question stringlengths 68 502 | answer stringclasses 4
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Question: What lipid, added to certain foods to keep them fresher longer, increases the risk of heart disease?
Options:
A. cholesterol
B. fatty acids
C. Omega-3 fatty acids
D. trans fat | D |
Question: What occurs in a population when its allele frequencies change over time?
Options:
A. variation
B. generation
C. extinction
D. evolution | D |
Question: What do some animals use for shelter?
Options:
A. invisible materials
B. indestructible materials
C. nonliving materials
D. living materials | C |
Question: In statistics a boundary on the precision and accuracy is known as what?
Options:
A. instance
B. median
C. frequency
D. error | D |
Question: How many limbs do all mammals have?
Options:
A. three
B. it varies
C. four
D. two | C |
Question: More common in developing countries, parasitic diseases caused by roundworms often result from poor practice of what?
Options:
A. agriculture
B. education
C. preventative medicine
D. personal hygiene | D |
Question: What type of bacteria stains red?
Options:
A. kilogram-negative bacteria
B. gram-negative bacteria
C. calcium - negative bacteria
D. gram - such bacteria | B |
Question: The shapes of minerals form as they are broken along what planes?
Options:
A. cleavage planes
B. calcium planes
C. sedimentary planes
D. parallel planes | A |
Question: An atomic symbol is used to represent what?
Options:
A. element
B. mole
C. electron shell
D. weight | A |
Question: Mammals can feed at various levels of food chains, as herbivores, insectivores, carnivores and what else?
Options:
A. vegetarians
B. blood eaters
C. nematodes
D. omnivores | D |
Question: What are winds that blow over a limited area called?
Options:
A. trade winds
B. local winds
C. Planetary Winds
D. Periodic Winds | B |
Question: Descending fibers from the cerebrum have branches that connect to neurons in the pons. those neurons project into the cerebellum, providing a copy of motor commands sent to this?
Options:
A. cerebral cortex
B. neurotransmitters
C. spinal cord
D. umbilical cord | C |
Question: An element is defined by the number of ____ it contains?
Options:
A. particles
B. electrons
C. protons
D. neutrons | C |
Question: What term is used to describe the distance traveled divided by the time it took to travel that distance?
Options:
A. speed
B. velocity
C. movement
D. motion | A |
Question: Which gas is released by the group of archaea known as methanogens?
Options:
A. propane
B. sulfur
C. methane
D. butane | C |
Question: Of the four main wobble base pairs, guanine is paired with what?
Options:
A. uracil
B. cytosine
C. thymine
D. adenine | A |
Question: The atoms of a compound are held together by what type of bonds?
Options:
A. covalent
B. chemical
C. mineral
D. radiation | B |
Question: Unlike energy, what happens to matter in ecosystems?
Options:
A. it is recycled
B. it does not exist
C. it is filtered
D. it is destroyed | A |
Question: The anion is the methanoate ion, which is commonly called the what?
Options:
A. formate ion
B. metabolized ion
C. glutathione ion
D. isomer | A |
Question: Drinking too much water too fast can lead to what potentially fatal condition, which causes dangerous changes to salt levels?
Options:
A. drowning
B. water intoxication
C. inebriation
D. osmosis | B |
Question: When electrons move from one atom to another, they become what?
Options:
A. particles
B. neons
C. atoms
D. ions | D |
Question: Another way to classify matter is to describe it as a solid, a liquid, or a gas, which was done in the examples of solutions. these three descriptions, each implying that the matter has certain physical properties, represent the three of these?
Options:
A. phases of mass
B. forms of substances
C. types of ato... | D |
Question: What is the health-threatening smoke exhaled by a cigarette smoker or released from tobacco products?
Options:
A. secondhand smoke
B. primary smoke
C. contamination smoke
D. secondary smoke | A |
Question: Why do waves travel faster through solids?
Options:
A. particles range together
B. particles closer together
C. particles fuse together
D. particles pipe together | B |
Question: What is the point on the ground that is located directly above where underground rocks fracture (or the "focus" point)?
