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What is defined as the temperature plus precipitation of an area over a long period of time? Options: A: conditions B: weather C: climate D: environment | C: climate | 4,900 |
Cellular respiration that proceeds in the presence of oxygen is known as what? Options: A: digestive respiration B: aerobic respiration C: kinetic respiration D: anaerobic respiration | B: aerobic respiration | 4,901 |
Where do streams often start? Options: A: oceans B: mountains C: valleys D: plains | B: mountains | 4,902 |
What is the final stage of cell division in eukaryotes as well as prokaryotes? Options: A: electrolysis B: anaphase C: cytokinesis D: mitosis | C: cytokinesis | 4,903 |
B cells and t cells are examples of what type of cells? Options: A: heart cells B: cancer cells C: skin cells D: white blood cells | D: white blood cells | 4,904 |
Some sea anemones establish what kind of relationship with hermit crabs by attaching to the crab’s shell? Options: A: parasitic B: predatory C: mutualistic D: pathogenic | C: mutualistic | 4,905 |
What two things are used in optical instruments to reflect or refract light? Options: A: prisms and microscopes B: mirrors and lenses C: mirrors and magnifiers D: orientations and lenses | B: mirrors and lenses | 4,906 |
Use of oil-consuming bacteria to clean up an oil spill is an example of what? Options: A: coagulation B: bioremediation C: biodegradation D: generation | B: bioremediation | 4,907 |
What measure is resorted to by people who wish to screen out genetic abnormalities in the fetus? Options: A: prenatal testing B: contraceptive use C: stem cell therapy D: in vitro fertilization | A: prenatal testing | 4,908 |
Where are hotspot volcanoes commonly found? Options: A: streams B: rivers C: lakes D: the ocean | D: the ocean | 4,909 |
What can prevent the passage of molecules and ions between cells, such as in the blood-brain barrier? Options: A: solid junctions B: tight junctions C: special junctions D: fatty junctions | B: tight junctions | 4,910 |
When conditions deteriorate, hydras can reproduce sexually, forming resistant zygotes that remain dormant until when? Options: A: Hydras choose B: Spring C: Temperature rise D: conditions improve | D: conditions improve | 4,911 |
The rate of evaporation depends only on the surface area of the liquid and is essentially constant. the rate of condensation depends on the number of molecules in the vapor phase and increases steadily until it equals the rate of this? Options: A: condensation B: absorption C: evaporation D: accumulation | C: evaporation | 4,912 |
In passive transport, small molecules or ions move across the cell membrane without requiring input of what? Options: A: water B: heating C: pressure D: energy | D: energy | 4,913 |
What small glands are abundant within the mucous membranes of the mouth and tongue? Options: A: localized glands B: salivary glands C: hypothalamus glands D: retinal glands | B: salivary glands | 4,914 |
What part of a bird is adapted for the food it eats? Options: A: eye B: head C: teeth D: beak | D: beak | 4,915 |
At transform plate boundaries, two plates move in which directions? Options: A: north and south B: opposite C: same D: parallel | B: opposite | 4,916 |
What term means the adjusting of systems within a cell in order to restore balance or maintain equilibrium? Options: A: aftertouch regulation B: systemic regulation C: homeostatic regulation D: gaseous regulation | C: homeostatic regulation | 4,917 |
Fission is a method of what type of reproduction exhibited by some planarians? Options: A: asexual B: sexual C: propagation D: spawning | A: asexual | 4,918 |
In human females, the mammary glands are associated with, but not part of, what organ system that is used to create new humans? Options: A: digestive B: immune C: reproductive D: endocrine | C: reproductive | 4,919 |
A bicycle is an example of a compound machine made of many what? Options: A: useful machines B: linked machines C: interchangeable machines D: simple machines | D: simple machines | 4,920 |
The last major ice age took place in which era? Options: A: cenozoic B: miocene C: pliocene D: pleistocene | D: pleistocene | 4,921 |
Individual nucleotides can be linked together through their phosphate groups to form? Options: A: nucleic acid polymers B: nitrous acid polymers C: atoms D: dna | A: nucleic acid polymers | 4,922 |
What is the function of chloroplasts that are found in plant and algal cells? Options: A: glycolysis B: photosynthesis C: spermatogenesis D: mitosis | B: photosynthesis | 4,923 |
Silver and ordinary table salt are two examples of chemical what? Options: A: microbes B: impurities C: organism D: substances | D: substances | 4,924 |
What in science are very important so that we can compare experimental data from one lab to another and make sure we all are talking about the same thing? Options: A: Conventional measurements B: uses measurements C: available measurements D: standard measurements | D: standard measurements | 4,925 |
The joints of the carpal bones in the wrist are examples of what type of joints? Options: A: isojoints B: planar joints C: digit joints D: filter joints | B: planar joints | 4,926 |
