B. chloroplasts C. ribosomes D. chromosomes Support: Ribosomes are small organelles and are the sites of protein synthesis (or assembly). They are made of ribosomal protein and ribosomal RNA, and are found in both eukaryotic and prokaryot...
allenai/sciq
a2e2_sft_train_558073
[ 14582, 25, 3555, 525, 279, 6594, 315, 12833, 38875, 476, 14614, 30, 78191, 25, 362, 13, 31326, 425, 13, 36733, 91235, 82, 356, 13, 20131, 57275, 422, 13, 82081, 9186, 25, 63105, 57275, 525, 2613, 1240, 2387, 642, 323, 525, 279, 6594, ...
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Question: What must replicate in the cell cycle before meiosis i takes place? Choices: A. sperm B. cell walls C. meiotic fluid D. dna Support: Meiosis I begins after DNA replicates during interphase of the cell cycle. In both meiosis I and meiosis II , cells go through the same four phases as mitosis - prophase, metaph...
allenai/sciq
a2e2_sft_train_558074
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Question: What phenomenon is primarily the result of plate tectonic motions? Choices: A. volcanoes B. eruption C. tsunamis D. earthquake Support: Earthquakes are primarily the result of plate tectonic motions. What type of stress would cause earthquakes at each of the three types of plate boundaries?. Answer: D. earthq...
allenai/sciq
a2e2_sft_train_558075
[ 14582, 25, 3555, 24844, 374, 15503, 279, 1102, 315, 11968, 259, 439, 14011, 53145, 30, 78191, 25, 362, 13, 35273, 7072, 425, 13, 79402, 356, 13, 10591, 359, 309, 285, 422, 13, 37313, 9186, 25, 9237, 446, 2050, 525, 15503, 279, 1102, ...
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Question: What is a group of neuron cell bodies in the periphery called? Choices: A. organism B. crystals C. gangism D. ganglion Support: Ganglia A ganglion is a group of neuron cell bodies in the periphery. Ganglia can be categorized, for the most part, as either sensory ganglia or autonomic ganglia, referring to thei...
allenai/sciq
a2e2_sft_train_558076
[ 14582, 25, 3555, 374, 264, 1874, 315, 48284, 2779, 12866, 304, 279, 817, 93548, 2598, 30, 78191, 25, 362, 13, 46020, 425, 13, 47373, 356, 13, 13179, 2142, 422, 13, 13179, 78151, 9186, 25, 34417, 23350, 362, 13179, 78151, 374, 264, 187...
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Question: Where does most of our food come from? Choices: A. lichen B. angiosperms C. gymnosperms D. microbes Support: Answer: B. angiosperms
allenai/sciq
a2e2_sft_train_558077
[ 14582, 25, 10967, 1558, 1429, 315, 1039, 3607, 2525, 504, 30, 78191, 25, 362, 13, 326, 28324, 425, 13, 6454, 3530, 87772, 356, 13, 18813, 36391, 87772, 422, 13, 79627, 9186, 25, 220, 21806, 25, 425, 13, 6454, 3530, 87772, 151643, 1516...
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Question: Gases are most ideal at high temperature and what pressure? Choices: A. stable B. absolute C. low D. high Support: Under what conditions then, do gases behave least ideally? When a gas is put under high pressure, its molecules are forced closer together as the empty space between the particles is diminished. ...
allenai/sciq
a2e2_sft_train_558078
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Question: Hard igneous rocks and easily dissolved sedimentary rocks respond very differently to what natural force? Choices: A. gravity B. weathering C. sunlight D. evaporation Support: Each type of rock weathers in its own way. Certain types of rock are very resistant to weathering. Igneous rocks tend to weather slowl...
allenai/sciq
a2e2_sft_train_558079
[ 14582, 25, 11232, 5222, 33072, 23035, 323, 6707, 55667, 58032, 658, 23035, 5889, 1602, 21303, 311, 1128, 5810, 5344, 30, 78191, 25, 362, 13, 23249, 425, 13, 9104, 287, 356, 13, 39020, 422, 13, 3637, 95549, 9186, 25, 8886, 943, 315, 69...
