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When animals get rid of their gaseous waste, what is exhaled through their mouth and nose? | hydrogen | oxygen | carbon monoxide | carbon dioxide | Direct Question | Answer the following question given this paragraph:
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Q: When animals get rid of their gaseous waste, what is exhaled through their mouth and nose?
A: | carbon dioxide | |
What is another name for composite volcanos? | seismic giants | fjords | fault lines | stratovolcanoes | Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash ( Figure below ). The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too far from the vent. The thick magma may also create ex... | Direct Question | Answer the following question given this paragraph:
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Composite volcanoes are also called stratovolcanoes. This is because they are formed by alternating layers (strata) of magma and ash ( Figure below ). The magma that creates composite volcanoes tends to be thick. The steep sides form because the lava cannot flow too... | stratovolcanoes |
Fossil records support the idea that periods of little change may be interrupted by bursts of rapid change, an evolutionary model contrasted by what? | minimalism | elitism | darwinian | gradualism | When geologic and climatic conditions are changing, evolution may occur more quickly. Thus, long periods of little change may be interrupted by bursts of rapid change. This model of the timing of evolution is called punctuated equilibrium . It is better supported by the fossil record than is gradualism. | Direct Question | Answer the following question given this paragraph:
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When geologic and climatic conditions are changing, evolution may occur more quickly. Thus, long periods of little change may be interrupted by bursts of rapid change. This model of the timing of evolution is called punctuated equilibrium . It is better supported by... | gradualism |
What type of winds occur when air is forced over a mountain range? | doldrums | local winds | trade winds | chinook winds | Chinook winds ( Figure below ) occur when air is forced over a mountain range. Warm air rises over the Sierra Nevada in California, for example, because it is pushed eastward by the westerly winds. The air cools as it rises and precipitates. The air is now dry. It sinks down the far side of the mountains and may create... | Direct Question | Answer the following question given this paragraph:
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Chinook winds ( Figure below ) occur when air is forced over a mountain range. Warm air rises over the Sierra Nevada in California, for example, because it is pushed eastward by the westerly winds. The air cools as it rises and precipitates. The air is now dry. It s... | chinook winds |
What do clouds trap into the atmosphere at night? | smog | seawater | light | heat | Clouds block sunlight in the day. Clouds trap heat in the atmosphere at night. | Direct Question | Answer the following question given this paragraph:
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Clouds block sunlight in the day. Clouds trap heat in the atmosphere at night.
Q: What do clouds trap into the atmosphere at night?
A: | heat |
A nerve cell that carries messages is called a? | platelet | mitochondria | stem cell | neuron | The nervous system is made up of nerves. A nerve is a bundle of nerve cells. A nerve cell that carries messages is called a neuron. The messages carried by neurons are called nerve impulses. | Direct Question | Answer the following question given this paragraph:
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The nervous system is made up of nerves. A nerve is a bundle of nerve cells. A nerve cell that carries messages is called a neuron. The messages carried by neurons are called nerve impulses.
Q: A nerve cell that carries messages is called a?
A: | neuron |
What group of animals are the largest arthropods? | spiders | birds | fish | insects | There are several traits shared by all arthropods. Arthropods have a complete digestive system. They also have a circulatory system and a nervous system. In addition, they have special organs for breathing and excreting wastes. Other traits of arthropods include:. | Direct Question | Answer the following question given this paragraph:
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There are several traits shared by all arthropods. Arthropods have a complete digestive system. They also have a circulatory system and a nervous system. In addition, they have special organs for breathing and excreting wastes. Other traits of arthropods include:.
... | insects |
What term describes a collection of similar cells that had a common embryonic origin? | nucleus | organ-level organization | plasma | tissue | Complex Tissue Structure A hallmark trait of animals is specialized structures that are differentiated to perform unique functions. As multicellular organisms, most animals develop specialized cells that group together into tissues with specialized functions. A tissue is a collection of similar cells that had a common ... | Direct Question | Answer the following question given this paragraph:
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Complex Tissue Structure A hallmark trait of animals is specialized structures that are differentiated to perform unique functions. As multicellular organisms, most animals develop specialized cells that group together into tissues with specialized functions. A tiss... | tissue |
Most biochemical molecules are macromolecules, meaning that they are what? | very abundant | very dense | very small | very large | Most biochemical molecules are macromolecules, meaning that they are very large. Some contain thousands of monomer molecules. | Direct Question | Answer the following question given this paragraph:
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Most biochemical molecules are macromolecules, meaning that they are very large. Some contain thousands of monomer molecules.
Q: Most biochemical molecules are macromolecules, meaning that they are what?
A: | very large |
The name of a spinal cord region corresponds to the level at which spinal nerves pass through the what? | synovial fluid | lumbar foramina | notochord | intervertebral foramina | The Spinal Cord The description of the CNS is concentrated on the structures of the brain, but the spinal cord is another major organ of the system. Whereas the brain develops out of expansions of the neural tube into primary and then secondary vesicles, the spinal cord maintains the tube structure and is only speciali... | Direct Question | Answer the following question given this paragraph:
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The Spinal Cord The description of the CNS is concentrated on the structures of the brain, but the spinal cord is another major organ of the system. Whereas the brain develops out of expansions of the neural tube into primary and then secondary vesicles, the spinal ... | intervertebral foramina |
Tests for levels of what in blood allow a diabetic patient to regulate how much insulin to administer? | protein | alcohol | chloride | glucose | Laboratory testing has come to the local drug store or grocery store because of developments in chemistry. You can test your blood glucose using a simple portable device that runs a chemical test on the blood sample and tells you how much glucose is present, allowing a diabetic patient to regulate how much insulin to a... | Direct Question | Answer the following question given this paragraph:
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Laboratory testing has come to the local drug store or grocery store because of developments in chemistry. You can test your blood glucose using a simple portable device that runs a chemical test on the blood sample and tells you how much glucose is present, allowin... | glucose |
The process of breaking down food into nutrients is known as __________ | filtration | energy | absorption | digestion | As food is pushed through the GI tract by peristalsis, it undergoes digestion. Digestion is the process of breaking down food into nutrients. There are two types of digestion: mechanical digestion and chemical digestion. | Direct Question | Answer the following question given this paragraph:
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As food is pushed through the GI tract by peristalsis, it undergoes digestion. Digestion is the process of breaking down food into nutrients. There are two types of digestion: mechanical digestion and chemical digestion.
Q: The process of breaking down food into n... | digestion |
Reasoning can be broken down into two categories: deduction and? | invention | conduction | preduction | induction | Any useful hypothesis will allow predictions based on reasoning. Reasoning can be broken down into two categories: deduction and induction. Most reasoning in science is formed through induction. | Direct Question | Answer the following question given this paragraph:
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Any useful hypothesis will allow predictions based on reasoning. Reasoning can be broken down into two categories: deduction and induction. Most reasoning in science is formed through induction.