Hundreds of organelles called myofibrils, made up of two types of protein filaments, are contained in each fiber of what? Options: A: muscle B: cartilage C: hair D: bone | A: muscle | 4,927 |
What the name of the disease where some of the alveoli of the lungs fill with fluid so they can no longer exchange gas? Options: A: emphysema B: pneumonia C: lung cancer D: leukemia | B: pneumonia | 4,928 |
What branch of science is the study of the solid earth? Options: A: biology B: ecology C: palentology D: geology | D: geology | 4,929 |
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: giant elliptical galaxies D: blue elliptical galaxies | C: giant elliptical galaxies | 4,930 |
The gender of a baby is determined by what special pair of chromosomes? Options: A: sister chromatids B: reflection chromosomes C: diploid chromosomes D: sex chromosomes | D: sex chromosomes | 4,931 |
Carbon fixation is the first step of what cycle involving light reactions? Options: A: life cycle B: sun cycle C: calvin cycle D: water cycle | C: calvin cycle | 4,932 |
Pressure, volume, and temperature are related by which law? Options: A: Murphy's Law B: law of inertia C: Law of Conservation D: gas law | D: gas law | 4,933 |
What causes a voltage to exist across the membrane in cells? Options: A: increase in energy B: insulators C: same charge D: difference in charges | D: difference in charges | 4,934 |
Where does digestion begin? Options: A: tongue B: mouth C: stomach D: esophogus | B: mouth | 4,935 |
What significant part of the cell do prokaryotic cells lack? Options: A: a ribosome B: a cell wall C: a nucleus D: mitochondrial dna | C: a nucleus | 4,936 |
Through which artery does blood enter the kidneys? Options: A: jugular B: thoracic artery C: cerebral artery D: renal artery | D: renal artery | 4,937 |
The fungus benefits from the constant supply of food produced by what? Options: A: the photosynthesizer B: the host C: the spermatophyte D: the phytoflagellate | A: the photosynthesizer | 4,938 |
A unique characteristic of mammals is the ability to chew, this happens by the temporalis and the masseter allowing what? Options: A: Up and down B: Bakward and forward C: side-to-side movement D: Grinding | C: side-to-side movement | 4,939 |
What does pushing an object over the surface of a ramp cause? Options: A: tension B: vibration C: friction D: Acceleration | C: friction | 4,940 |
What is the first part of the large intestine called? Options: A: jejunum B: colon C: duodenum D: cecum | D: cecum | 4,941 |
What is it called when minerals replace the organic material to create fossils? Options: A: petrification B: spongin C: carbonization D: permineralization | D: permineralization | 4,942 |
Which enzyme is used in step three of the polymerase chain reaction because of it's ability to withstand high temperatures? Options: A: minocycline polymerase B: backronym polymerase C: carbon polumerase D: taq polymerase | D: taq polymerase | 4,943 |
Although surface waves are slowest, they do most of the damage of what event? Options: A: hurricane B: tsunami C: earthquake D: volcano | C: earthquake | 4,944 |
A notochord has in common with what vertbrate structure? Options: A: trichord B: spinal cord C: rib cage D: rip chord | B: spinal cord | 4,945 |
What contains most of the structures found in skin? Options: A: epidermis B: subcutaneous layer C: basal layer D: dermis | D: dermis | 4,946 |
Massive quanta, like electrons, also act like macroscopic particles—something we expect, because they are the smallest what? Options: A: battalions of matter B: regiments of matter C: units of matter D: depth of matter | C: units of matter | 4,947 |
What is another term for ghost sharks? Options: A: chimaera B: aurea C: anascea D: litoria | A: chimaera | 4,948 |
Most carcinogens produce mutations in genes that control what? Options: A: ubiquitous cycle B: proteins cycle C: cell cycle D: digestive cycle | C: cell cycle | 4,949 |
What does the stomach produce to help digest food? Options: A: amino acid B: lactic acid C: acetic acid D: hydrochloric acid | D: hydrochloric acid | 4,950 |
What term describes waves that transfer energy through matter? Options: A: mechanical currents B: temperature waves C: energy currents D: mechanical waves | D: mechanical waves | 4,951 |
What do the liver, gallbladder, and pancreas contribute that aid in digestion? Options: A: chemicals B: contaminants C: plasma D: crystals | A: chemicals | 4,952 |
Sucrose does not undergo reactions that are typical of aldehydes and ketones, therefore it is a nonreducing what? Options: A: juice B: sugar C: salt D: wheat | B: sugar | 4,953 |
What part of the body controls the responses of hunger and satiety? Options: A: heart B: brain C: small intestine D: blood | B: brain | 4,954 |
Terrestrial and aquatic are the two basic categories of what, on earth? Options: A: substrates B: atmospheres C: dendrites D: biomes | D: biomes | 4,955 |
According to collision theory, particles that lack what kind of energy may collide, but the particles will simply bounce off one another unchanged? Options: A: viscosity energy B: residual energy C: elastic energy D: kinetic energy | D: kinetic energy | 4,956 |
