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float64 | question
stringlengths 78
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null | Question: In this type of reaction, an element replaces another element in a compound, and the element is in any state of matter but is not an ion?
Options:
A. replication reaction
B. polar reaction
C. single-replacement reaction
D. double-replacement reaction
Answer: | C |
null | Question: When egg laying and mating occur together, as in external fertilization, the certainty of what is high?
Options:
A. high reproduction rate
B. survival
C. paternity
D. germination
Answer: | C |
null | Question: Net production efficiency allows ecologists to quantify how efficiently organisms of a particular what incorporate the energy they receive into biomass?
Options:
A. neural level
B. hypothesized level
C. trophic level
D. sea level
Answer: | C |
null | Question: At a synapse, what objects are released to carry a nerve impulse from one neuron to the next?
Options:
A. receptors
B. viruses
C. neurotransmitters
D. microorganisms
Answer: | C |
null | Question: What happens to the density of air as the altitude decreases?
Options:
A. decreases
B. increases
C. remains the same
D. multiplies
Answer: | A |
null | Question: Compounds containing an atom of what element, bonded in a hydrocarbon framework, are classified as amines?
Options:
A. hydrogen
B. nitrogen
C. oxygen
D. ammonia
Answer: | B |
null | Question: What kind of fertilization do birds have?
Options:
A. deep fertilization
B. sensitive fertilization
C. asexual
D. internal fertilization
Answer: | D |
null | Question: About how tall can mid-ocean ridges be?
Options:
A. 2 inches
B. about 2 meters
C. about 2 km
D. about 2 feet
Answer: | C |
null | Question: Triggered by changes in the environment, migration and hibernation occur as cycles on what temporal basis?
Options:
A. seasonally
B. bi-annually
C. monthly
D. annual
Answer: | D |
null | Question: What increases the chances of someone inheriting a mitochondrial disease?
Options:
A. presence of defect ornithopods and undefected mtdna
B. presence of defect transgenic and undefected mtdna
C. presence of defect mtdna and undefected mtdna
D. presence of defect transgenic and defect mtdna
Answer: | C |
null | Question: The white fluffy part of popcorn is also what?
Options:
A. membrane
B. endosperm
C. jiffy
D. phosphor
Answer: | B |
null | Question: What type of rocks are very useful for determining the deformation history of an area?
Options:
A. sedimentary
B. limestone
C. crystalline
D. igneous
Answer: | A |
null | Question: For skeletal development, the most common template is what?
Options:
A. calcium
B. cartilage
C. collagen
D. membrane
Answer: | B |
null | Question: What two ways do channels respond during membrane depolarization?
Options:
A. typically and sequentially
B. independently and typically
C. sequentially and identically
D. independently and sequentially
Answer: | D |
null | Question: How does the distance between galaxies change as the universe expands?
Options:
A. it decreases
B. it increases
C. it becomes irrelevant
D. it is unchanged
Answer: | B |
null | Question: What is a relationship where one species benefits and the other is unaffected?
Options:
A. mutualism
B. commensalism
C. pollenation
D. parasitism
Answer: | B |
null | Question: Gases can be classifed as real or what?
Options:
A. dense
B. ideal
C. noble
D. shape
Answer: | B |
null | Question: Where does waste enter the large intestine from?
Options:
A. the small intestine
B. the small tissue
C. liver
D. kidneys
Answer: | A |
null | Question: What gas is contributing to the greenhouse effect?
Options:
A. sodium chloride
B. nitrogen
C. oxygen
D. carbon dioxide
Answer: | D |
null | Question: What is the smallest aromatic hydrocarbon?
Options:
A. sulfide
B. phosphate
C. furan
D. benzene
Answer: | D |
null | Question: In scientific investigations, descriptive statistics are useful for summarizing the characteristics of large what?
Options:
A. tissues
B. samples
C. organisms
D. questions
Answer: | B |
null | Question: What do dendrites receive signals from?
Options:
A. electrons
B. fibers
C. hormones
D. neurons
Answer: | D |
null | Question: What can occur during periods of heavy rain?
Options:
A. floods
B. volcanoes
C. earthquakes
D. glaciers
Answer: | A |
null | Question: The combined magnetic force of the magnetized wire coil and iron bar makes an electromagnet what?
Options:
A. very strong
B. Very light
C. very heavy
D. very reduced
Answer: | A |
null | Question: The diffusion of water across a membrane because of a difference in concentration is called?