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Question: A diet rich in calcium and what vitamin may reduce the risk of osteoporosis and related bone fractures? Choices: A. vitamin d B. vitamin C C. vitamin A D. niacin Support: Skeletal system problems include osteoporosis, bone fractures, and ligament sprains. A diet rick in calcium and vitamin D may reduce the ri...
allenai/sciq
a2e2_sft_train_558080
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Question: How many people die from air pollution each year? Choices: A. 14 million B. 22 million C. 5 million D. 17 million Support: Air pollution is harmful to human beings and other living things. About 22 million people die from air pollution each year. Breathing polluted air increases the risk of developing lung di...
allenai/sciq
a2e2_sft_train_558081
[ 14582, 25, 2585, 1657, 1251, 2746, 504, 3720, 24761, 1817, 1042, 30, 78191, 25, 362, 13, 220, 16, 19, 3526, 425, 13, 220, 17, 17, 3526, 356, 13, 220, 20, 3526, 422, 13, 220, 16, 22, 3526, 9186, 25, 6553, 24761, 374, 27756, 311, ...
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Question: What substances serve as catalysts in most of the biochemical reactions that take place in organisms? Choices: A. hormones B. iseotrops C. carbohydrates D. enzymes Support: Enzymes are involved in most of the biochemical reactions that take place in organisms. About 4,000 such reactions are known to be cataly...
allenai/sciq
a2e2_sft_train_558082
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Question: The formation of an amalgam allows the metal to react with what? Choices: A. air and water B. helium and oxygen C. cloth and plastic D. blood and sweat Support: The metals of group 13 (Al, Ga, In, and Tl) are all reactive. However, passivation occurs as a tough, hard, thin film of the metal oxide forms upon e...
allenai/sciq
a2e2_sft_train_558083
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Question: A pulley changes the direction of the force t exerted by the cord without changing its what? Choices: A. latitude B. magnitude C. longitude D. position Support: automobile axle drives a wheel, which has a much larger diameter than the axle. The MA is less than 1. (c) An ordinary pulley is used to lift a heavy...
allenai/sciq
a2e2_sft_train_558084
[ 14582, 25, 362, 7737, 3179, 4344, 279, 5106, 315, 279, 5344, 259, 42744, 291, 553, 279, 22324, 2041, 10018, 1181, 1128, 30, 78191, 25, 362, 13, 20849, 425, 13, 25621, 356, 13, 20515, 422, 13, 2309, 9186, 25, 34428, 72100, 20118, 264, ...
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Question: What is the name of the small bumps that contain taste buds and covers the tongue? Choices: A. cuticle B. palatine tonsils C. papillae D. lingual tonsils Support: Figure 14.3 The Tongue The tongue is covered with small bumps, called papillae, which contain taste buds that are sensitive to chemicals in ingeste...
allenai/sciq
a2e2_sft_train_558085
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Question: In the absence of air resistance, all falling objects accelerate at the same rate due to what force? Choices: A. motion B. velocity C. gravity D. weight Support: What if you were to drop a bowling ball and a soccer ball at the same time from the same distance above the ground? The bowling ball has greater mas...
allenai/sciq
a2e2_sft_train_558086
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Question: The ability for a plasma membrane to only allow certain molecules in or out of the cell is referred to as what? Choices: A. moderate permeability B. periodic permeability C. selective permeability D. total permeability Support: The plasma membrane forms a barrier between the cytoplasm inside the cell and the ...
allenai/sciq
a2e2_sft_train_558087
[ 14582, 25, 576, 5726, 369, 264, 31326, 38554, 311, 1172, 2138, 3654, 34615, 304, 476, 700, 315, 279, 2779, 374, 13862, 311, 438, 1128, 30, 78191, 25, 362, 13, 23193, 54324, 2897, 425, 13, 38345, 54324, 2897, 356, 13, 42910, 54324, 289...