What is the process in which organ systems work to maintain a stable internal environment? Options: A: organ balance B: ketosis C: homeostasis D: homogeneity | C: homeostasis | 4,957 |
Which two states of matter have definite volumes? Options: A: bacteria and liquids B: GAS AND LIQUIDS C: solids and liquids D: contrasts and liquids | C: solids and liquids | 4,958 |
What makes soil and rock particles move gradually down the slope during each thaw? Options: A: rain B: wind C: gravity D: heat | C: gravity | 4,959 |
What are two common weather characteristics of hurricanes? Options: A: high winds and rainfall B: small winds and rainfall C: low winds and sandstorms D: high winds and snowfall | A: high winds and rainfall | 4,960 |
Electric current is measured in coulombs per second, also called what? Options: A: joules B: watts C: voltages D: amperes | D: amperes | 4,961 |
What plays the same role in rotational motion that force plays in linear motion. Options: A: fulcrum B: frame C: torque D: efficiency | C: torque | 4,962 |
Due to the time it takes for light to reach us, galaxies at the edge of the universe are distant in terms of space and what else? Options: A: time B: energy C: gravity D: temperature | A: time | 4,963 |
Fractures, rickets, and osteoarthritis all affect what part(s) of the body? Options: A: Heart B: fossils C: animals D: bones | D: bones | 4,964 |
What are two types of lobe finned fish? Options: A: piranha and pike B: coelacanths and lungfish C: sharks and piranha D: moles and lungfish | B: coelacanths and lungfish | 4,965 |
The frequency of a wave is the reciprocal of what other attribute of the wave? Options: A: period B: amplitude C: term D: length | A: period | 4,966 |
Gas lines should be made of what so they do not rupture? Options: A: typically material B: flexible material C: adjustment material D: Hard material | B: flexible material | 4,967 |
Solvation involves surrounding ions with what? Options: A: passive particles B: proteins C: molecules D: solvent particles | D: solvent particles | 4,968 |
What process converts the sun's hydrogen nuclei into helium? Options: A: nuclear fission B: nuclear fusion C: solar fission D: combustion | B: nuclear fusion | 4,969 |
Land could not be colonized by other organisms until what became established? Options: A: gases B: oxygen C: carbon dioxide D: plants | D: plants | 4,970 |
What often involves the loss of hydrogen, the gain of oxygen, or the loss of electrons? Options: A: precipitation B: decomposition C: carbonation D: oxidation | D: oxidation | 4,971 |
When do cells acquire different identities in an ordered spatial arrangement? Options: A: during mitosis B: before morphogenesis C: larval stage D: during morphogenesis | D: during morphogenesis | 4,972 |
Where does the most important monsoon in the world occur? Options: A: eastern aisa B: the atlantic ocean C: northern africa D: southern asia | D: southern asia | 4,973 |
Extrusive igneous rocks are also called what? Options: A: metamorphic B: magma minerals C: agates D: volcanic rocks | D: volcanic rocks | 4,974 |
What are 3 types of light? Options: A: infrared, visible, ultraviolet B: diffuse, ambient, opaque C: complementary, incandescent, fluorescent D: solar , visible , ultraviolet | A: infrared, visible, ultraviolet | 4,975 |
What is the amount of time a molecule stays in a reservoir known as? Options: A: reservoir time B: known time C: residence time D: suitable time | C: residence time | 4,976 |
What is the term for the horizontal displacement of a projectile from its starting point? Options: A: type B: produce C: Distance D: range | D: range | 4,977 |
Kinetic energy of moving particles of matter, measured by their temperatures are known as: Options: A: atmospheric energy B: solar energy C: visible energy D: thermal energy | D: thermal energy | 4,978 |
What type of prokaryotes live in habitats without oxygen? Options: A: enzymatic B: phosphoric C: aerobic D: anaerobic | D: anaerobic | 4,979 |
What are telescopes that use lenses to bend light called? Options: A: sliding telescopes B: layering telescopes C: reflecting telescopes D: refracting telescopes | D: refracting telescopes | 4,980 |
After the amino acid molecule has been bound to its what, protein synthesis can take place? Options: A: dna molecule B: base C: trna carrier D: RNA receptor | C: trna carrier | 4,981 |
What is the transfer of thermal energy between substances called? Options: A: Permeation B: Diffusion C: Radiation D: heat | D: heat | 4,982 |
What is the term for plants that produce flowers and fruit? Options: A: spores B: endosperms C: angiosperms D: gymnosperms | C: angiosperms | 4,983 |
When volcanoes erupt, what from the mantle is released as carbon dioxide into the air? Options: A: vapor B: lava C: hydrogen D: carbon | D: carbon | 4,984 |
What are the two divisions of vascular plants? Options: A: seedless and seed B: aquatic and terrestrial C: seedless and semi-seeded D: root and seed | A: seedless and seed | 4,985 |
Kidneys, large intestine, liver, skin, and lungs comprise which system? Options: A: excretory system B: Muscular system C: Lymphatic system D: Digestive system | A: excretory system | 4,986 |
What are the two classifications for organisms living in water? