question stringlengths 68 502 | answer stringclasses 4
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Question: Opportunistic diseases are usually the direct cause of death of people with what disease?
Options:
A. aids
B. parkinson
C. heart
D. liver | A |
Question: What is the name of an uncharged particle whose weight is nearly equal to that of a proton?
Options:
A. proton
B. electron
C. a nuclei
D. a neutron | D |
Question: The chemical symbol of which ion is written first in ionic compounds?
Options:
A. good metal ion
B. last ion
C. positive metal ion
D. negative ion | C |
Question: What is the opposite of rarefaction zones, where air molecules in waves are loosely packed?
Options:
A. molecules zones
B. pressure wave
C. compression zones
D. measurements zones | C |
Question: What organs secrete hormones that help maintain homeostasis?
Options:
A. the lungs
B. the digestion organs
C. the kidneys
D. the gonads | C |
Question: The nuclear envelope is a double-layered plasma membrane like the cell membrane, although without what?
Options:
A. membrane proteins
B. cytoplasm
C. nucleic acids
D. cell walls | A |
Question: What is another name for a radioactive isotope?
Options:
A. xerophyte
B. nono particle
C. kilocalorie
D. radiostope | D |
Question: Dietary proteins are broken down into amino acids during what process?
Options:
A. digestion
B. accumulation
C. filtration
D. photosynthesis | A |
Question: Some gametophytes develop underground and form mycorrhizal associations with what?
Options:
A. fungi
B. animals
C. protists
D. plants | A |
Question: What is the nervous tissue in the brain and in the rest of the nervous system made up of?
Options:
A. neurons
B. ions
C. electrons
D. plastic | A |
Question: How do planets usually rotate to their orbital planes?
Options:
A. randomly
B. exactly perpendicular
C. chaotic
D. nearly perpendicular | D |
Question: What are algae that live in colonies of hundreds of cells called?
Options:
A. chlorophyta
B. euglenids
C. rhodophyta
D. volvox | D |
Question: Irrigation can waste a lot of what natural resource?
Options:
A. water
B. habitat
C. fertilizer
D. money | A |
Question: What drives puberty in male humans?
Options:
A. methane
B. testosterone
C. estrogen
D. bloodstream | B |
Question: What is our largest source of energy?
Options:
A. wind
B. coal
C. methane
D. iron | B |
Question: Helium-3 is produced by beta decay of a certain what?
Options:
A. electron
B. quark
C. nuclide
D. particle | C |
Question: What do animals require to grow and develop?
Options:
A. food
B. sunlight
C. sucrose
D. carbon dioxide | A |
Question: What term is used to describe the process by which organisms give rise to offspring?
Options:
A. photosynthesis
B. variation
C. osmosis
D. reproduction | D |
Question: What are the nonliving matter that living things need called?
Options:
A. fluids
B. acids
C. elements
D. nutrients | D |
Question: What term is used to express the measurement of how high land is above sea level?
Options:
A. elevation
B. latitude
C. distance
D. knots | A |
Question: A pulley is a simple machine that consists of a grooved wheel and?
Options:
A. a lever
B. a rope
C. a battery
D. a wedge | B |
Question: What is another name for a broad explanation that is supported by a great deal of evidence?
Options:
A. concept
B. hypothesis
C. conjecture
D. theory | D |
Question: Vinegar is a solution of which acid?
Options:
A. boric
B. magnesium
C. acetic
D. crystalline | C |
Question: Which system does the large and small intestine belong to?
Options:
A. LYMPHATIC
B. digestive system
C. molecules system
D. skeletal system | B |
Question: Particles of matter have the most definite shape in what material state?
Options:
A. gas
B. solid
C. liquid
D. plasma | B |
Question: What body system allows humans to move?
Options:
A. muscular system
B. abnormal system
C. lung system
D. digestive system | A |
Question: High decibel sounds can damage your?
Options:
A. nose
B. brain
C. ears
D. eyes | C |
Question: What are the dark areas that appear on the sun called?