Options:
A. seismic point
B. danger zone
C. fault line
D. epicenter | D |
Question: When atoms gain or lose electrons, they can form electrically charged particles called what?
Options:
A. ions
B. crystals
C. eons
D. toxins | A |
Question: What do you call a pure substance that cannot be broken down into different types of substances?
Options:
A. molecule
B. sample
C. compound
D. element | D |
Question: Natural selection can only take place if there is variation, or differences, among individuals in a population. importantly, these differences must have some genetic basis; otherwise, the selection will not lead to change in this?
Options:
A. mass extinction
B. fertilization
C. next generation
D. spontaneous ... | C |
Question: The large hadron collider is the biggest type of what invention, which boosts particles to high energies?
Options:
A. mass spectrometer
B. particle accelerator
C. nuclear reactor
D. electron microscope | B |
Question: Metals, metalloids, and nonmetals are the different classes of what?
Options:
A. compounds
B. structures
C. elements
D. ions | C |
Question: What holds homologs together as the spindle forms for the first meiotic division?
Options:
A. chiasmata
B. pollenation
C. spirogyra
D. magnetism | A |
Question: In the periodic table, elements are arranged from left to right according to what property?
Options:
A. metallic mass
B. atomic mass
C. major mass
D. real mass | B |
Question: What is made of gases that are essential for photosynthesis and other life activities?
Options:
A. atmosphere
B. ocean
C. stratosphere
D. air | A |
Question: When a stream flows from a hard to soft rock area, what is often formed?
Options:
A. a river
B. a lake
C. a waterfall
D. a riverbank | C |
Question: What term means taking used items and materials and turning them into something new?
Options:
A. reproducing
B. feeding
C. recycling
D. collecting | C |
Question: What lets different species of anole lizards live in the same area without competing?
Options:
A. variation
B. specialization
C. cooperation
D. concentration | B |
Question: What are made in the first step of the scientific method?
Options:
A. hypothesis
B. patterns
C. conclusions
D. observations | D |
Question: What type of organisms do not need blood?
Options:
A. single-celled
B. marine
C. vertebrate
D. cold-blooded | A |
Question: What type of plants are the mosses, the hornwarts, and the liverworts considered to be?
Options:
A. spirogyra
B. nonvascular
C. Vascular
D. xerophyte | B |
Question: Wearing what will reduce the amplitude of sound waves entering the ears?
Options:
A. megaphone
B. hardhat
C. goggles
D. hearing protectors | D |
Question: What type of motion only occurs when there is one force applied at the beginning of the trajectory after which there is no interference apart from gravity?
Options:
A. propellant
B. projectile
C. thrust
D. velocity | B |
Question: What type of energy is produced when two objects move together?
Options:
A. potential energy
B. mechanical energy
C. molecular energy
D. physical energy | B |
Question: Which form of matter assumes the shape of its container?
Options:
A. liquids
B. crystals
C. gas
D. solids | C |
Question: What type of energy is possessed by autumn leaves before they fall?
Options:
A. mechanical energy
B. radioactive energy
C. potential energy
D. kinetic energy | C |
Question: The heterotroph eats only or mainly what?
Options:
A. animals
B. plants
C. decomposers
D. roots | B |
Question: All carbon atoms have how many protons?
Options:
A. eight
B. six
C. two
D. one | B |
Question: The cerebellum is associated with what major human organ?
Options:
A. heart
B. brain
C. liver
D. bladder | B |
Question: The kinetic energy of a moving object depends on it's mass and it's what?
Options:
A. volume
B. liquid content
C. iron content
D. shape | A |
Question: Electromagnetic waves are comprised of what two types of energy?
Options:
A. kinetic and electric
B. electric and magnetic
C. magnetic and gravitational
D. solar and kinetic | B |
Question: Cranial nerves convey specific sensory information from the head and neck directly to what organ?
Options:
A. heart
B. nose
C. brain
D. eye | C |
Question: Where are the viral enzyme and genome packaged inside?