Options:
A. osmosis
B. absorption
C. diffusion
D. hemostasis
Answer: | A |
null | Question: Enzymes in cellular reactions work to do what to the reaction?
Options:
A. slow it down
B. decrease heat
C. speed it up
D. increase yield
Answer: | C |
null | Question: Vertebrates. from the smallest of fish to us. one of the main features we all have in common is our what?
Options:
A. warm blood
B. backbone
C. laying eggs
D. hair
Answer: | B |
null | Question: What is the name of the command center of the cell?
Options:
A. mitochondria
B. nucleus
C. vacuole
D. molecules
Answer: | B |
null | Question: What type of behavior is frogs croaking or deer clashing antlers an example of?
Options:
A. courtship
B. instincts
C. learned behavior
D. mating
Answer: | A |
null | Question: Adult sea stars have what kind of symmetry?
Options:
A. skeletal symmetry
B. biological symmetry
C. radial symmetry
D. hydrological symmetry
Answer: | C |
null | Question: What is the most common type of brain injury?
Options:
A. Contusion
B. Diffuse Axonal
C. Anoxic Event
D. concussion
Answer: | D |
null | Question: The light reactions take place in which membranes?
Options:
A. the stroma
B. the phospholipid
C. the cell membranes
D. the thylakoid
Answer: | D |
null | Question: What do we call the full range of electromagnetic waves?
Options:
A. electromagnetic scale
B. electromagnetic spectrum
C. molecular spectrum
D. mechanical spectrum
Answer: | B |
null | Question: Meiosis is part of the process of gametogenesis, which is the production of what?
Options:
A. egg only
B. sperm only
C. sperm and eggs
D. chromosomes
Answer: | C |
null | Question: The movement of ice causes glaciers to have cracks referred to as?
Options:
A. slides
B. anomalies
C. crevasses
D. fissures
Answer: | C |
null | Question: What is the most common form of ocean life?
Options:
A. protazoa
B. zooplankton
C. plankton
D. phytoplankton
Answer: | C |
null | Question: What happens to the core of a star when it begins to run low on hydrogen?
Options:
A. it contracts
B. it explodes
C. it expands
D. it disappears
Answer: | A |
null | Question: What is a fluid-filled body cavity that is completely enclosed by mesoderm called?
Options:
A. hymenium
B. pseudocoelom
C. choroid
D. coelom
Answer: | D |
null | Question: Harmful instances of what can result in errors in protein sequence that yield non-functional proteins?
Options:
A. bioaccumulation
B. infection
C. radiation
D. mutation
Answer: | D |
null | Question: What has a pseudocoelom and hydrostatic skeleton?
Options:
A. gymnosperms
B. omnivores
C. vertebrates
D. roundworms
Answer: | D |
null | Question: What three particles make up most atoms?
Options:
A. protons, electrons and nucleus
B. micrometres , electrons and neutrons
C. neutrons, protons and radii
D. protons, electrons and neutrons
Answer: | D |
null | 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?
Options:
A. coriolis effect
B. muon effect
C. tropical effect
D. centrifugal effect
Answer: | A |
null | Question: Different shapes often correlate with different what in cells?
Options:
A. functions
B. enzymes
C. types
D. systems
Answer: | A |
null | Question: What happens when oppositely charged regions of neighboring water molecules are attracted to each other?
Options:
A. potassium bonds form
B. hydrogen bonds form
C. metabolic bonds form
D. oxygen is released
Answer: | B |
null | Question: At high pressures, how are the molecules of a gas crowded?
Options:
A. further apart
B. few together
C. small together
D. closer together
Answer: | D |
null | Question: The crocodilia order, which includes crocodiles, alligators, caimans, and gharils, is part of what class of animals?
Options:
A. mammals
B. aquatic
C. parasites
D. reptiles
Answer: | D |
null | Question: Molecules with a carboxyl group are called what?
Options:
A. Fatty acids
B. catalyzed acids
C. acetic acids
D. carboxylic acids
Answer: | D |
null | Question: What type of device uses electromagnetic induction to change the voltage of electric current?
Options:
A. hot transformer
B. electronic transformer
C. mechanical transformer
D. radioactive transformer
Answer: | B |
null | Question: In a few species, chloroplast genes are inherited only from what?
Options:
A. sperm
B. siblings
C. mothers
D. eggs
Answer: | A |
null | Question: What is the period during which humans become sexually mature called?
Options:
A. puberty
B. adulthood
C. maturity
D. adolescence
Answer: | A |
null | Question: If the amount of force of that is applied is increased, what happens to the work that a machine is producing?