Options:
A. anomalies
B. coreolis effect
C. coronas
D. sunspots | D |
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. energy
B. cells
C. mineral
D. food | A |
Question: One common form of mate choice, called assortative mating, is an individual’s preference to mate with partners who are what?
Options:
A. close to themselves
B. different from themselves
C. similar to themselves
D. far away from | C |
Question: What powerful microscopes use a beam of subatomic particles instead of a beam of light?
Options:
A. electron microscopes
B. complex microscopes
C. scientific microscopes
D. nuclear microscopes | A |
Question: Which scientist built the first telescope?
Options:
A. newton
B. darwin
C. einstein
D. galileo | D |
Question: What type of bacteria change nitrogen gas from the atmosphere to nitrates in soil?
Options:
A. nitrogen fixing bacteria
B. multicellular bacteria
C. hydrophylic bacteria
D. spiral bacteria | A |
Question: If no unbalanced force acts on an object the object remains at constant velocity or what?
Options:
A. constant
B. constant movement
C. rotating
D. at rest | D |
Question: What group of organisms was initially misclassified as plants because they also lack the ability to move, grow in soil, and have cell walls?
Options:
A. algae
B. fungi
C. gymnosperm
D. protozoa | B |
Question: How does the epidermis renew its layer?
Options:
A. exfoliating scrub
B. scabbing
C. loofah
D. shedding dead cells | D |
Question: What is it called when crystals form from magma?
Options:
A. vulcanism
B. crystallization
C. sedimentation
D. transpiration | B |
Question: What type of symmetry does an octopus have?
Options:
A. essential
B. quadrilateral
C. bilateral
D. internal | C |
Question: What is necessary in a person who wishes to play wind instruments?
Options:
A. strong hands
B. healthy lungs
C. vocal cords
D. powerful lips | B |
Question: What is the scientific term for climates with the least moisture?
Options:
A. tropical
B. arid
C. polar
D. mediterannean | B |
Question: What's the term for a piece of an organism breaking off and forming a new organism?
Options:
A. fragmentation
B. extinction
C. depletion
D. improvization | A |
Question: What animal group can be found in every environment on earth, but primarily in the warm and moist tropics?
Options:
A. insect
B. rodent
C. reptiles
D. horses | A |
Question: Most people can survive only a few days without what essential substance?
Options:
A. carbon
B. food
C. water
D. air | C |
Question: The vegetal pole refers to the concentration of what toward one pole of an egg?
Options:
A. embryo
B. shell
C. light
D. yolk | D |
Question: What machines have scientist built to smash particles that are smaller than atoms into each other head-on?
Options:
A. Atom Accelerators
B. energy accelerators
C. nitrogen accelerators
D. particle accelerators | D |
Question: What type of relationship occurs between organisms when one member benefits without affecting the other?
Options:
A. bilateral
B. cooperative
C. commensalism
D. parasitic | C |
Question: The type of what dictates how far it can penetrate into matter, such as lead or human flesh?
Options:
A. radiation
B. evaporation
C. specific gravity
D. insulation | A |
Question: What role do proteins play in a biological reaction?
Options:
A. reverse hormones
B. act as catalysts
C. antioxidants
D. amino acid chains | B |
Question: If you drive or take the bus to school or work, you are using a vehicle that probably burns gasoline, a material that burns fairly easily and provides energy to power the vehicle. recall that burning is a?
Options:
A. temperature change
B. energy change
C. chemical change
D. physical change | C |
Question: Muscles are composed mostly of cells called what?
Options:
A. muscle organelles
B. muscle filament
C. muscle fibers
D. muscle polymers | C |
Question: Conifers are the most prevalent type of what plant group?
Options:
A. theropods
B. angiosperms
C. algae
D. gymnosperms | D |
Question: What element enters the body when an organism breathes?
Options:
A. helium
B. oxygen
C. water
D. methane | B |
Question: Bonding in molecules with resonance forms is better described by which theory?