Options:
A. pollen grains
B. viral capsid
C. mitochondria
D. ribosomes | B |
Question: What would cause warm receptors to signal the hypothalamic thermostat?
Options:
A. increased temperature
B. hyperventilation
C. lower temperature
D. hypothermia | A |
Question: The direction of the force of gravity is in what direction?
Options:
A. straight line
B. curved line
C. fragmented line
D. staggered line | A |
Question: Sickle-cell anemia, leukemia, lymphoma, and hemophilia are examples of what types of disease?
Options:
A. Cancer
B. microscopic disease
C. blood disease
D. Bone Diease | C |
Question: In hypothesis-based science, specific results are predicted from a general premise, which is called what type of reasoning that proceeds from general to particular?
Options:
A. deductive
B. reflexive
C. transitive
D. reactive | A |
Question: The process by which an organism develops from a single-celled zygote to a multi-cellular organism is complex and well regulated. the regulation occurs through signaling between cells and tissues and responses in the form of what?
Options:
A. phenotype exchange
B. spontaneous mutation
C. dna replication
D. di... | D |
Question: The development of specific structures in specific locations is called what?
Options:
A. speciation
B. adaptation
C. pattern formation
D. specialty skills | C |
Question: An experiment generates what to support a hypothesis?
Options:
A. reason
B. study
C. falsehoods
D. evidence | D |
Question: What is the outermost occupied shell of electrons in an atom.
Options:
A. valence shell
B. radiative shell
C. Inner Shell
D. modular shell | A |
Question: What ear structure has three fluid filled ducts, including the organ of corti, where sound waves in air go to vibration?
Options:
A. semicirciular canal
B. saccule
C. cochlea
D. utricle | C |
Question: What is the name for elements that neither contain carbon nor come from living things?
Options:
A. acids
B. contaminants
C. pigments
D. minerals | D |
Question: Kinetic energy is energy of this?
Options:
A. speed
B. food
C. gravity
D. motion | D |
Question: Reproduction in prokaryotic cells is by what process of growth, enlargement and division?
Options:
A. photosynthesis
B. binary fission
C. budding
D. mitosis | B |
Question: Why do some dry fruits split open at maturity?
Options:
A. to release berries
B. to release seeds
C. to release toxins
D. to regenerate | B |
Question: What is an ionic bond in nature?
Options:
A. kinetic
B. magnetic
C. radioactive
D. electrostatic | D |
Question: Most air masses form over what two types of regions?
Options:
A. marine and tropical
B. polar and tropical
C. polar and arctic
D. arctic and marine | B |
Question: Earthworms are important deposit feeders that help form and enrich what material?
Options:
A. soil
B. coal
C. shale
D. wood | A |
Question: Growth, morphogenesis, and cell differentiation produce the plant what?
Options:
A. fat
B. fur
C. body
D. tail | C |
Question: What is a fold of the outer skin lining the shell called?
Options:
A. cortex
B. stack
C. marble
D. mantle | D |
Question: What sciences are the study of living organisms?
Options:
A. social sciences
B. physical sciences
C. life sciences
D. earth sciences | C |
Question: Frogs are amphibians that live part of the time in fresh water and rest of the time where?
Options:
A. on land
B. in stagnant water
C. in salt water
D. underground | A |
Question: Name the missing type of friction: static, rolling, fluid _____?
Options:
A. dragging
B. sliding
C. falling
D. turning | B |
Question: What is the study of how living organisms interact with each other and with their environment?
Options:
A. genetics
B. zoology
C. ecology
D. botany | C |
Question: What are electrons lost during the formation of ions called?
Options:
A. cations
B. oxides
C. catalysts
D. isotopes | A |
Question: Making a specific statement based on a general principle is the definition of what type of reasoning?
Options:
A. inference
B. transitive
C. inductive
D. deductive | D |
Question: The earth's magnetic poles have done what repeatedly in the past?
Options:
A. demagnetized
B. stayed the same
C. rotated
D. switched places | D |
Question: What do we call the orderly sequence of events in the life of a cell from the division of a single parent cell to produce two new daughter cells, to the subsequent division of those daughter cells?