Q: Reasoning can be broken down into two categories: deduction and?
... | induction |
What are used to make maps of the moon and other planets? | rendering satellites | radio telescopes | topographical charts | imaging satellites | Astronomers use imaging satellites to study and make maps of the Moon and other planets. | Direct Question | Answer the following question given this paragraph:
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Astronomers use imaging satellites to study and make maps of the Moon and other planets.
Q: What are used to make maps of the moon and other planets?
A: | imaging satellites |
What term describes how closely packed the particles of matter are? | space | range | mass | density | Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density. Differences in density of matter explain many phenomena, not just why helium balloons rise. For example, differences in density of... | Direct Question | Answer the following question given this paragraph:
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Density is an important physical property of matter. It reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter has greater density. Differences in density of matter explain many phenomena, not just why helium... | density |
Populations of viruses do not grow through cell division because they? | non living | Static | Acidic | are not cells | Populations of viruses do not grow through cell division because they are not cells. Instead, they use the machinery and metabolism of a host cell to produce new copies of themselves. After infecting a host cell, a virion uses the cell’s ribosomes, enzymes, ATP, and other components to replicate. Viruses vary in how th... | Direct Question | Answer the following question given this paragraph:
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Populations of viruses do not grow through cell division because they are not cells. Instead, they use the machinery and metabolism of a host cell to produce new copies of themselves. After infecting a host cell, a virion uses the cell’s ribosomes, enzymes, ATP, and... | are not cells |
What is likely to happen to a parasite if it kills its host? | it mutates | it thrives | it adapts | it dies | Some parasites kill their host, but most do not. It’s easy to see why. If a parasite kills its host, the parasite is also likely to die. Instead, parasites usually cause relatively minor damage to their host. | Direct Question | Answer the following question given this paragraph:
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Some parasites kill their host, but most do not. It’s easy to see why. If a parasite kills its host, the parasite is also likely to die. Instead, parasites usually cause relatively minor damage to their host.
Q: What is likely to happen to a parasite if it kills i... | it dies |
What is a type of solid that lacks an ordered internal structure? | an elastic solid | ice | a sponge | an amorphous solid | An amorphous solid is a solid that lacks an ordered internal structure. | Direct Question | Answer the following question given this paragraph:
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An amorphous solid is a solid that lacks an ordered internal structure.
Q: What is a type of solid that lacks an ordered internal structure?
A: | an amorphous solid |
What is it called when you get the same result after repeating an experiment? | initiation | variable | control | replication | Getting the same result when an experiment is repeated is called replication. If research results can be replicated, it means they are more likely to be correct. | Direct Question | Answer the following question given this paragraph:
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Getting the same result when an experiment is repeated is called replication. If research results can be replicated, it means they are more likely to be correct.
Q: What is it called when you get the same result after repeating an experiment?
A: | replication |
What is the largest human organ? | lungs | stomach | brain | skin | human body system that includes the skin, nails, and hair. | Direct Question | Answer the following question given this paragraph:
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human body system that includes the skin, nails, and hair.
Q: What is the largest human organ?
A: | skin |
In the chest, the trachea divides as it enters the lungs to form the right and left what? | atrium | alveoli | ventricle | bronchi | In the chest, the trachea divides as it enters the lungs to form the right and left bronchi . The bronchi contain cartilage, which prevents them from collapsing. Mucus in the bronchi traps any remaining particles in air. Tiny, hair-like structures called cilia line the bronchi and sweep the particles and mucus toward t... | Direct Question | Answer the following question given this paragraph:
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In the chest, the trachea divides as it enters the lungs to form the right and left bronchi . The bronchi contain cartilage, which prevents them from collapsing. Mucus in the bronchi traps any remaining particles in air. Tiny, hair-like structures called cilia line ... | bronchi |
Many objects have color because they contain what? | salts | solvents | vitamins | pigments | Many objects have color because they contain pigments. A pigment is a substance that colors materials by reflecting light of certain wavelengths and absorbing light of other wavelengths. A very common pigment is the dark green pigment called chlorophyll, which is found in plants. Chlorophyll absorbs all but green wavel... | Direct Question | Answer the following question given this paragraph:
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Many objects have color because they contain pigments. A pigment is a substance that colors materials by reflecting light of certain wavelengths and absorbing light of other wavelengths. A very common pigment is the dark green pigment called chlorophyll, which is fo... | pigments |
What is the process of action potentials in myelinated axons jumping between the nodes of ranvier called? | pinworm conduction | photoreactive conduction | saltatory movement | saltatory conduction | Direct Question | Answer the following question given this paragraph:
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Q: What is the process of action potentials in myelinated axons jumping between the nodes of ranvier called?
A: | saltatory conduction | |
What do craters and rifts become when the fill with water? | grasses | rivers | creeks | lakes | Craters and rifts become lakes when they fill with water. Where does the water come from?. | Direct Question | Answer the following question given this paragraph:
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Craters and rifts become lakes when they fill with water. Where does the water come from?.
Q: What do craters and rifts become when the fill with water?
A: | lakes |
What kind of power does not produce any pollutants, but produces waste that can be difficult to dispose of? | solar | electrical | biofuel | nuclear | Nuclear power is a controversial subject in California and most other places. Nuclear power has no pollutants including no carbon emissions. However, power plants are not always safe. The long-term disposal of wastes is a problem that has not yet been solved. The future of nuclear power is murky. Find out more at: http... | Direct Question | Answer the following question given this paragraph:
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Nuclear power is a controversial subject in California and most other places. Nuclear power has no pollutants including no carbon emissions. However, power plants are not always safe. The long-term disposal of wastes is a problem that has not yet been solved. The fu... | nuclear |
What is the long, narrow tube that carries food from the pharynx to the stomach by the mechanism of peristalsis? | spinal cord | gallbladder | liver | esophagus | The esophagus is a long, narrow tube that carries food from the pharynx to the stomach. It has no other purpose. Food moves through the esophagus because of peristalsis. At the lower end of the esophagus, a circular muscle, called a sphincter, controls the opening to the stomach. The sphincter relaxes to let food pass ... | Direct Question | Answer the following question given this paragraph:
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The esophagus is a long, narrow tube that carries food from the pharynx to the stomach. It has no other purpose. Food moves through the esophagus because of peristalsis. At the lower end of the esophagus, a circular muscle, called a sphincter, controls the opening t... | esophagus |
What is the temperature at which condensation of water vapor occurs called? | the cooling point | the tipping point | the boiling point | the dew point | The temperature at which condensation of water vapor occurs is called the dew point. The dew point varies depending on air temperature and moisture content. | Direct Question | Answer the following question given this paragraph:
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The temperature at which condensation of water vapor occurs is called the dew point. The dew point varies depending on air temperature and moisture content.
