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stringlengths 78
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|---|---|---|
null | Question: How many valence electrons does helium have?
Options:
A. two
B. Five
C. three
D. six
Answer: | A |
null | Question: The outermost layer of the leaf is the epidermis; it is present on both sides of the leaf and is called the upper and lower epidermis, respectively. botanists call the upper side the adaxial surface (or adaxis) and the lower side this?
Options:
A. dorsal surface
B. anterior surface
C. posterior surface
D. abaxial surface (or abaxis)
Answer: | D |
null | Question: Multiple sclerosis, huntington’s disease, and parkinson’s disease all affect what body system?
Options:
A. reproductive system
B. nervous system
C. lymph system
D. circulatory system
Answer: | B |
null | Question: What is formed when water vapor in the air condenses into tiny droplets?
Options:
A. hail
B. smoke
C. fog
D. rain
Answer: | C |
null | Question: How do bacteria reproduce?
Options:
A. sexual reproduction
B. binary fission
C. nuclear fission
D. budding
Answer: | B |
null | Question: Mixture of metals is called what?
Options:
A. alloy
B. amalgm
C. compound
D. fusion
Answer: | A |
null | Question: Metamorphic rocks form when an existing rock is changed by heat or what?
Options:
A. cold
B. pressure
C. chemical reaction
D. radiation
Answer: | B |
null | Question: Name the organ located behind the nasal cavity in which both food and air pass through?
Options:
A. medulla
B. diaphragm
C. pharynx
D. sinus
Answer: | C |
null | Question: What type of protein speeds up chemical reactions in cells?
Options:
A. lipids
B. enzyme
C. collagen
D. hemoglobin
Answer: | B |
null | Question: What attaches a muscle to a bone?
Options:
A. tendons
B. arteries
C. marrow
D. veins
Answer: | A |
null | Question: What kind of parasites are nearly all ticks that live on the body surfaces of reptiles or mammals?
Options:
A. bloodsucking
B. ectoparasites
C. helminths
D. protozoa
Answer: | A |
null | Question: Do most substances increase or decrease in size when they change from a liquid to a solid?
Options:
A. stay the same
B. decrease
C. increase
D. it is unable to be measured
Answer: | B |
null | Question: How many pathways do plants have for carbon fixation?
Options:
A. four
B. two
C. three
D. one
Answer: | C |
null | Question: Heat and light are forms of what, which refers to the ability to do work?
Options:
A. waves
B. energy
C. food
D. fuel
Answer: | B |
null | Question: What is the term for anything that can cause cancer?
Options:
A. contamination
B. chemical
C. carcinogen
D. contaminate
Answer: | C |
null | Question: What allows theories to be widely accepted?
Options:
A. evidence
B. observation
C. hypothesis
D. theory
Answer: | A |
null | Question: What is a feature that prokaryotes lack?
Options:
A. epidermis
B. cell wall
C. nucleus
D. plasma
Answer: | C |
null | Question: Chemical formulas for ionic compounds are called what?
Options:
A. magnetic formulas
B. electronic formulas
C. velocity formulas
D. ionic formulas
Answer: | D |
null | Question: The existence of (virtual) photons is possible only by virtue of the heisenberg uncertainty principle and can travel an unlimited distance, so the range ofthe electromagnetic for is what?
Options:
A. simple
B. infinite
C. generated
D. finite
Answer: | B |
null | Question: Meters, such as those in analog fuel gauges on a car, are a common application of magnetic torque on a current-carrying what?
Options:
A. arc
B. loop
C. dial
D. circuit
Answer: | B |
null | Question: What is the process by which water moves through semi-permeable membranes from one part of the body to another?
Options:
A. osmosis
B. diffusion
C. mitosis
D. electrolysis
Answer: | A |
null | Question: What are plastids that contain other pigments?
Options:
A. chromoplasts
B. chloroplasts
C. cytoplasm
D. lucoplasts
Answer: | A |
null | Question: Seed plants that produce seeds in the ovaries of their flowers are known as what?
Options:
A. conifers
B. angiosperms
C. spores
D. gymnosperms
Answer: | B |
null | Question: What percentage of all species that ever lived on earth have gone extinct?
Options:
A. 25%
B. 93 %
C. 99%
D. 50%
Answer: | C |
null | Question: A biofilm is a colony of prokaryotes that is stuck to what?