Options:
A. string theory
B. Pascal's theory
C. molecular orbital theory
D. Geiger theory | C |
Question: In places like the grand canyon, hard rocks that are resistant to weathering form what, while softer rocks that weather more easily form slopes?
Options:
A. valleys
B. peaks
C. cliffs
D. crevasses | C |
Question: When two skateboarders push against each other what happens?
Options:
A. they move apart
B. they stick together
C. they magnetize
D. they rise | A |
Question: The three layers of protective coverings of the spinal cord is called what?
Options:
A. dermis
B. meninges
C. muscles
D. tendons | B |
Question: A measure of how close a series of measurements are to one another is what?
Options:
A. precision
B. density
C. reflection
D. calculation | A |
Question: Ionic compounds contain cations and anions rather than what?
Options:
A. discrete neutral molecules
B. characterized neutral molecules
C. analogous neutral molecules
D. positive molecules | A |
Question: Are giraffes herbivores or are they omnivores?
Options:
A. herbivores
B. omnivores
C. carnivores
D. neither | A |
Question: Respectively, which parts of the circulatory system carry blood from the heart toward capillaries, and return blood to the heart from capillaries?
Options:
A. arteries and capillaries
B. organs and veins
C. arteries and veins
D. parasites and veins | C |
Question: It was not until the era of the ancient greeks that we have any record of how people tried to explain the chemical changes they observed and used. at that time, natural objects were thought to consist of only four basic elements: earth, air, fire, and this?
Options:
A. water
B. soul
C. grass
D. sky | A |
Question: In science, what do we call a mathematical relationship that exists between observations under a given set of conditions?
Options:
A. theory
B. idea
C. law
D. fact | C |
Question: What conducts nerve-like electrical signals that help integrate whole-plant function?
Options:
A. the ploem
B. the stem
C. the spicule
D. the stamen | A |
Question: Found in many products, such as petri dishes, agar is made from mucilagnious material in this?
Options:
A. seawater
B. gelatin
C. seaweed
D. fungi | C |
Question: What is the process of capturing a substance or particle from outside the cell by engulfing it with the cell membrane?
Options:
A. metastasis
B. autolysis
C. ectocytosis
D. endocytosis | D |
Question: What are the layered rocks that form when certain prokaryotes bind thin films of sediment together?
Options:
A. stomatolites
B. stalactites
C. stalagmites
D. quartzes | A |
Question: Where are the taste buds located in humans?
Options:
A. teeth
B. lips
C. mouth
D. tongue | D |
Question: What describes the way light reflects off of the surface of the mineral?
Options:
A. hardness
B. density
C. luster
D. intensity | C |
Question: What tissue consists of cells that form the body’s structure?
Options:
A. reproductive
B. connective
C. congenital
D. fibrous | B |
Question: What forms at the boundary between two air masses?
Options:
A. a cool
B. a rough
C. hurricane
D. a front | D |
Question: Nitrogen wastes are produced by the breakdown of what during normal metabolism?
Options:
A. proteins
B. lipids
C. enzymes
D. hormones | A |
Question: In the humoral response, what protein substances help neutralize or eliminate toxins and pathogens in the blood and lymph?
Options:
A. platelets
B. parasites
C. membranes
D. antibodies | D |
Question: Most ferns produce the same type of spores and are therefore called what?
Options:
A. sporozoans
B. homosporous
C. heterosporous
D. seeds | B |
Question: In which way do sunspots occur?
Options:
A. in threes
B. in fours
C. in pairs
D. by themselves | C |
Question: What is the most important source of electromagnetic waves on earth?
Options:
A. radios
B. cell phones
C. wireless networks
D. the sun | D |
Question: Conifers are the dominant phylum of gymnosperms, with the most variety of species. most are tall trees that usually bear scale-like or needle-like leaves. the thin shape of the needles and their waxy cuticle limits water loss through this?
Options:
A. transpiration
B. sedimentation
C. transportation
D. evapor... | A |
Question: Connecting to the brainstem and extending down the body through the spinal column is the spinal cord. the spinal cord is a thick bundle of nerve tissue that carries information about the body to this?