Q: What is the temperature at which condensation of water vapor occurs called?
A: | the dew point |
Alkenes have double bonds while alkynes have what? | quadruple bonds | single bonds | equal bonds | triple bonds | Alkenes have double bonds; alkynes have triple bonds. Both undergo addition reactions. | Direct Question | Answer the following question given this paragraph:
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Alkenes have double bonds; alkynes have triple bonds. Both undergo addition reactions.
Q: Alkenes have double bonds while alkynes have what?
A: | triple bonds |
What is our main source of aluminum ore? | tin | coal | cobalt | bauxite | Weathering may concentrate some resources. In tropical climates, chemical weathering can be intense. Some minerals dissolve and water carries them away. This leaves behind the materials that are not soluble. Bauxite is aluminum oxide that collects this way. Bauxite is our main source of aluminum ore. | Direct Question | Answer the following question given this paragraph:
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Weathering may concentrate some resources. In tropical climates, chemical weathering can be intense. Some minerals dissolve and water carries them away. This leaves behind the materials that are not soluble. Bauxite is aluminum oxide that collects this way. Bauxite ... | bauxite |
Rapidly produced genetic vairants are found in organisms with what type of generation time? | oscillating | long | repeating | short | Direct Question | Answer the following question given this paragraph:
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Q: Rapidly produced genetic vairants are found in organisms with what type of generation time?
A: | short | |
What are the 2 primary hosts of ebola in central africa? | lions and elephants | hyenas and apes | apes and hippos | apes and bats | Several lethal viruses that cause viral hemorrhagic fever have been discovered, two of which are shown in the Figure below . Ebola outbreaks have been limited mainly to remote areas of the world. However, they have gained extensive media attention because of the high mortality rate—23 percent to 90 percent—depending on... | Direct Question | Answer the following question given this paragraph:
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Several lethal viruses that cause viral hemorrhagic fever have been discovered, two of which are shown in the Figure below . Ebola outbreaks have been limited mainly to remote areas of the world. However, they have gained extensive media attention because of the hig... | apes and bats |
Unlike prokaryotic cells, dna and rna synthesis in eukaryotic cells occurs in a separate compartment from synthesis of what? | acids | membrane | phenotype | protein | In eukaryotic cells, DNA and RNA synthesis occur in a separate compartment from protein synthesis. In prokaryotic cells, both processes occur together. What advantages might there be to separating the processes? What advantages might there be to having them occur together? The size of the genome in one of the most well... | Direct Question | Answer the following question given this paragraph:
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In eukaryotic cells, DNA and RNA synthesis occur in a separate compartment from protein synthesis. In prokaryotic cells, both processes occur together. What advantages might there be to separating the processes? What advantages might there be to having them occur to... | protein |
What important organelle (that would otherwise be centrally located and crucial to the cell's survival) do prokaryotic cells lack? | protons | electrons | molecules | nucleus | Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained within a nucleus, and many other organelles. All of thes... | Direct Question | Answer the following question given this paragraph:
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Cell division is simpler in prokaryotes than eukaryotes because prokaryotic cells themselves are simpler. Prokaryotic cells have a single circular chromosome, no nucleus, and few other organelles. Eukaryotic cells, in contrast, have multiple chromosomes contained wi... | nucleus |
What is the outer layer of an axon that acts like a layer of insulation, similar to the plastic that encases an electrical cord? | layer sheath | lipids sheath | nerve sheath | myelin sheath | The axon of many neurons has an outer layer called a myelin sheath (see Figure above ). Myelin is a lipid produced by a type of a glial cell known as a Schwann cell. The myelin sheath acts like a layer of insulation, similar to the plastic that encases an electrical cord. Regularly spaced nodes, or gaps, in the myelin ... | Direct Question | Answer the following question given this paragraph:
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The axon of many neurons has an outer layer called a myelin sheath (see Figure above ). Myelin is a lipid produced by a type of a glial cell known as a Schwann cell. The myelin sheath acts like a layer of insulation, similar to the plastic that encases an electrical... | myelin sheath |
What occurs when some members of a species become geographically separated? | reflective speciation | divergent speciation | symbiotic speciation | allopatric speciation | New species arise in the process of speciation. Allopatric speciation occurs when some members of a species become geographically separated. They then evolve genetic differences. If the differences prevent them from interbreeding with the original species, a new species has evolved. Sympatric speciation occurs without ... | Direct Question | Answer the following question given this paragraph:
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New species arise in the process of speciation. Allopatric speciation occurs when some members of a species become geographically separated. They then evolve genetic differences. If the differences prevent them from interbreeding with the original species, a new spe... | allopatric speciation |
What creatures evolved from a lobe-finned lungfish ancestor? | mice | birds | horses | amphibians | Fossil evidence shows that amphibians evolved about 365 million years ago from a lobe-finned lungfish ancestor. As the earliest land vertebrates, they were highly successful. Some of them were much larger than today’s amphibians. For more than 100 million years, amphibians remained the dominant land vertebrates. Then s... | Direct Question | Answer the following question given this paragraph:
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Fossil evidence shows that amphibians evolved about 365 million years ago from a lobe-finned lungfish ancestor. As the earliest land vertebrates, they were highly successful. Some of them were much larger than today’s amphibians. For more than 100 million years, amp... | amphibians |
What is the term for a mixture of two or more substances that has the same composition throughout? | structure | fluid | simple liquid | solution | Water is the main ingredient of many solutions. A solution is a mixture of two or more substances that has the same composition throughout. Some solutions are acids and some are bases. To understand acids and bases, you need to know more about pure water. In pure water (such as distilled water), a tiny fraction of wate... | Direct Question | Answer the following question given this paragraph:
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Water is the main ingredient of many solutions. A solution is a mixture of two or more substances that has the same composition throughout. Some solutions are acids and some are bases. To understand acids and bases, you need to know more about pure water. In pure wa... | solution |
What are flagellate protozoa that cause giardiasis? | plankton | diatoms | fungus | giardia | Giardia are flagellate protozoa that cause giardiasis . The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host’s small intestine, where they prevent the host from fully absorbing nutrients. They may also cause d... | Direct Question | Answer the following question given this paragraph:
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Giardia are flagellate protozoa that cause giardiasis . The parasites enter the body through food or water that has been contaminated by feces of infected people or animals. The protozoa attach to the lining of the host’s small intestine, where they prevent the host... | giardia |
Rna and dna are types of what biochemical compounds containing the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus? | amino acids | hormones | nitrous acids | nucleic acids | Nucleic acids are one of four classes of biochemical compounds. (The other three classes are carbohydrates, proteins, and lipids. ) Nucleic acids include RNA (ribonucleic acid) as well as DNA (deoxyribonucleic acid). Both types of nucleic acids contain the elements carbon, hydrogen, oxygen, nitrogen, and phosphorus. | Direct Question | Answer the following question given this paragraph:
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Nucleic acids are one of four classes of biochemical compounds. (The other three classes are carbohydrates, proteins, and lipids. ) Nucleic acids include RNA (ribonucleic acid) as well as DNA (deoxyribonucleic acid). Both types of nucleic acids contain the elements ... | nucleic acids |
What are the contacts between neurons called? | electrodes | neurapses | impulses | synapses | 12.5 Communication Between Neurons The basis of the electrical signal within a neuron is the action potential that propagates down the axon. For a neuron to generate an action potential, it needs to receive input from another source, either another neuron or a sensory stimulus. That input will result in opening ion cha... | Direct Question | Answer the following question given this paragraph:
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12.5 Communication Between Neurons The basis of the electrical signal within a neuron is the action potential that propagates down the axon. For a neuron to generate an action potential, it needs to receive input from another source, either another neuron or a senso... | synapses |
What is the color of the powder of a mineral? | blue | gray | organic | streak | Streak is the color of the powder of a mineral. To do a streak test, you scrape the mineral across an unglazed porcelain plate. The plate is harder than many minerals, causing the minerals to leave a streak of powder on the plate. The color of the streak often differs from the color of the larger mineral sample, as Fig... | Direct Question | Answer the following question given this paragraph:
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Streak is the color of the powder of a mineral. To do a streak test, you scrape the mineral across an unglazed porcelain plate. The plate is harder than many minerals, causing the minerals to leave a streak of powder on the plate. The color of the streak often diffe... | streak |
What basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures? | flower | root | leaf | stem | Direct Question | Answer the following question given this paragraph:
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Q: What basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures?