Options:
A. the middle
B. the bottom
C. skin
D. surface
Answer: | D |
null | Question: What term did schrödinger use for regions around the nucleus where electrons are most likely to be?
Options:
A. isotopes
B. ellipses
C. orbitals
D. arrays
Answer: | C |
null | Question: In humans, a zygote has how many chromosomes?
Options:
A. 46
B. 36
C. 23
D. 42
Answer: | A |
null | Question: Which type of muscle is most common in the human body?
Options:
A. skeletal
B. hormonal
C. smooth
D. digestive
Answer: | A |
null | Question: Most bacteria may be placed into one of three groups based on their response to gaseous?
Options:
A. nitrogen
B. carbon
C. potassium
D. oxygen
Answer: | D |
null | Question: The pain of angina means the heart muscle fibers need more what?
Options:
A. water
B. carbon
C. nitrogen
D. oxygen
Answer: | D |
null | Question: The product of a wave's wavelength and its frequency is what?
Options:
A. speed
B. amplitude
C. trough
D. velocity
Answer: | A |
null | Question: In the stomach, which material's arrival triggers churning and the release of gastric juices?
Options:
A. food
B. acid
C. bile
D. hair
Answer: | A |
null | Question: Water found on the surface of the earth is referred to as what?
Options:
A. surface water
B. runoff
C. groundwater
D. reservoir water
Answer: | A |
null | Question: What is the only natural phenomenon that causes more damage than earthquakes?
Options:
A. volcanos
B. hurricanes
C. landslides
D. blizzards
Answer: | B |
null | Question: The insect reaches full size, acquires wings, and becomes sexually mature after what final stage?
Options:
A. larvae
B. molt
C. pupae
D. metamorphosis
Answer: | B |
null | Question: In which sphere of the atmosphere do the northern and southern lights occur?
Options:
A. ionosphere
B. lithosphere
C. thermosphere
D. stratosphere
Answer: | C |
null | Question: What is the blastocyst called after implantation?
Options:
A. an produce
B. trophoblast
C. an embryo
D. an nucleus
Answer: | C |
null | Question: Varves form in lakes covered by what?
Options:
A. bridges
B. ice
C. soot
D. coral reef
Answer: | B |
null | Question: Which acid releases nitrates into soil?
Options:
A. sulfuric
B. citric
C. uric
D. lactic
Answer: | C |
null | Question: What is the membrane lining the back of the eye called?
Options:
A. lens
B. retina
C. cornea
D. aperture
Answer: | B |
null | Question: Mammals are synapsids, meaning they have a single opening in what structure?
Options:
A. heart
B. hip
C. skull
D. spine
Answer: | C |
null | Question: What is defined as force per unit area?
Options:
A. resistance
B. momentum
C. pressure
D. energy
Answer: | C |
null | Question: What is approximately the average stroke volume in humans?
Options:
A. 75 ml
B. 65 ml
C. 70 ml
D. 80 ml
Answer: | C |
null | Question: What does glycolysis generate in phase ii?
Options:
A. atp
B. dna
C. amino acids
D. adp
Answer: | A |
null | Question: What kinds of rocks can change and become new types of rocks?
Options:
A. igneous rocks
B. sedimentary rocks
C. any types of rocks
D. metamorphic rocks
Answer: | C |
null | Question: What term means opposition to the flow of electric charges that occurs when electric current travels through matter?
Options:
A. polarity
B. diffusion
C. resistance
D. antagonism
Answer: | C |
null | Question: Defined as total distance traveled divided by elapsed speed, average speed is a scalar quantity that does not include what?
Options:
A. shift
B. pressure
C. direction
D. size
Answer: | C |
null | Question: What are the most numerous and diverse biochemical compounds?
Options:
A. acids
B. proteins
C. Carbohydrates
D. lipids
Answer: | B |
null | Question: Work is done only if a force is exerted in the direction of what?
Options:
A. motion
B. wind
C. north
D. gravity
Answer: | A |
null | Question: What protists absorb food molecules across their cell membranes?
Options:
A. absorptive
B. dielectric
C. fibrous
D. solid
Answer: | A |
null | Question: What keeps glaciers from forming in water?