Options:
A. cell replication
B. cell death
C. circadian cycle
D. cell cycle | D |
Question: What are natural resources which can be replaced in a relatively short period called?
Options:
A. replaceable resources
B. renewable resources
C. materials resources
D. solvent resources | B |
Question: The biological electron transport chain provides for an orderly, stepwise transfer of electrons. both nadh (reduced nicotinamide adenine dinucleotide) and fadh2 (reduced flavin adenine dinucleotide) are energy rich molecules that liberate a large amount of energy during what?
Options:
A. oxidation
B. evaporat... | A |
Question: The cells within meristems divide relatively frequently, generating additional what?
Options:
A. chlorophyll
B. photosynthesis
C. proteins
D. cells | D |
Question: Another unit of energy, used widely in the health professions and everyday life, is _______?
Options:
A. calorie ( cal )
B. biomass ( cal )
C. body index
D. carbs | A |
Question: What are the specfic types of proteins that determine your blood type called?
Options:
A. Globulins
B. Plasma
C. antigens
D. antibodies | C |
Question: Which layer of soil experiences the most weathering?
Options:
A. humus
B. subsoil
C. top layer
D. bedrock | C |
Question: Osteoporosis, osteoarthritis, fractures, and sprains are problems affecting what system?
Options:
A. tissues system
B. skeletal system
C. digestive system
D. nervous system | B |
Question: What are typically arranged into complex tubular networks with extensive surface areas?
Options:
A. Golgi apparatus
B. transport epithelia
C. alveoli
D. hair follicles | B |
Question: What is the simplest unit of structure and function of all living organisms called?
Options:
A. molecule
B. partical
C. atom
D. cell | D |
Question: Activities that can reduce the effects of what condition include exercises to keep the blood and lymph flowing through affected areas?
Options:
A. anemia
B. asthma
C. edema
D. inflammation | C |
Question: An alloy is a mixture of metals that has bulk metallic properties different from those of its what?
Options:
A. mineral elements
B. constituent elements
C. nuclear elements
D. system elements | B |
Question: There are two types of digestion, mechanical and what else?
Options:
A. chemical
B. mineral
C. thermal
D. radiation | A |
Question: What is the rate at which energy is being transferred called?
Options:
A. force
B. electric
C. power
D. pressure | C |
Question: Where does the process of assembling amino acids into a protein take place?
Options:
A. in the nucleus
B. in chromosomes
C. in the ribosome
D. in the chitin | C |
Question: Where can you find sodium acetate?
Options:
A. a heat pack
B. baking soda
C. a cold pack
D. table salt | A |
Question: For a given amount of solute, do smaller particles have a greater or lesser surface area?
Options:
A. equal
B. lesser
C. greater
D. neither | C |
Question: What is the functional unit of compact bone?
Options:
A. the auteron
B. the osteon
C. the boron
D. the canton | B |
Question: Mineralocorticoids are hormones synthesized by the adrenal cortex that affect what balance, by regulating sodium and water levels?
Options:
A. equilibrium
B. homeostasis
C. osmotic
D. blood pressure | C |
Question: The pulmonary circulation carries blood between what two organs?
Options:
A. heart and lungs
B. kidney and heart
C. lungs and kidney
D. heart and pancreas | A |
Question: The ancient greek philosopher aristotle thought that all matter consists of just four what, which he identified as earth, air, water, and fire?
Options:
A. compounds
B. elements
C. ingredients
D. structures | B |
Question: What are archaea that live in extremely hot environments called?
Options:
A. hypothermic
B. tardigrades
C. hemophiliacs
D. thermophiles | D |
Question: Warming conditions and, perhaps, human activities contributed to what fate of many organisms of the pleistocene era?
Options:
A. overpopulation
B. extinction
C. evolution
D. accumulation | B |
Question: Practical limits of van de graaff generators arise because the large electric fields polarize and eventually do what to surrounding materials?
Options:
A. decompose
B. ionize
C. isolate
D. displace | B |
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