question stringlengths 46 492 | answer stringclasses 4 values | source stringclasses 2 values |
|---|---|---|
What type of organism is commonly used in preparation of foods such as cheese and yogurt?
Choices:
A. gymnosperms
B. protozoa
C. viruses
D. mesophilic organisms | D | allenai/sciq |
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. coriolis effect
B. centrifugal effect
C. muon effect
D. tropical effect | A | allenai/sciq |
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. unbalanced
C. reactive
D. exothermic | D | allenai/sciq |
What is the least dangerous radioactive decay?
Choices:
A. beta decay
B. gamma decay
C. alpha decay
D. zeta decay | C | allenai/sciq |
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. greenhouse gases
C. magma
D. smoke and ash | D | allenai/sciq |
When a meteoroid reaches earth, what is the remaining object called?
Choices:
A. comet
B. meteor
C. meteorite
D. orbit | C | allenai/sciq |
What kind of a reaction occurs when a substance reacts quickly with oxygen?
Choices:
A. Fluid Reaction
B. invention reaction
C. nitrogen reaction
D. combustion reaction | D | allenai/sciq |
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. species complex
B. ring species
C. surface species
D. fitting species | B | allenai/sciq |
Alpha emission is a type of what?
Choices:
A. light
B. radiation
C. heat
D. radioactivity | D | allenai/sciq |
What is the stored food in a seed called?
Choices:
A. endosperm
B. membrane
C. larval
D. pollin | A | allenai/sciq |
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. usually metal
C. Trap metal
D. much metal | A | allenai/sciq |
What is controlled by both genes and experiences in a given envionment?
Choices:
A. animal behaviors
B. learned behaviors
C. instincts
D. reflexes | A | allenai/sciq |
What tells you how much of the food you should eat to get the nutrients listed on the label?
Choices:
A. longer size
B. serving size
C. scoop size
D. regular size | B | allenai/sciq |
What are used to write nuclear equations for radioactive decay?
Choices:
A. radioactive symbols
B. critical symbols
C. trigonometric symbols
D. nuclear symbols | D | allenai/sciq |
What is controlled by regulatory proteins that bind to regulatory elements on dna?
Choices:
A. substance transcription
B. gene transcription
C. amino acids
D. mRNA | B | allenai/sciq |
Boron only occurs naturally in compounds with what element?
Choices:
A. nitrogen
B. helium
C. carbon
D. oxygen | D | allenai/sciq |
What organ systems link exchange surfaces with cells throughout the body?
Choices:
A. vascular
B. nervous
C. circulatory
D. pulmonary | C | allenai/sciq |
What occurs when the immune system attacks a harmless substance that enters the body from the outside?
Choices:
A. allergy
B. plague
C. nausea
D. panic attack | A | allenai/sciq |
Fertilization is the union of a sperm and egg, resulting in the formation of what?
Choices:
A. a bacteriophage
B. a cytoplasm
C. a zygote
D. a nuclei | C | allenai/sciq |
The plants alternation between haploid and diploud generations allow it to do what?
Choices:
A. reproduce asexually and simultaneously
B. reproduce asexually and biologically
C. reproduce asexually and sexually
D. reproduce sexually and autonomously | C | allenai/sciq |
Most of the chemical reactions in the body are facilitated by what?
Choices:
A. vitamins
B. enzymes
C. carbohydrates
D. proteins | B | allenai/sciq |
What is the termination of a pregnancy in progress called?
Choices:
A. contraception
B. miscarriage
C. delivery
D. abortion | D | allenai/sciq |
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. inhabitable zones
D. dead zones | D | allenai/sciq |
Which muscles allow your fingers to also make precise movements for actions?
Choices:
A. intrinsic muscles
B. fine movement muscles
C. paired muscles
D. motoric muscles | A | allenai/sciq |
Testing what usually requires making observations or performing experiments?