A: | stem | |
What type of compound is essential to life? | nitrogen | carbon | oxygen | water | Water is essential to life because chemical reactions within cells take place in water. Most people can survive only a few days without consuming water to replace their water losses. How do you lose water?. | Direct Question | Answer the following question given this paragraph:
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Water is essential to life because chemical reactions within cells take place in water. Most people can survive only a few days without consuming water to replace their water losses. How do you lose water?.
Q: What type of compound is essential to life?
A: | water |
Which part of the ear amplifies the sound waves? | cochlea | eardrum | ear canal | middle ear | The outer ear catches sound waves and funnels them to the middle ear. The middle ear amplifies the sound waves and passes them to the inner ear. The inner ear changes the sound waves to electrical signals. The signals travel to the brain, which interprets the sounds. | Direct Question | Answer the following question given this paragraph:
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The outer ear catches sound waves and funnels them to the middle ear. The middle ear amplifies the sound waves and passes them to the inner ear. The inner ear changes the sound waves to electrical signals. The signals travel to the brain, which interprets the sounds... | middle ear |
The shape of a virus is determined by the type and arrangement of proteins in its what? | nuclei | enamel | anode | capsid | 22.1 Introduction Viruses are the smallest biological particle (the tiniest are only 20 nm in diameter). However, they are not biological organisms so they are not classified in any kingdom of living things. They do not have any organelles and cannot respire or perform metabolic functions. Viruses are merely strands of... | Direct Question | Answer the following question given this paragraph:
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22.1 Introduction Viruses are the smallest biological particle (the tiniest are only 20 nm in diameter). However, they are not biological organisms so they are not classified in any kingdom of living things. They do not have any organelles and cannot respire or perf... | capsid |
What is the rising and sinking of warm and cooler material called? | diffusion | depression | conveyance | convection | Hot lower mantle material rises upward ( Figure below ). As it rises, it cools. At the top of the mantle it moves horizontally. Over time it becomes cool and dense enough that it sinks. Back at the bottom of the mantle, it travels horizontally. Eventually the material gets to the location where warm mantle material is ... | Direct Question | Answer the following question given this paragraph:
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Hot lower mantle material rises upward ( Figure below ). As it rises, it cools. At the top of the mantle it moves horizontally. Over time it becomes cool and dense enough that it sinks. Back at the bottom of the mantle, it travels horizontally. Eventually the materi... | convection |
What is a group of connected cells that have a similar function within an organism called? | colony | organ | nucleus | tissue | A tissue is a group of connected cells that have a similar function within an organism. More complex organisms such as jellyfish, coral, and sea anemones have a tissue level of organization. For example, jellyfish have tissues that have separate protective, digestive, and sensory functions. | Direct Question | Answer the following question given this paragraph:
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A tissue is a group of connected cells that have a similar function within an organism. More complex organisms such as jellyfish, coral, and sea anemones have a tissue level of organization. For example, jellyfish have tissues that have separate protective, digestiv... | tissue |
The number of what subatomic particles can vary between atoms of the same element? | neurons | protons | electrons | neutrons | As stated earlier, not all atoms of a given element are identical. Specifically, the number of neutrons in the nucleus can vary for many elements. As an example, naturally occurring carbon exists in three forms, which are illustrated in Figure below . | Direct Question | Answer the following question given this paragraph:
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As stated earlier, not all atoms of a given element are identical. Specifically, the number of neutrons in the nucleus can vary for many elements. As an example, naturally occurring carbon exists in three forms, which are illustrated in Figure below .
Q: The numbe... | neutrons |
Water is recycled constantly through which system? | the troposphere | the hydropshere | the habitat | the ecosystem | Water is recycled constantly through the ecosystem. That means any water you drank today has been around for millions of years. You could be drinking water that was once drunk by George Washington, the first humans, or even the dinosaurs. | Direct Question | Answer the following question given this paragraph:
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Water is recycled constantly through the ecosystem. That means any water you drank today has been around for millions of years. You could be drinking water that was once drunk by George Washington, the first humans, or even the dinosaurs.