Options:
A. skin
B. movement
C. salt
D. warmth
Answer: | D |
null | Question: What is a property of a system whose magnitude depends on only the present state of the system, not its previous history?
Options:
A. extensive function
B. laplacian
C. intensive function
D. state function
Answer: | D |
null | Question: The standard reduction potential can be determined by subtracting the standard reduction potential for the reaction occurring at the anode from the standard reduction potential for the reaction occurring at this?
Options:
A. Spinner
B. plasma
C. cathode
D. electrode
Answer: | C |
null | Question: The oceans affect earth’s atmosphere and influence its what?
Options:
A. earthquakes
B. climate
C. volcanoes
D. mountains
Answer: | B |
null | Question: An element is defined by the number of ____ it contains?
Options:
A. electrons
B. particles
C. protons
D. neutrons
Answer: | C |
null | Question: An ecosystem consists of all the living things and what?
Options:
A. local environment
B. nonliving environment
C. phosphorescent environment
D. living environment
Answer: | B |
null | Question: What type of waves transmit the energy of an earthquake?
Options:
A. seismic waves
B. sonic waves
C. tectonic waves
D. volcanic waves
Answer: | A |
null | Question: The pleura that surrounds the lungs consists of how many layers?
Options:
A. four
B. three
C. one
D. two
Answer: | D |
null | Question: What substances serve as catalysts in most of the biochemical reactions that take place in organisms?
Options:
A. hormones
B. enzymes
C. carbohydrates
D. iseotrops
Answer: | B |
null | Question: Communication is any way that animals share what?
Options:
A. water
B. information
C. food
D. genes
Answer: | B |
null | Question: Surface tension of alveolar fluid, which is mostly water, creates an inward pull of the tissue of what organ?
Options:
A. brain
B. spleen
C. heart
D. lung
Answer: | D |
null | Question: Most turtle bodies are covered by a special bony or cartilaginous shell developed from their what?
Options:
A. ribs
B. fins
C. tails
D. spines
Answer: | A |
null | Question: How many major forces of elevation cause allele frequencies to change?
Options:
A. five
B. four
C. one
D. three
Answer: | B |
null | Question: The northern spotted owl and the mexican spotted owl inhabit geographically separate locations with different climates and ecosystems. the owl is an example of?
Options:
A. biodiversity
B. allopatric speciation
C. symbiotic species
D. parallel evolution
Answer: | B |
null | Question: The right ventricle pumps what type of blood toward the lungs?
Options:
A. plasma
B. oxygen-poor
C. oxygen-rich
D. oxygenated
Answer: | B |
null | Question: What is another name for producers?
Options:
A. rotifers
B. allergens
C. autotrophs
D. plants
Answer: | C |
null | Question: What is it called when organisms with traits that better enable them to adapt to their environment tend to survive and reproduce in greater numbers?
Options:
A. natural selection
B. natural distribution
C. evolution
D. adaptation
Answer: | A |
null | Question: The similarity in biochemical compounds between living things provides evidence for the evolution of species from what?
Options:
A. rare tribes
B. recent ancestors
C. varied ancestors
D. common ancestors
Answer: | D |
null | Question: Photosynthesis is an endothermic reaction that gets its energy from what?
Options:
A. electricity
B. light
C. wind
D. air
Answer: | B |
null | Question: What do scientists collect to test a hypothesis?
Options:
A. beilefs
B. books
C. arguements
D. evidence
Answer: | D |
null | Question: What is the smallest aromatic hydrocarbon?
Options:
A. naphthalene
B. anthracene
C. phenanthrene
D. benzene
Answer: | D |
null | Question: The parts of the ears involved in balance are called what?
Options:
A. rectangular canals
B. semicircular canals
C. symmetrical canals
D. lobe canal
Answer: | B |
null | Question: What forms the changing shapes of sand dunes?
Options:
A. temperature
B. humidity
C. wind
D. magnetism
Answer: | C |
null | Question: When an electron transitions from an excited state to a less excited state, or ground state, the difference in energy is emitted as a what?
Options:
A. quark
B. photon
C. nucleus
D. neutron
Answer: | B |
null | Question: What substance flows over the land from precipitation or melting snow or ice?
Options:
A. water
B. air
C. nitrogen
D. lava
Answer: | A |
null | Question: The combined gas law involves three properties of a gas - volume, absolute temperature, and what?