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Question: In the presence of oxygen, hydrogen can interact to make what? Choices: A. helium B. water C. carbon D. acid Support: A pile of leaves slowly rots in the backyard. In the presence of oxygen, hydrogen can interact to make water. Gold can be stretched into very thin wires. Answer: B. water
allenai/sciq
a2e2_sft_train_558088
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Question: What galaxy is our solar system a part of? Choices: A. Centaurus B. Andromeda C. milky way D. Bode's Galaxy Support: Compared to Earth, the solar system is a big place. But galaxies are bigger - a lot bigger. A galaxy is a very large group of stars held together by gravity. How enormous a galaxy is and how ma...
allenai/sciq
a2e2_sft_train_558089
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Question: The angle at which light bends when it enters a different medium is known as what? Choices: A. frequency B. resonance C. refraction D. bounce Support: The angle at which light bends when it enters a different medium depends on its change in speed. The greater the change in speed, the greater the angle of refr...
allenai/sciq
a2e2_sft_train_558090
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Question: Whether the organism is a bacterium, plant, or animal, all living things access energy by breaking down these? Choices: A. carbohydrate molecules B. protein molecules C. oxygen molecules D. lipid molecules Support: The Energy Cycle Whether the organism is a bacterium, plant, or animal, all living things acces...
allenai/sciq
a2e2_sft_train_558091
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Question: Increasing the temperature of n2 molecules increases what energy of motion? Choices: A. residual energy B. emotional energy C. kinetic energy D. compression energy Support: Increasing the temperature increases the average kinetic energy of the N2molecules. Answer: C. kinetic energy
allenai/sciq
a2e2_sft_train_558092
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Question: Which radio frequency should you listen to if you want less noise? Choices: A. wave B. fm C. am D. cb Support: FM radio is inherently less subject to noise from stray radio sources than AM radio. The reason is that amplitudes of waves add. So an AM receiver would interpret noise added onto the amplitude of it...
allenai/sciq
a2e2_sft_train_558093
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Question: What form of radiation is the energy emitted by the sun? Choices: A. seismic B. magnetic C. electromagnetic D. thermal Support: Figure 8.11 The sun emits energy in the form of electromagnetic radiation. This radiation exists at different wavelengths, each of which has its own characteristic energy. All electr...
allenai/sciq
a2e2_sft_train_558094
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Question: What is the suns innermost layer called? Choices: A. flare B. surface C. solar D. core Support: The core is the Sun's innermost layer. The core is plasma. It has a temperature of around 15 million degrees Celsius (C). Nuclear fusion reactions create the immense temperature. In these reactions, hydrogen atoms ...
allenai/sciq
a2e2_sft_train_558095
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Question: A growth spurt requires constant divisions of what? Choices: A. cells B. seeds C. hairs D. proteins Support: To grow and develop, you must form new cells. Imagine how often your cells must divide during a growth spurt. Growing just an inch requires countless cell divisions. Your body must produce new bone cel...
allenai/sciq
a2e2_sft_train_558096
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Question: What's the term for the gradual progression from simple plants to larger more complex ones in an area? Choices: A. primary pattern B. complex progression C. primary succession D. pattern progression Support: The pioneer species is soon replaced by other populations. Abiotic factors such as soil quality, water...
allenai/sciq
a2e2_sft_train_558097
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Question: Fungi may form mutualistic relationships with plants, algae, cyanobacteria, and what? Choices: A. farmers B. plants C. animals D. eggs Support: Answer: C. animals
allenai/sciq
a2e2_sft_train_558098
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Question: Which cycle tracks the flow of nitrogen through an ecosystem? Choices: A. nitrogen cycle B. life cycle C. water cycle D. nitrogen reaction Support: Mariana Ruiz Villarreal (LadyofHats) for CK-12 Foundation. The nitrogen cycle tracks the flow of nitrogen through an ecosystem . CC BY-NC 3.0. Answer: A. nitrogen...