Options:
A. lungs
B. liver
C. stomach
D. brain | D |
Question: Where do most cubozoans live?
Options:
A. arctic oceans
B. rivers
C. tropical oceans
D. lakes | C |
Question: What type of treatment is being researched that may cure or prevent genetic disorders?
Options:
A. regulatory therapy
B. gene therapy
C. preventive therapy
D. variation therapy | B |
Question: What are the names of foul-smelling amines, formed as a part of the decay process after death?
Options:
A. sulfur and formaldehyde
B. cadaverine and putrescine
C. formaldehyde and cadaverine
D. methane and sulfur | B |
Question: What's it called when the reaction is sped up until equilibrium is established?
Options:
A. favoring
B. limiting
C. division
D. pushing | A |
Question: What are the smallest particles of water called?
Options:
A. molecules
B. atoms
C. hydrogen
D. ions | A |
Question: The hormone androgen increases aggressiveness and promotes what type of behaviors?
Options:
A. asexual
B. sexual
C. cognitive
D. nervous | B |
Question: Which currents distribute heat around the planet and have a large impact on climate?
Options:
A. air
B. surface
C. wind
D. electrical | B |
Question: What type of gas is a harmless gas that living things add to the atmosphere during respiration?
Options:
A. carbon dioxide
B. Hydrogen
C. helium
D. oxygen | A |
Question: What is formed when hot lava cools?
Options:
A. mineral crystals
B. lava rock
C. hydrogen crystals
D. magma crystals | A |
Question: Which radiations helps sterilize medical supplies?
Options:
A. beta radiation
B. gamma radiation
C. ionizing radiation
D. ions radiation | C |
Question: What type of receptors, also known as intracellular or cytoplasmic receptors, are found in the cytoplasm of the cell and respond to hydrophobic ligand molecules that are able to travel across the plasma membrane?
Options:
A. mechanical
B. essential
C. external
D. internal | D |
Question: Why is water important for the nervous system?
Options:
A. to carry information
B. to prevent dehydration
C. to carry nutrients
D. to prevent disease | B |
Question: What term means the tendency of a mineral to break along certain planes?
Options:
A. fault
B. cavity
C. fracture
D. cleavage | D |
Question: What are the parts used in electronic devices such as computers called?
Options:
A. batteries
B. chargers
C. electronic components
D. digital components | C |
Question: What type of function does the long bone perform?
Options:
A. work as lever
B. works as piston
C. acts as pivot
D. acts as pulley | A |
Question: Metabolism includes both anabolic and which other reaction?
Options:
A. biogenic
B. catabolic
C. enzymatic
D. organic | B |
Question: A virus is essentially dna or rna surrounded by a coat of what?
Options:
A. acids
B. protein
C. organism
D. paint | B |
Question: What is the process of generating electric current with a magnetic field?
Options:
A. mechanical induction
B. electromagnetic ordination
C. electromagnetic induction
D. magnetic induction | C |
Question: Increasing what property of dirt would make it easier to rinse off your hands?
Options:
A. density
B. turbidity
C. viscosity
D. solubility | D |
Question: Net production efficiency allows ecologists to quantify how efficiently organisms of a particular what incorporate the energy they receive into biomass?
Options:
A. sea level
B. trophic level
C. hypothesized level
D. neural level | B |
Question: Some hormones produced by the anterior pituitary regulate the production of hormones by other tissues belonging to what system?
Options:
A. cardiovascular
B. nervous
C. endocrine
D. digestive | C |
Question: A warm-air heating system uses what kind of energy to heat air?
Options:
A. atmospheric
B. thermal
C. cosmic
D. nuclear | B |
Question: Which type of galaxies contain very little gas and dust, are red to yellow in color, contain over a trillion stars and have mostly old stars?
Options:
A. giant orbital galaxies
B. giant gaseous galaxies
C. blue elliptical galaxies
D. giant elliptical galaxies | D |
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