Q: Water is recycled cons... | the ecosystem |
The process in which organ systems work to maintain a stable internal environment is called what? | ketosis | consciousness | thrombosis | homeostasis | The process in which organ systems work to maintain a stable internal environment is called homeostasis . Keeping a stable internal environment requires constant adjustments. Here are just three of the many ways that human organ systems help the body maintain homeostasis:. | Direct Question | Answer the following question given this paragraph:
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The process in which organ systems work to maintain a stable internal environment is called homeostasis . Keeping a stable internal environment requires constant adjustments. Here are just three of the many ways that human organ systems help the body maintain homeos... | homeostasis |
What do scientist's believe mercury's core is mostly made of? | helium gas | water | quicksilver | melted iron | Figure below shows a diagram of Mercury’s interior. Mercury is one of the densest planets. Scientists think that the interior contains a large core made mostly of melted iron. Mercury's core takes up about 42% of the planet's volume. Mercury's highly cratered surface is evidence that Mercury is not geologically active. | Direct Question | Answer the following question given this paragraph:
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Figure below shows a diagram of Mercury’s interior. Mercury is one of the densest planets. Scientists think that the interior contains a large core made mostly of melted iron. Mercury's core takes up about 42% of the planet's volume. Mercury's highly cratered surfac... | melted iron |
What material comprises the sun and other stars, as well as lightning and the northern lights? | gas | aurora | gamma | plasma | The sun and other stars consist of plasma. Plasma is also found naturally in lightning and the northern and southern lights. Human-made plasma is found in fluorescent lights, plasma TV screens, and plasma spheres. | Direct Question | Answer the following question given this paragraph:
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The sun and other stars consist of plasma. Plasma is also found naturally in lightning and the northern and southern lights. Human-made plasma is found in fluorescent lights, plasma TV screens, and plasma spheres.
Q: What material comprises the sun and other stars... | plasma |
The function of which organ is to filter blood and form urine? | gallbladder | liver | lungs | kidneys | Direct Question | Answer the following question given this paragraph:
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Q: The function of which organ is to filter blood and form urine?
A: | kidneys | |
The attraction between all objects in the universe is known as ______. | magnetism | variation | electricity | gravity | All objects in the universe have an attraction to each other. This attraction is known as gravity ( Figure below ). The strength of the force of gravity depends on two things. One is the mass of the objects. The other is the distance between the objects. As an object's mass increases, the attraction increases. As the d... | Direct Question | Answer the following question given this paragraph:
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All objects in the universe have an attraction to each other. This attraction is known as gravity ( Figure below ). The strength of the force of gravity depends on two things. One is the mass of the objects. The other is the distance between the objects. As an objec... | gravity |
Friction causes the molecules on rubbing surfaces to move faster, which produces what? | cold | life | precipitation | heat | You know that friction produces heat. That’s why rubbing your hands together makes them warmer. But do you know why the rubbing produces heat? Friction causes the molecules on rubbing surfaces to move faster, so they have more heat energy. Heat from friction can be useful. It not only warms your hands. It also lets you... | Direct Question | Answer the following question given this paragraph:
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You know that friction produces heat. That’s why rubbing your hands together makes them warmer. But do you know why the rubbing produces heat? Friction causes the molecules on rubbing surfaces to move faster, so they have more heat energy. Heat from friction can be ... | heat |
The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents what? | Respiration | extinction | exhaustion | dehydration | Most prokaryotes have a peptidoglycan cell wall and many have a polysaccharide capsule (Figure 4.5). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces in its environment. Some prokaryotes have flagella, pil... | Direct Question | Answer the following question given this paragraph:
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Most prokaryotes have a peptidoglycan cell wall and many have a polysaccharide capsule (Figure 4.5). The cell wall acts as an extra layer of protection, helps the cell maintain its shape, and prevents dehydration. The capsule enables the cell to attach to surfaces i... | dehydration |
What's another term for egg-laying mammals? | herbivores | viviparus | amphibians | monotremes | There are very few living species of monotremes, or egg-laying mammals. They include the echidna and platypus, both pictured in Figure below . Monotremes are found only in Australia and the nearby island of New Guinea. | Direct Question | Answer the following question given this paragraph:
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There are very few living species of monotremes, or egg-laying mammals. They include the echidna and platypus, both pictured in Figure below . Monotremes are found only in Australia and the nearby island of New Guinea.
Q: What's another term for egg-laying mammals... | monotremes |
What code is the same in all living things and shows that all organisms are related by descent from a common ancestor? | intrinsic | descendant | biochemical | genetic | The genetic code is the same in all living things. This shows that all organisms are related by descent from a common ancestor. | Direct Question | Answer the following question given this paragraph:
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The genetic code is the same in all living things. This shows that all organisms are related by descent from a common ancestor.
Q: What code is the same in all living things and shows that all organisms are related by descent from a common ancestor?
A: | genetic |
All animals that derive energy from food are classified as what? | heliotrophs | lifeforms | paleotrophs | heterotrophs | Figure 15.2 All animals that derive energy from food are heterotrophs. The (a) black bear is an omnivore, eating both plants and animals. The (b) heartworm Dirofilaria immitis is a parasite that derives energy from its hosts. It spends its larval stage in mosquitos and its adult stage infesting the hearts of dogs and o... | Direct Question | Answer the following question given this paragraph:
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Figure 15.2 All animals that derive energy from food are heterotrophs. The (a) black bear is an omnivore, eating both plants and animals. The (b) heartworm Dirofilaria immitis is a parasite that derives energy from its hosts. It spends its larval stage in mosquitos ... | heterotrophs |
Through which process is the human gene for insulin placed into bacteria? | absorption | migration | mutation | transformation | Through the process of transformation, the human gene for insulin is placed into bacteria. The bacteria then use that gene to make a protein. The protein can be separated from the bacteria and then used to treat patients. The mass production of insulin by bacteria made this medicine much more affordable. | Direct Question | Answer the following question given this paragraph:
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Through the process of transformation, the human gene for insulin is placed into bacteria. The bacteria then use that gene to make a protein. The protein can be separated from the bacteria and then used to treat patients. The mass production of insulin by bacteria m... | transformation |
What is a symbiotic relationship in which both species benefit? | inorganic | detrimental | parasitism | mutualism | Mutualism is a symbiotic relationship in which both species benefit. An example of mutualism involves goby fish and shrimp (see Figure below ). The nearly blind shrimp and the fish spend most of their time together. The shrimp maintains a burrow in the sand in which both the fish and shrimp live. When a predator comes ... | Direct Question | Answer the following question given this paragraph:
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Mutualism is a symbiotic relationship in which both species benefit. An example of mutualism involves goby fish and shrimp (see Figure below ). The nearly blind shrimp and the fish spend most of their time together. The shrimp maintains a burrow in the sand in which... | mutualism |
What is the term for longer chains of monosaccharides ? | oligosaccharides | proteins | hydrocarbons | polysaccharides | Longer chains of monosaccharides are referred to as polysaccharides . Starch, glycogen, and cellulose are three extremely common polysaccharides made entirely out of glucose molecules. The differences lie in the types of bonds between the glucose units and the extent of branching in the carbohydrate chain. Starch is fo... | Direct Question | Answer the following question given this paragraph:
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Longer chains of monosaccharides are referred to as polysaccharides . Starch, glycogen, and cellulose are three extremely common polysaccharides made entirely out of glucose molecules. The differences lie in the types of bonds between the glucose units and the exten... | polysaccharides |
Electrical potential energy can be described by the equation pe = qv, where q is the electric charge and v is what? | frequency | amplitude | wavelength density | voltage | This equation is based on the conservation of energy and conservation of charge. Electrical potential energy can be described by the equation PE = qV , where q is the electric charge and V is the voltage. Thus the energy supplied by the source is qV , while that dissipated by the resistors is. | Direct Question | Answer the following question given this paragraph:
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This equation is based on the conservation of energy and conservation of charge. Electrical potential energy can be described by the equation PE = qV , where q is the electric charge and V is the voltage. Thus the energy supplied by the source is qV , while that dis... | voltage |
What are broad explanations that are widely accepted as true? | scientific hypotheses | scientific experiments | informal theories | scientific theories | Scientific theories are broad explanations that are widely accepted as true. This is because they are supported by a great deal of evidence. | Direct Question | Answer the following question given this paragraph:
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Scientific theories are broad explanations that are widely accepted as true. This is because they are supported by a great deal of evidence.