Options:
A. it is easier
B. it's variable
C. it's unchanged
D. it is harder
Answer: | A |
null | Question: Which type of plankton make food via photosynthesis?
Options:
A. common plankton
B. zooplankton
C. phytoplankton
D. dinoflagellates
Answer: | C |
null | Question: In many species, display behaviors, like a gorilla beating on its chest, are used instead of actual physical attacks to show what?
Options:
A. friction
B. dominance
C. aggression
D. stress
Answer: | C |
null | Question: What is the common name of mixtures of hydrocarbons that formed over millions of years from the remains of dead organisms?
Options:
A. fossil record
B. fossil fuels
C. renewable resources
D. non-renewable fuel
Answer: | B |
null | Question: What is the name of the location in which a stream or river starts?
Options:
A. mouth
B. shore
C. source
D. spring
Answer: | C |
null | Question: Radon (rn) is a radioactive gas formed by the decay of naturally occurring uranium in rocks such as granite. it tends to collect in the basements of houses and poses a significant health risk if present in indoor air. many states now require that houses be tested for radon before they are what?
Options:
A. sold
B. modified
C. built
D. seen
Answer: | A |
null | Question: When menstrual periods become less frequent and finally cease; this is called?
Options:
A. metabolic
B. menopause
C. hormonal imbalance
D. climax
Answer: | B |
null | Question: Many species use their body shape and coloration to avoid what?
Options:
A. human contact
B. sunlight
C. exposure
D. detection by predators
Answer: | D |
null | Question: What are the two types of optical telescopes?
Options:
A. refracting and compound
B. reflecting and recapitulating
C. reflecting and layering
D. reflecting and refracting
Answer: | D |
null | Question: What is the term for rotation of a bone toward the midline of the body?
Options:
A. lateral rotation
B. interior rotation
C. medial rotation
D. visual rotation
Answer: | C |
null | Question: What do electromagnetic receptors detect?
Options:
A. subtle radiation
B. electromagnetic radiation
C. background radiation
D. dangerous radiation
Answer: | B |
null | Question: Catalysts can greatly increase the rates of chemical what?
Options:
A. decay
B. reactions
C. photosynthesis
D. effects
Answer: | B |
null | Question: Fossil fuels and coal are examples of what kind of resources?
Options:
A. renewable
B. nonrenewable
C. reusable
D. valuable
Answer: | B |
null | Question: Sulfuric acid conducts the charge in what kind of battery?
Options:
A. nickel-metal hydride
B. lithium ion
C. nickel cadmium
D. lead-acid cell
Answer: | D |
null | Question: Generators convert mechanical energy to which kind?
Options:
A. static
B. radiation
C. kinetic
D. electrical
Answer: | D |
null | Question: Fuels according to the law of what, can never actually be “consumed”; it can only be changed from one form to another?
Options:
A. conservation of energy
B. expansion of energy
C. use of energy
D. difference of energy
Answer: | A |
null | Question: Fusion is another nuclear process that can be used to produce energy. in this process, smaller nuclei are combined to make larger nuclei, with an accompanying release of this?
Options:
A. food
B. mineral
C. energy
D. cells
Answer: | C |
null | Question: The two main types of phagocytic cells in the mammalian body are neutrophils and what other?
Options:
A. eukaryotes
B. leukocytes
C. macrophages
D. histones
Answer: | C |
null | Question: An image that is double the size of the object would have what?
Options:
A. magnification
B. stimulation
C. configuration
D. illumination
Answer: | A |
null | Question: Prophase is preceded by a preprophase stage in what type of cells?
Options:
A. hair and nail cells
B. brain cells
C. plant cells
D. egg cells
Answer: | C |
null | Question: What makes the earth habitable for humans?
Options:
A. abundance of water
B. carbonate of water
C. aridity of water
D. availability of water
Answer: | A |
null | Question: "cardio" has become slang for what type of exercise that raises your heart rate for an extended amount of time?
Options:
A. aerobic
B. cyclical
C. anaerobic
D. kinetic
Answer: | A |
null | Question: How many valves are in the heart?
Options:
A. one
B. six
C. two
D. four
Answer: | D |
null | Question: What do ionic bonds form between?
Options:
A. metals and nonmetals
B. metals and organisms
C. metals and freshwaters
D. metals and carbonates
Answer: | A |
null | Question: What is the main function of the cardiovascular system?
Options:
A. digestion
B. implanatation
C. to transport
D. respiration
Answer: | C |
null | Question: What is the modern periodic table based on?
Options:
A. element mass
B. element density
C. metallic number
D. atomic number
Answer: | D |
null | Question: When can mutations occur in genes?
Options:
A. during dna replication
B. after rna replication
C. during rna replication
D. after dna replication
Answer: | A |
null | Question: What can protons and neutrons be broken down into?
Options:
A. strings
B. molecules
C. quarks
D. ions
Answer: | C |
null | Question: What is the term for daily cycles of behavior, like the sleep-wake cycle?
Options:
A. variable rhythms
B. behavioral rhythms
C. circadian rhythms
D. daily rhythms
Answer: | C |
null | Question: What are lipopolysaccharide components of the outer membrane of gram-negative bacteria?
Options:
A. hormones
B. reactants
C. pathogens
D. endotoxins
Answer: | D |
null | Question: Jellyfish belong to which phylum?
Options:
A. porifera
B. cnidaria
C. analidae
D. mycobacteria
Answer: | B |
null | Question: Where are sensors for thermoregulation concentrated in the brain?
Options:
A. thyroid
B. medulla
C. the hypothalamus
D. pituitary gland
Answer: | C |
null | Question: What is formed when atoms of different elements combine in a chemical reaction?
Options:
A. dust
B. toxins
C. compounds
D. crystals
Answer: | C |
null | Question: Acidity is measured on what kind of scale?
Options:
A. caloric scale
B. electromagnetic scale
C. ph scale
D. pneumatic scale
Answer: | C |
null | Question: The cephalic phase (reflex phase) of gastric secretion, which is relatively brief, takes place before food enters where?
Options:
A. skin
B. stomach
C. Head
D. respiratory
Answer: | B |
null | Question: At what time of the year can tornadoes occur?
Options:
A. winter
B. spring
C. any
D. summer
Answer: | C |
null | Question: What are gymnosperms lacking compared to most angiosperms?
Options:
A. use elements
B. muscle elements
C. vessel elements
D. vascular elements
Answer: | C |
null | Question: Which body system controls all the others by sending electrical messages?
Options:
A. the localized system
B. the specialized system
C. the endocrine system
D. the nervous system
Answer: | D |
null | Question: An amide bond joining two amino acid units is called a what?
Options:
A. carboxyl bond
B. peptide bond
C. precipitate bond
D. ammonia bond
Answer: | B |
null | Question: What type of lines run next to each other?
Options:
A. fault lines
B. perpendicular lines
C. contour lines
D. crater lines
Answer: | C |
null | Question: The number of waves that pass a fixed point in a given amount of time is referred to as what?
Options:
A. wave frequency
B. wave speed
C. wave harmonics
D. tendency frequency
Answer: | A |
null | Question: What glands are wedges of glandular and neuroendocrine tissue adhering to the top of the kidneys by a fibrous capsule?
Options:
A. adrenal glands
B. fatty glands
C. nutrients glands
D. heart glands
Answer: | A |
null | Question: Where does the heartbeat originate in vertebrates?
Options:
A. the pulse
B. the heart
C. the blood
D. the tissue
Answer: | B |
null | Question: A balanced equation has an equal number of what on each side?
Options:
A. protons and neutrons
B. protons and reactions
C. valencies and electrons
D. electrons and neutrons
Answer: | A |
null | Question: The outer planets are made of hydrogen and helium, so they are termed what?
Options:
A. hydrogen giants
B. light giants
C. gas giants
D. helium giants
Answer: | C |
null | Question: How does the image focused by the eye travel to the brain?
Options:
A. the sensory nerve
B. the modulated nerve
C. the secondary nerve
D. the optic nerve
Answer: | D |
null | Question: What kind of energy constitutes the total kinetic energy of all the atoms that make up an object?
Options:
A. kinetic energy
B. phenomena energy
C. atmospheric energy
D. thermal energy
Answer: | D |
null | Question: Vertebrates evolved from primitive forms of which creature?
Options:
A. cephalopods
B. chordates
C. humanoids
D. arthropods
Answer: | B |
null | Question: Changes to what that delete, disrupt, or rearrange many loci at once are usually harmful?
Options:
A. chromosomes
B. cells
C. neutrons
D. ribosomes
Answer: | A |
null | Question: Anaerobic prokaryotes can live without what compound in their environment (it's a compound that people do need to live)?
Options:
A. nitrogen
B. carbon
C. Hydrogen
D. oxygen
Answer: | D |
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