allenai/sciq
a2e2_sft_train_558099
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Question: What consequence of a tornado is responsible for most injuries and deaths? Choices: A. flying debris B. catching debris C. falling debris D. touring debris Support: A tornado only strikes a small area. But it can destroy everything in its path. Most injuries and deaths from tornadoes are caused by flying debr...
allenai/sciq
a2e2_sft_train_558100
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Question: What are the only truly innate behaviors in humans called? Choices: A. automatic movements B. feats C. reflexes D. flinches Support: All animals have innate behaviors, even human beings. Can you think of human behaviors that do not have to be learned? Chances are, you will have a hard time thinking of any. Th...
allenai/sciq
a2e2_sft_train_558101
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Question: What happens to the density of air as the altitude decreases? Choices: A. decreases B. remains the same C. increases D. multiplies Support: The pressure of the earth’s atmosphere, as with any fluid, increases with the height of the column of air. In the case of earth’s atmosphere, there are some complications...
allenai/sciq
a2e2_sft_train_558102
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Question: How do some animals change their depth? Choices: A. spontaneous mutations B. mass migration C. by changing their density D. metamorphosis Support: Some animals change their depth by changing their density. Recall that things that are denser than their surroundings sink while those that are less dense than the...
allenai/sciq
a2e2_sft_train_558103
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Question: What phenomenon is crowding out other species and making all the other causes of extinction worse? Choices: A. human suburbanization B. human overpopulation C. climate change D. migration Support: Human overpopulation, which is crowding out other species. It also makes all the other causes of extinction worse...
allenai/sciq
a2e2_sft_train_558104
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Question: Dessication is an extreme and usually fatal form of what in animals? Choices: A. starvation B. dehydration C. depletion D. diarrhea Support: Answer: B. dehydration
allenai/sciq
a2e2_sft_train_558105
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Question: Internal and external forms of what life process occur as simple diffusion due to a partial pressure gradient? Choices: A. reproduction B. metabolism C. photosynthesis D. respiration Support: Internal Respiration Internal respiration is gas exchange that occurs at the level of body tissues (Figure 22.23). Sim...
allenai/sciq
a2e2_sft_train_558106
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Question: The fossil record shows that this type of event is followed by the evolution of new species to fill the habitats where old species lived? Choices: A. moderate extinction B. mass extinction C. minor extinction D. formation extinction Support: After each mass extinction, new species evolve to fill the habitats ...
allenai/sciq
a2e2_sft_train_558107
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Question: Soluble minerals and clays accumulate in what soil layer, allowing it to hold more water? Choices: A. subsoil B. subsurface C. topsoil D. silt Support: Below the topsoil is the “B” horizon. This is also called the subsoil . Soluble minerals and clays accumulate in the subsoil. Because it has less organic mate...
allenai/sciq
a2e2_sft_train_558108
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Question: What is the common word for potential difference in a circuit? Choices: A. voltage B. watt C. frequency D. velocity Support: Conceptual Questions 19.1 Electric Potential Energy: Potential Difference 1. Voltage is the common word for potential difference. Which term is more descriptive, voltage or potential di...
allenai/sciq
a2e2_sft_train_558109
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Question: How many chambers does the stomach of a crocodile have? Choices: A. ten B. three C. six D. two Support: The crocodilian digestive system is highly adapted to their lifestyle. Crocodilians are known to swallow stones, known as gastroliths , which help digest their prey. The crocodilian stomach is divided into ...
allenai/sciq
a2e2_sft_train_558110
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Question: When populations get close to the carrying capacity, what happens to growth? Choices: A. halts B. spikes C. slows D. dies Support: Populations usually grow bigger when they have what they need. How fast they grow depends on birth and death rates. They grow more slowly as they get close to the carrying capacit...
allenai/sciq
a2e2_sft_train_558111
[ 14582, 25, 3197, 21910, 633, 3265, 311, 279, 15331, 8654, 11, 1128, 8573, 311, 6513, 30, 78191, 25, 362, 13, 14761, 2576, 425, 13, 50660, 356, 13, 69170, 422, 13, 8725, 9186, 25, 10254, 7455, 5990, 3063, 11243, 979, 807, 614, 1128, ...
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Question: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good what? Choices: A. transporter B. insulator C. magnet D. absorber Support: Although air can transfer heat rapidly by convection, it is a poor conductor and thus a good insulator. The amount of available space for airfl...
allenai/sciq
a2e2_sft_train_558112
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Question: Most plants grow continuously, except for what periods? Choices: A. abnormal B. mutant C. winter D. dormant Support: Answer: D. dormant
allenai/sciq
a2e2_sft_train_558113
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Question: What man-made devices in space are used to observe the earth's surface? Choices: A. crystals B. telescopes C. sensors D. satellites Support: Observations can happen on many scales. You can use a microscope to observe tiny things. You can use a telescope to observe distant things in space. To learn about the e...
allenai/sciq
a2e2_sft_train_558114
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Question: Carboxylic acids are weak acids, meaning they are not 100% ionized in what? Choices: A. liquid B. air C. water D. ethanol Support: Carboxylic acids are weak acids (see the chapter on acids and bases), meaning they are not 100% ionized in water. Generally only about 1% of the molecules of a carboxylic acid dis...
allenai/sciq
a2e2_sft_train_558115
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Question: An endocrine disease usually involves the secretion of too much or not enough of what? Choices: A. metabolite B. enzyme C. hormone D. sweat Support: Diseases of the endocrine system are relatively common. An endocrine disease usually involves the secretion of too much or not enough hormone. When too much horm...
allenai/sciq
a2e2_sft_train_558116
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Question: In experiments with garden peas, austrian monk gregor mendel described the basic patterns of what? Choices: A. color B. inheritance C. behavior D. preference Support: For thousands of years, humans have understood that characteristics such as eye color, hair color, or even flower color are passed from one gen...
allenai/sciq
a2e2_sft_train_558117
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Question: Nutrition and diet affect your metabolism. more energy is required to break down fats and proteins than this? Choices: A. vitamins B. carbohydrates C. minerals D. electrolytes Support: 24.7 Nutrition and Diet Nutrition and diet affect your metabolism. More energy is required to break down fats and proteins th...
allenai/sciq
a2e2_sft_train_558118
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Question: What are unsaturated hydrocarbons with at least one double bond between carbon atoms called? Choices: A. enzymes B. peptides C. amines D. alkenes Support: Alkenes are unsaturated hydrocarbons with at least one double bond between carbon atoms. Answer: D. alkenes
allenai/sciq
a2e2_sft_train_558119
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Question: What is the opposite of melting? Choices: A. freezing B. liquidation C. evaporation D. compression Support: All of the changes of state that occur between solid, liquid and gas are summarized in the diagram in the figure below. Freezing is the opposite of melting and both represent the equilibrium between the...
allenai/sciq
a2e2_sft_train_558120
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Question: A unique characteristic of mammals is the ability to chew, this happens by the temporalis and the masseter allowing what? Choices: A. Grinding B. Up and down C. Bakward and forward D. side-to-side movement Support: The adductor muscle that closes the jaw is composed of two muscles in mammals: the temporalis a...
allenai/sciq
a2e2_sft_train_558121
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Question: Most of the pathogens that cause stis enter the body through mucous membranes of which organs? Choices: A. reproductive organs B. kidneys C. eyes D. stomach Support: Most of the pathogens that cause STIs enter the body through mucous membranes of the reproductive organs. All sexual behaviors that involve cont...
allenai/sciq
a2e2_sft_train_558122
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Question: The activation of what kind of buds induces branching? Choices: A. arterial buds B. leafy buds C. lymphatic buds D. axillary buds Support: Answer: D. axillary buds
allenai/sciq
a2e2_sft_train_558123
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Question: Sexual reproduction involves haploid gametes and produces a diploid zygote through what process? Choices: A. fertilization B. infection C. vivisection D. sedimentation Support: Sexual reproduction involves haploid gametes and produces a diploid zygote through fertilization. Answer: A. fertilization
allenai/sciq
a2e2_sft_train_558124
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Question: All alkanes are composed of carbon and hydrogen atoms, and have similar bonds, structures, and formulas; noncyclic alkanes all have a formula of cnh2n+2. the number of carbon atoms present in an alkane has what? Choices: A. done limit B. such limit C. crippling limit D. no limit Support: All alkanes are compo...