Q: What are broad explanations that are widely accepted as true?
A: | scientific theories |
What process is at work when warm air or water rises, and cool air or water sinks? | moisture | evaporation | radiation | convection | Warmer, lighter air is more buoyant than the cooler air above it. So the warm air rises. The cooler air is denser than the air beneath it. So it sinks down. This is convection: warm air rises, and cool air sinks. Warm fluids can undergo convection as well. This is described in the chapter Plate Tectonics . | Direct Question | Answer the following question given this paragraph:
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Warmer, lighter air is more buoyant than the cooler air above it. So the warm air rises. The cooler air is denser than the air beneath it. So it sinks down. This is convection: warm air rises, and cool air sinks. Warm fluids can undergo convection as well. This is d... | convection |
If force is applied further away from a pivot point, than what kind of acceleration will be greater? | parameters | circular | rectangular | angular | 10.3 Dynamics of Rotational Motion: Rotational Inertia If you have ever spun a bike wheel or pushed a merry-go-round, you know that force is needed to change angular velocity as seen in Figure 10.10. In fact, your intuition is reliable in predicting many of the factors that are involved. For example, we know that a doo... | Direct Question | Answer the following question given this paragraph:
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10.3 Dynamics of Rotational Motion: Rotational Inertia If you have ever spun a bike wheel or pushed a merry-go-round, you know that force is needed to change angular velocity as seen in Figure 10.10. In fact, your intuition is reliable in predicting many of the fact... | angular |
The kinetic-molecular theory as it applies to gases has how many basic assumptions? | seven | four | two | five | The kinetic-molecular theory as it applies to gases has five basic assumptions. | Direct Question | Answer the following question given this paragraph:
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The kinetic-molecular theory as it applies to gases has five basic assumptions.
Q: The kinetic-molecular theory as it applies to gases has how many basic assumptions?
A: | five |
During photosynthesis, what is energy from the sun converted to after entering a plant? | Proteins | Carbon | chloride | glucose | Cellular respiration and photosynthesis are direct opposite reactions. Energy from the sun enters a plant and is converted into glucose during photosynthesis. Some of the energy is used to make ATP in the mitochondria during cellular respiration, and some is lost to the environment as heat. | Direct Question | Answer the following question given this paragraph:
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Cellular respiration and photosynthesis are direct opposite reactions. Energy from the sun enters a plant and is converted into glucose during photosynthesis. Some of the energy is used to make ATP in the mitochondria during cellular respiration, and some is lost to... | glucose |
Formic acid is found in the secretions of? | stomach acid | sweat glands | acid rain | stinging ants | where R can be an alkyl group, an aryl group, or a hydrogen atom. The simplest example, HCO2H, is formic acid, so called because it is found in the secretions of stinging ants (from the Latin formica, meaning “ant”). Another example is acetic acid(CH3CO2H), which is found in vinegar. Like many acids, carboxylic acids t... | Direct Question | Answer the following question given this paragraph:
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where R can be an alkyl group, an aryl group, or a hydrogen atom. The simplest example, HCO2H, is formic acid, so called because it is found in the secretions of stinging ants (from the Latin formica, meaning “ant”). Another example is acetic acid(CH3CO2H), which is... | stinging ants |
What do hydrophilic substances have an affinity for? | heat | air | soil | water | Direct Question | Answer the following question given this paragraph:
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Q: What do hydrophilic substances have an affinity for?
A: | water | |
What is a structure that consists of two or more types of tissues that work together to do the same job? | organism | cell | organ system | organ | After tissues, organs are the next level of organization of the human body. An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples of human organs include the brain, heart, lungs, skin, and kidneys. Human organs are organized into organ systems, many of whi... | Direct Question | Answer the following question given this paragraph:
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After tissues, organs are the next level of organization of the human body. An organ is a structure that consists of two or more types of tissues that work together to do the same job. Examples of human organs include the brain, heart, lungs, skin, and kidneys. Huma... | organ |
What is formed when amino acids are linked together in a long chain? | water molecule | amino acid | hormones | protein | Many amino acids can be linked together to form a long chain known as a protein . These linkages are formed when the carboxylic acid of one amino acid reacts with the amine of another to produce an amide (see Figure below ). | Direct Question | Answer the following question given this paragraph:
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Many amino acids can be linked together to form a long chain known as a protein . These linkages are formed when the carboxylic acid of one amino acid reacts with the amine of another to produce an amide (see Figure below ).
Q: What is formed when amino acids are ... | protein |
Both diffusion and effusion are related to the speed at which what objects move? | solids | electricity | copper molecules | gas molecules | A related process to diffusion is the effusion. Effusion is the process of a confined gas escaping through a tiny hole in its container. Effusion can be observed by the fact that a helium-filled balloon will stop floating and sink to the floor after a day or so. This is because the helium gas effuses through tiny pores... | Direct Question | Answer the following question given this paragraph:
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A related process to diffusion is the effusion. Effusion is the process of a confined gas escaping through a tiny hole in its container. Effusion can be observed by the fact that a helium-filled balloon will stop floating and sink to the floor after a day or so. Thi... | gas molecules |
Baroreceptors in the aortic arch and carotid sinuses monitor what level in the body? | temperature | hunger | air intake | blood pressure | 25.9 Regulation of Fluid Volume and Composition The major hormones regulating body fluids are ADH, aldosterone and ANH. Progesterone is similar in structure to aldosterone and can bind to and weakly stimulate aldosterone receptors, providing a similar but diminished response. Blood pressure is a reflection of blood vol... | Direct Question | Answer the following question given this paragraph:
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25.9 Regulation of Fluid Volume and Composition The major hormones regulating body fluids are ADH, aldosterone and ANH. Progesterone is similar in structure to aldosterone and can bind to and weakly stimulate aldosterone receptors, providing a similar but diminished... | blood pressure |
The electronegativity of an element increases with increasing of what state? | conduction | isolation | evaporation | oxidation | Oxides As with the halides, the nature of bonding in oxides of the transition elements is determined by the oxidation state of the metal. Oxides with low oxidation states tend to be more ionic, whereas those with higher oxidation states are more covalent. These variations in bonding are because the electronegativities ... | Direct Question | Answer the following question given this paragraph:
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Oxides As with the halides, the nature of bonding in oxides of the transition elements is determined by the oxidation state of the metal. Oxides with low oxidation states tend to be more ionic, whereas those with higher oxidation states are more covalent. These vari... | oxidation |
Animals require air, water, and what in order to live and survive? | shade | time | mates | food? | Direct Question | Answer the following question given this paragraph:
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Q: Animals require air, water, and what in order to live and survive?
A: | food? | |
How many types of bosons are there? | five | three | one | four | There are four known types of bosons, which are force-carrying particles. Each of these bosons carries a different fundamental force between interacting particles. In addition, there is a particle which may exist, called the "Higgs Boson", which gives objects the masses they have. Some types of bosons have mass; others... | Direct Question | Answer the following question given this paragraph:
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There are four known types of bosons, which are force-carrying particles. Each of these bosons carries a different fundamental force between interacting particles. In addition, there is a particle which may exist, called the "Higgs Boson", which gives objects the ma... | four |
What astronomical phenomenon, formed of split asteroids or planetary rocks, provides clues about our solar system? | stars | galaxies | comets | meteorites | Meteorites provide clues about our solar system. Many were formed in the early solar system ( Figure below ). Some are from asteroids that have split apart. A few are rocks from nearby bodies like Mars. For this to happen, an asteroid smashed into Mars and sent up debris. A bit of the debris entered Earth’s atmosphere ... | Direct Question | Answer the following question given this paragraph:
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Meteorites provide clues about our solar system. Many were formed in the early solar system ( Figure below ). Some are from asteroids that have split apart. A few are rocks from nearby bodies like Mars. For this to happen, an asteroid smashed into Mars and sent up d... | meteorites |
An electron possesses both particle and these? | land properties | shock properties | surging properties | wave properties | An electron possesses both particle and wave properties. CONCEPTUAL PROBLEMS 1. | Direct Question | Answer the following question given this paragraph:
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An electron possesses both particle and wave properties. CONCEPTUAL PROBLEMS 1.
Q: An electron possesses both particle and these?
A: | wave properties |
What are mutant versions of normal genes called? | extinction - oncogenes | antecedent - oncogenes | anti-oncogenes | proto-oncogenes | Direct Question | Answer the following question given this paragraph:
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Q: What are mutant versions of normal genes called?
A: | proto-oncogenes | |
The heart and a network of blood vessels that run throughout the body make up what organ system? | immune system | lymphatic system | respiratory system | cardiovascular system | The organs that make up the cardiovascular system are the heart and a network of blood vessels that run throughout the body. The blood in the cardiovascular system is a liquid connective tissue. Figure below shows the heart and major vessels through which blood flows in the system. The heart is basically a pump that ke... | Direct Question | Answer the following question given this paragraph:
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The organs that make up the cardiovascular system are the heart and a network of blood vessels that run throughout the body. The blood in the cardiovascular system is a liquid connective tissue. Figure below shows the heart and major vessels through which blood flow... | cardiovascular system |
When a predator kills and eats its prey, what sort of predation is this referred to as? | predestined | false | just | true | True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey dies in the mouth or the digestive system of the predat... | Direct Question | Answer the following question given this paragraph:
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True predation is when a predator kills and eats its prey. Some predators of this type, such as jaguars, kill large prey. They tear it apart and chew it before eating it. Others, like bottlenose dolphins or snakes, may eat their prey whole. In some cases, the prey d... | true |
Pressure, volume, and temperature are related by which law? | Murphy's Law | Law of Conservation | law of inertia | gas law | Pressure, volume, and temperature are related by the combined gas law. | Direct Question | Answer the following question given this paragraph:
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Pressure, volume, and temperature are related by the combined gas law.
Q: Pressure, volume, and temperature are related by which law?
A: | gas law |
Different forms, or allotropes, of carbon are diamond, graphite, and what? | carbonite | ligands | vesicles | fullerenes | Different forms, or allotropes, of carbon are diamond, graphite, and fullerenes. | Direct Question | Answer the following question given this paragraph:
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Different forms, or allotropes, of carbon are diamond, graphite, and fullerenes.
Q: Different forms, or allotropes, of carbon are diamond, graphite, and what?
A: | fullerenes |
What is the process in which organisms reproduce sexually by joining gametes called? | stimulation | propagation | migration | fertilization | Organisms that reproduce sexually by joining gametes , a process known as fertilization , must have a mechanism to produce haploid gametes. This mechanism is meiosis , a type of cell division that halves the number of chromosomes. Meiosis occurs only in gamete producing cells within the gonads. During meiosis the pairs... | Direct Question | Answer the following question given this paragraph:
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Organisms that reproduce sexually by joining gametes , a process known as fertilization , must have a mechanism to produce haploid gametes. This mechanism is meiosis , a type of cell division that halves the number of chromosomes. Meiosis occurs only in gamete produ... | fertilization |
What is the force of attraction between things that have mass | momentum | friction | motion | gravity | Gravity has traditionally been defined as a force of attraction between things that have mass. The strength of gravity between two objects depends on their mass and their distance apart. | Direct Question | Answer the following question given this paragraph:
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Gravity has traditionally been defined as a force of attraction between things that have mass. The strength of gravity between two objects depends on their mass and their distance apart.
Q: What is the force of attraction between things that have mass
A: | gravity |
Mitosis and meiosis are two types of what process, with dramatically different products? | cell diffusion | cell transition | cell solution | cell division | Mitosis and meiosis are two types of cell division, with dramatically different products. Mitosis begins with a diploid somatic cell and ends with two genetically identical diploid cells. Meiosis begins with a diploid cell and produces four haploid genetically unique cells that form gametes. | Direct Question | Answer the following question given this paragraph:
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Mitosis and meiosis are two types of cell division, with dramatically different products. Mitosis begins with a diploid somatic cell and ends with two genetically identical diploid cells. Meiosis begins with a diploid cell and produces four haploid genetically uniqu... | cell division |
Zinc reacting with hydrochloric acid produces bubbles of which gas? | mustard | carbon | helium | hydrogen | Zinc reacting with hydrochloric acid produces bubbles of hydrogen gas. | Direct Question | Answer the following question given this paragraph:
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Zinc reacting with hydrochloric acid produces bubbles of hydrogen gas.
Q: Zinc reacting with hydrochloric acid produces bubbles of which gas?