Options:
A. power
B. pressure
C. direction
D. time
Answer: | B |
null | Question: What do secondary spermatocytes form when completing meiosis?
Options:
A. pores
B. sporozoans
C. spermatids
D. semen
Answer: | C |
null | Question: Who is said to have dropped two objects of different masses from the tower of pisa?
Options:
A. darwin
B. copernicus
C. newton
D. galileo
Answer: | D |
null | Question: What gas produced by fossil fuel use is a major cause of global warming?
Options:
A. helium
B. hydrogen
C. phosphorous
D. carbon dioxide
Answer: | D |
null | Question: What is the joint where the pelvic girdle and leg come together?
Options:
A. femur joint
B. hip joint
C. hip socket
D. meniscus
Answer: | B |
null | Question: What kind of reproduction requires the fusion of male and female gametes?
Options:
A. sexual reproduction
B. subject reproduction
C. asexual reproduction
D. autonomous reproduction
Answer: | A |
null | Question: When additional water is added to an aqueous solution, what happens to the concentration of that solution?
Options:
A. doubles
B. no change
C. increases
D. decreases
Answer: | D |
null | Question: Cancers derived from epithelial cells are referred to as what?
Options:
A. adenomas
B. caricatures
C. nodules
D. carcinomas
Answer: | D |
null | Question: All matter in the universe is composed of one or more unique pure substances called what?
Options:
A. molecules
B. atoms
C. elements
D. compounds
Answer: | C |
null | Question: One common way to remove phosphates from water is by the addition of what?
Options:
A. calcium hydroxide
B. acetic acid
C. nitrous oxide
D. isotopes
Answer: | A |
null | Question: How does the liquid in a thermometer respond to heat or cold?
Options:
A. disappears
B. expands or contracts
C. freezes or boils
D. rises or vaporizes
Answer: | B |
null | Question: What kind of reproduction generates new individuals without fusion of an egg and sperm?
Options:
A. asexual
B. propagation
C. sexual
D. gametes
Answer: | A |
null | Question: When your brain senses that your body temperature is increasing, it sends messages to the blood vessels in the skin to increase in what?
Options:
A. height
B. weight
C. diameter
D. surface
Answer: | C |
null | Question: Electrons exist only where the wave is what?
Options:
A. solid
B. stable
C. seen
D. spinning
Answer: | B |
null | Question: The lithosphere is divided into a dozen major and several minor what?
Options:
A. zones
B. plates
C. faults
D. crystals
Answer: | B |
null | Question: What division of the nervous system controls involuntary activities that are not emergencies, such as the digestive organs breaking down food?
Options:
A. somatic nervous system
B. central nervous system
C. parasympathetic division
D. posterior division
Answer: | C |
null | Question: What is essential for cellular respiration for all aerobic organisms?
Options:
A. nitrogen
B. water
C. carbon
D. oxygen
Answer: | D |
null | Question: In an environment, symbiosis, competition, and relying on other organisms for food are examples of what?
Options:
A. adaptation
B. commensalism
C. collaboration
D. interaction
Answer: | D |
null | Question: The coccyx, or tailbone, results from the fusion of four small what?
Options:
A. coccygeal vertebrae
B. arsine vertebrae
C. alangulam vertebrae
D. rib vertebrae
Answer: | A |
null | Question: What are the attractive forces that occur between polar molecules called?
Options:
A. dipole-dipole forces
B. particle - dipole forces
C. ion-dipole forces
D. induced-dipole forces
Answer: | A |
null | Question: Uranium is an example of a non-renewable resource used to produce what type of power?
Options:
A. water
B. electrical
C. wind
D. nuclear
Answer: | D |
null | Question: What is part of a cycle that holds an element or water for a long period of time called?
Options:
A. homeostasis
B. a holding tank
C. a reservoir
D. a ditch
Answer: | C |
null | Question: The symbol for each what is usually the first letter or two of its name?
Options:
A. material
B. property
C. state
D. element
Answer: | D |
null | Question: Combined substances are either compounds or what?
Options:
A. solutions
B. combinations
C. mixtures
D. concentrations
Answer: | C |
null | Question: Boyle’s law applies to matter which is in what state?
Options:
A. liquids
B. solids
C. plasma
D. gas
Answer: | D |
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