Choices:
A. homeostasis
B. variables
C. conclusion
D. hypothesis | D | allenai/sciq |
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 | A | allenai/sciq |
Water molecules move about continuously due to what type of energy?
Choices:
A. seismic
B. optical
C. kinetic
D. potential | C | allenai/sciq |
A small scale version of what type of map displays individual rock units?
Choices:
A. geographic map
B. polar map
C. geologic map
D. seismic map | C | allenai/sciq |
What is defined as a change in the inherited traits of organisms over time?
Choices:
A. divergence
B. generation
C. variation
D. evolution | D | allenai/sciq |
What hormone, which is associated with luteinizing hormone and male sexuality, helps bring about physical changes in puberty?
Choices:
A. estrogen
B. steroids
C. epinephrine
D. testosterone | D | allenai/sciq |
Where do angiosperms produce seeds in flowers?
Choices:
A. cones
B. testes
C. germs
D. ovaries | D | allenai/sciq |
In order to create food, what do photosynthetic protists use?
Choices:
A. hydrocarbons
B. decayed matter
C. thermal energy
D. light energy | D | allenai/sciq |
What type of vertebrates are birds?
Choices:
A. epidermal tetrapod
B. invertebrates
C. exothermic
D. endothermic tetrapod | D | allenai/sciq |
What type of ions do ionic compounds contain?
Choices:
A. positive and negative
B. negative and neutal
C. positive and charged
D. regular and irregular | A | allenai/sciq |
All living things need air and this to survive?
Choices:
A. water
B. stimuli
C. ecosystem
D. habitat | A | allenai/sciq |
The cells of all eukarya have a what?
Choices:
A. epidermis
B. nucleus
C. necrosis
D. chloroplast | B | allenai/sciq |
What type of plate boundaries produce huge mountain ranges in the ocean basin?
Choices:
A. coherent
B. parallel
C. divergent
D. tractional | C | allenai/sciq |
Interstitial carbides are produced by the reaction of most transition metals at high temperatures with what element?
Choices:
A. oxygen
B. hydrogen
C. carbon
D. nitrogen | C | allenai/sciq |
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. fluxes
B. aphids
C. decomposers
D. Soil | C | allenai/sciq |
What are the sites of protein synthesis or assembly?
Choices:
A. ribosomes
B. chromosomes
C. chloroplasts
D. plasma | A | allenai/sciq |
What must replicate in the cell cycle before meiosis i takes place?
Choices:
A. dna
B. meiotic fluid
C. cell walls
D. sperm | A | allenai/sciq |
What phenomenon is primarily the result of plate tectonic motions?
Choices:
A. eruption
B. volcanoes
C. tsunamis
D. earthquake | D | allenai/sciq |
What is a group of neuron cell bodies in the periphery called?
Choices:
A. ganglion
B. crystals
C. organism
D. gangism | A | allenai/sciq |
Where does most of our food come from?
Choices:
A. lichen
B. gymnosperms
C. angiosperms
D. microbes | C | allenai/sciq |
Gases are most ideal at high temperature and what pressure?
Choices:
A. absolute
B. low
C. high
D. stable | B | allenai/sciq |
Hard igneous rocks and easily dissolved sedimentary rocks respond very differently to what natural force?
Choices:
A. gravity
B. evaporation
C. sunlight
D. weathering | D | allenai/sciq |
A diet rich in calcium and what vitamin may reduce the risk of osteoporosis and related bone fractures?
Choices:
A. niacin
B. vitamin d
C. vitamin A
D. vitamin C | B | allenai/sciq |
How many people die from air pollution each year?
Choices:
A. 22 million
B. 17 million
C. 14 million
D. 5 million | A | allenai/sciq |
What substances serve as catalysts in most of the biochemical reactions that take place in organisms?
Choices:
A. carbohydrates
B. iseotrops
C. hormones
D. enzymes | D | allenai/sciq |
The formation of an amalgam allows the metal to react with what?
Choices:
A. blood and sweat
B. air and water
C. helium and oxygen
D. cloth and plastic | B | allenai/sciq |
A pulley changes the direction of the force t exerted by the cord without changing its what?
Choices:
A. latitude
B. position
C. magnitude
D. longitude | C | allenai/sciq |
What is the name of the small bumps that contain taste buds and covers the tongue?
Choices:
A. lingual tonsils
B. palatine tonsils
C. papillae
D. cuticle | C | allenai/sciq |
In the absence of air resistance, all falling objects accelerate at the same rate due to what force?
Choices:
A. weight
B. motion
C. velocity
D. gravity | D | allenai/sciq |
The ability for a plasma membrane to only allow certain molecules in or out of the cell is referred to as what?
Choices:
A. selective permeability
B. periodic permeability
C. moderate permeability
D. total permeability | A | allenai/sciq |
In the presence of oxygen, hydrogen can interact to make what?
Choices:
A. water
B. carbon
C. helium
D. acid | A | allenai/sciq |
What galaxy is our solar system a part of?
Choices:
A. milky way
B. Andromeda
C. Bode's Galaxy
D. Centaurus | A | allenai/sciq |
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 | C | allenai/sciq |
Whether the organism is a bacterium, plant, or animal, all living things access energy by breaking down these?
Choices:
A. carbohydrate molecules
B. oxygen molecules
C. protein molecules
D. lipid molecules | A | allenai/sciq |
Increasing the temperature of n2 molecules increases what energy of motion?
Choices:
A. kinetic energy
B. emotional energy
C. compression energy
D. residual energy | A | allenai/sciq |
Which radio frequency should you listen to if you want less noise?
Choices:
A. cb
B. am
C. fm
D. wave | C | allenai/sciq |
What form of radiation is the energy emitted by the sun?
Choices:
A. seismic
B. magnetic
C. electromagnetic
D. thermal | C | allenai/sciq |
What is the suns innermost layer called?
Choices:
A. flare
B. surface
C. core
D. solar | C | allenai/sciq |
A growth spurt requires constant divisions of what?
Choices:
A. hairs
B. cells
C. seeds
D. proteins | B | allenai/sciq |
What's the term for the gradual progression from simple plants to larger more complex ones in an area?
Choices:
A. primary pattern
B. pattern progression
C. primary succession
D. complex progression | C | allenai/sciq |
Fungi may form mutualistic relationships with plants, algae, cyanobacteria, and what?
Choices:
A. eggs
B. plants
C. animals
D. farmers | C | allenai/sciq |
Which cycle tracks the flow of nitrogen through an ecosystem?
Choices:
A. nitrogen cycle
B. nitrogen reaction
C. life cycle
D. water cycle | A | allenai/sciq |
What consequence of a tornado is responsible for most injuries and deaths?
Choices:
A. falling debris
B. touring debris
C. flying debris
D. catching debris | C | allenai/sciq |
What are the only truly innate behaviors in humans called?
Choices:
A. flinches
B. reflexes
C. automatic movements
D. feats | B | allenai/sciq |
What happens to the density of air as the altitude decreases?
Choices:
A. increases
B. remains the same
C. decreases
D. multiplies | C | allenai/sciq |
How do some animals change their depth?
Choices:
A. metamorphosis
B. spontaneous mutations
C. mass migration
D. by changing their density | D | allenai/sciq |
What phenomenon is crowding out other species and making all the other causes of extinction worse?
Choices:
A. human suburbanization
B. climate change
C. human overpopulation
D. migration | C | allenai/sciq |
Dessication is an extreme and usually fatal form of what in animals?
Choices:
A. diarrhea
B. starvation
C. depletion
D. dehydration | D | allenai/sciq |
Internal and external forms of what life process occur as simple diffusion due to a partial pressure gradient?