A: | hydrogen |
Water gains and loses what more slowly than does land, affecting seasonal conditions inland and on the coast? | minerals | volume | humidity | heat | Temperature falls from the equator to the poles. Therefore, major temperature zones are based on latitude. They include tropical, temperate, and arctic zones (see Figure below ). However, other factors besides latitude may also influence temperature. For example, land near the ocean may have cooler summers and warmer w... | Direct Question | Answer the following question given this paragraph:
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Temperature falls from the equator to the poles. Therefore, major temperature zones are based on latitude. They include tropical, temperate, and arctic zones (see Figure below ). However, other factors besides latitude may also influence temperature. For example, la... | heat |
Covalent solutes separate into what when dissolved? | true molecules | second molecules | new molecules | individual molecules | Ionic solutes separate into individual ions when they dissolve. Covalent solutes separate into individual molecules. | Direct Question | Answer the following question given this paragraph:
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Ionic solutes separate into individual ions when they dissolve. Covalent solutes separate into individual molecules.
Q: Covalent solutes separate into what when dissolved?
A: | individual molecules |
What term indicates moles per liter, whereas molality is moles per kilogram of solvent? | kilocalorie | pollenation | abundance | molarity | A N SW E R S 1. Molarity is moles per liter, whereas molality is moles per kilogram of solvent. | Direct Question | Answer the following question given this paragraph:
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A N SW E R S 1. Molarity is moles per liter, whereas molality is moles per kilogram of solvent.
Q: What term indicates moles per liter, whereas molality is moles per kilogram of solvent?
A: | molarity |
Many of the hormones are secreted in response to what signals of the body? | heart system signals | nose system signals | skeletal system signals | nervous system signals | may be located in organs or tissues that have functions in addition to hormone production. Hormones circulate throughout the body and stimulate a response in cells that have receptors able to bind with them. The changes brought about in the receiving cells affect the functioning of the organ system to which they belong... | Direct Question | Answer the following question given this paragraph:
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may be located in organs or tissues that have functions in addition to hormone production. Hormones circulate throughout the body and stimulate a response in cells that have receptors able to bind with them. The changes brought about in the receiving cells affect th... | nervous system signals |
What are two of the most common vision problems? | cross-eye and blindness | blindness and astigmatism | myopia and nearsightedness | nearsightedness and farsightedness | Many people have vision problems. Often, the problem is due to the shape of the eyes and how they focus light. Two of the most common vision problems are nearsightedness and farsightedness. | Direct Question | Answer the following question given this paragraph:
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Many people have vision problems. Often, the problem is due to the shape of the eyes and how they focus light. Two of the most common vision problems are nearsightedness and farsightedness.
Q: What are two of the most common vision problems?
A: | nearsightedness and farsightedness |
Hydrochloric acid is formed when hcl is dissolved into what? | plasma | blood | sodium | water | When HCl is dissolved into water, it is called hydrochloric acid. Ionic compounds and some polar compounds are completely broken apart into ions and thus conduct a current very well. A strong electrolyte is a solution in which a large fraction of the dissolved solute exists as ions. | Direct Question | Answer the following question given this paragraph:
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When HCl is dissolved into water, it is called hydrochloric acid. Ionic compounds and some polar compounds are completely broken apart into ions and thus conduct a current very well. A strong electrolyte is a solution in which a large fraction of the dissolved solut... | water |
Atoms of the same element that have different masses are called what? | mutations | variations | radioactive | isotopes | Isotopes are atoms of the same element that have different masses. | Direct Question | Answer the following question given this paragraph:
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Isotopes are atoms of the same element that have different masses.
Q: Atoms of the same element that have different masses are called what?
A: | isotopes |
What term is used to describe potential energy due to an object’s shape? | kinetic energy | stimulated potential energy | flexible energy | elastic potential energy | Irrigation is the single biggest use of water. Overhead irrigation wastes a lot of water. Drip irrigation ( Figure below ) wastes a lot less. Water pipes run over the surface of the ground. Tiny holes in the pipes are placed close to each plant. Water slowly drips out of the holes and soaks into the soil around the pla... | Direct Question | Answer the following question given this paragraph:
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Irrigation is the single biggest use of water. Overhead irrigation wastes a lot of water. Drip irrigation ( Figure below ) wastes a lot less. Water pipes run over the surface of the ground. Tiny holes in the pipes are placed close to each plant. Water slowly drips o... | elastic potential energy |
What property is characterized by eddies and swirls that mix layers of fluid together, unlike laminar flow? | evaporation | combustion | compression | turbulence | 12.4 Viscosity and Laminar Flow; Poiseuille’s Law • Laminar flow is characterized by smooth flow of the fluid in layers that do not mix. • Turbulence is characterized by eddies and swirls that mix layers of fluid together. • Fluid viscosity η is due to friction within a fluid. Representative values are given in Table 1... | Direct Question | Answer the following question given this paragraph:
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12.4 Viscosity and Laminar Flow; Poiseuille’s Law • Laminar flow is characterized by smooth flow of the fluid in layers that do not mix. • Turbulence is characterized by eddies and swirls that mix layers of fluid together. • Fluid viscosity η is due to friction with... | turbulence |
What process refers to a separation of charge within an atom or molecule? | rotation | diffusion | convection | polarization | material, and is intimately related to the polarizability of the material. Things Great and Small The Submicroscopic Origin of Polarization Polarization is a separation of charge within an atom or molecule. As has been noted, the planetary model of the atom pictures it as having a positive nucleus orbited by negative e... | Direct Question | Answer the following question given this paragraph:
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material, and is intimately related to the polarizability of the material. Things Great and Small The Submicroscopic Origin of Polarization Polarization is a separation of charge within an atom or molecule. As has been noted, the planetary model of the atom pictures... | polarization |
What is the largest cartilaginous fish? | sturgeon | dolphin | blue whale | whale shark | Mike Johnston. Whale sharks are the largest cartilaginous fish . CC BY 2.0. | Direct Question | Answer the following question given this paragraph:
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Mike Johnston. Whale sharks are the largest cartilaginous fish . CC BY 2.0.
Q: What is the largest cartilaginous fish?
A: | whale shark |
Capillaries in the chorionic villi filter fetal wastes out of the blood and return clean, oxygenated blood to the fetus through what? | skin vein | separates vein | Back Vein | umbilical vein | The placenta develops throughout the embryonic period and during the first several weeks of the fetal period; placentation is complete by weeks 14–16. As a fully developed organ, the placenta provides nutrition and excretion, respiration, and endocrine function (Table 28.1 and Figure 28.12). It receives blood from the ... | Direct Question | Answer the following question given this paragraph:
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The placenta develops throughout the embryonic period and during the first several weeks of the fetal period; placentation is complete by weeks 14–16. As a fully developed organ, the placenta provides nutrition and excretion, respiration, and endocrine function (Tab... | umbilical vein |
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