allenai/sciq
a2e2_sft_train_558125
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Question: What percentage of men suffer from some form of erectile dysfunction by age 40? Choices: A. approximately 10 percent B. approximately 60 percent C. approximately 40 percent D. approximately 80 percent Support: Male Reproductive System Erectile dysfunction (ED) is a condition in which a man has difficulty eith...
allenai/sciq
a2e2_sft_train_558126
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Question: What secures together immovable joints and prevents them from moving? Choices: A. dense cartilage B. light cartilage C. dense collagen D. light collagen Support: Immovable joints allow no movement because the bones at these joints are held securely together by dense collagen . The bones of the skull are conne...
allenai/sciq
a2e2_sft_train_558127
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Question: Transform faults are the site of massive what? Choices: A. earthquakes B. storms C. vibrations D. tornadoes Support: Transform faults are the site of massive earthquakes. Answer: A. earthquakes
allenai/sciq
a2e2_sft_train_558128
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Question: When water goes above and below its freezing point, what rock-breaking phenomenon is common? Choices: A. ice inverting B. ice wedging C. ice locking D. ice crushing Support: Rocks can break apart into smaller pieces in many ways. Ice wedging is common where water goes above and below its freezing point ( Figu...
allenai/sciq
a2e2_sft_train_558129
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Question: The diatoms are unicellular photosynthetic protists that encase themselves in intricately patterned, glassy cell walls composed of silicon dioxide in a matrix of organic particles. these protists are a component of freshwater and these? Choices: A. land plankton B. source plankton C. marine plankton D. waste ...
allenai/sciq
a2e2_sft_train_558130
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Question: What type of reactions form compounds? Choices: A. consumption reactions B. chemical reactions C. mineral reactions D. physical reactions Support: A compound is a unique substance that forms when two or more elements combine chemically. Compounds form as a result of chemical reactions. The elements in compoun...
allenai/sciq
a2e2_sft_train_558131
[ 14582, 25, 3555, 943, 315, 24473, 1352, 31146, 30, 78191, 25, 362, 13, 15293, 24473, 425, 13, 11483, 24473, 356, 13, 24136, 24473, 422, 13, 6961, 24473, 9186, 25, 362, 23628, 374, 264, 4911, 19699, 429, 7586, 979, 1378, 476, 803, 5424...
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Question: Millions of years ago, plants used energy from the sun to form what? Choices: A. fossil fuels B. evolution C. carbon compounds D. greenhouse gases Support: Fossil fuels include coal, oil, and natural gas. Fossil fuels are the greatest energy source for modern society. Millions of years ago, plants used energy...
allenai/sciq
a2e2_sft_train_558132
[ 14582, 25, 73318, 315, 1635, 4134, 11, 10779, 1483, 4802, 504, 279, 7015, 311, 1352, 1128, 30, 78191, 25, 362, 13, 30276, 39273, 425, 13, 15379, 356, 13, 12499, 31146, 422, 13, 36547, 44512, 9186, 25, 434, 83961, 39273, 2924, 11497, 1...
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Question: What is the term for the process in which living things with beneficial traits produce more offspring than others do? Choices: A. natural process B. natural variety C. natural selection D. natural survival Support: The other idea is that evolution occurs by natural selection. Natural selection is the process ...
allenai/sciq
a2e2_sft_train_558133
[ 14582, 25, 3555, 374, 279, 4647, 369, 279, 1882, 304, 892, 5382, 2513, 448, 23699, 24055, 8193, 803, 45371, 1091, 3800, 653, 30, 78191, 25, 362, 13, 5810, 1882, 425, 13, 5810, 8045, 356, 13, 5810, 6589, 422, 13, 5810, 19661, 9186, 2...
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