Choices:
A. reproduction
B. photosynthesis
C. metabolism
D. respiration | D | allenai/sciq |
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. formation extinction
C. mass extinction
D. minor extinction | C | allenai/sciq |
Soluble minerals and clays accumulate in what soil layer, allowing it to hold more water?
Choices:
A. subsurface
B. silt
C. topsoil
D. subsoil | D | allenai/sciq |
What is the common word for potential difference in a circuit?
Choices:
A. frequency
B. watt
C. voltage
D. velocity | C | allenai/sciq |
How many chambers does the stomach of a crocodile have?
Choices:
A. six
B. ten
C. two
D. three | C | allenai/sciq |
When populations get close to the carrying capacity, what happens to growth?
Choices:
A. dies
B. spikes
C. halts
D. slows | D | allenai/sciq |
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 | B | allenai/sciq |
Most plants grow continuously, except for what periods?
Choices:
A. mutant
B. winter
C. abnormal
D. dormant | D | allenai/sciq |
What man-made devices in space are used to observe the earth's surface?
Choices:
A. satellites
B. telescopes
C. sensors
D. crystals | A | allenai/sciq |
Carboxylic acids are weak acids, meaning they are not 100% ionized in what?
Choices:
A. air
B. water
C. liquid
D. ethanol | B | allenai/sciq |
An endocrine disease usually involves the secretion of too much or not enough of what?
Choices:
A. metabolite
B. enzyme
C. sweat
D. hormone | D | allenai/sciq |
In experiments with garden peas, austrian monk gregor mendel described the basic patterns of what?
Choices:
A. color
B. behavior
C. inheritance
D. preference | C | allenai/sciq |
Nutrition and diet affect your metabolism. more energy is required to break down fats and proteins than this?
Choices:
A. carbohydrates
B. minerals
C. electrolytes
D. vitamins | A | allenai/sciq |
What are unsaturated hydrocarbons with at least one double bond between carbon atoms called?
Choices:
A. enzymes
B. alkenes
C. peptides
D. amines | B | allenai/sciq |
What is the opposite of melting?
Choices:
A. compression
B. liquidation
C. evaporation
D. freezing | D | allenai/sciq |
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 | D | allenai/sciq |
Most of the pathogens that cause stis enter the body through mucous membranes of which organs?
Choices:
A. stomach
B. eyes
C. reproductive organs
D. kidneys | C | allenai/sciq |
The activation of what kind of buds induces branching?
Choices:
A. axillary buds
B. arterial buds
C. leafy buds
D. lymphatic buds | A | allenai/sciq |
Sexual reproduction involves haploid gametes and produces a diploid zygote through what process?
Choices:
A. sedimentation
B. fertilization
C. infection
D. vivisection | B | allenai/sciq |
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. no limit
B. done limit
C. such limit
D. crippling limit | A | allenai/sciq |
What percentage of men suffer from some form of erectile dysfunction by age 40?
Choices:
A. approximately 10 percent
B. approximately 80 percent
C. approximately 60 percent
D. approximately 40 percent | D | allenai/sciq |
What secures together immovable joints and prevents them from moving?
Choices:
A. light cartilage
B. dense collagen
C. dense cartilage
D. light collagen | B | allenai/sciq |
Transform faults are the site of massive what?
Choices:
A. vibrations
B. storms
C. earthquakes
D. tornadoes | C | allenai/sciq |
When water goes above and below its freezing point, what rock-breaking phenomenon is common?
Choices:
A. ice inverting
B. ice wedging
C. ice crushing
D. ice locking | B | allenai/sciq |
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. waste plankton
B. land plankton
C. source plankton
D. marine plankton | D | allenai/sciq |
What type of reactions form compounds?
Choices:
A. mineral reactions
B. consumption reactions
C. chemical reactions
D. physical reactions | C | allenai/sciq |
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 | C | allenai/sciq |
What is the term for the process in which living things with beneficial traits produce more offspring than others do?
Choices:
A. natural variety
B. natural selection
C. natural survival
D. natural process | B | allenai/sciq |
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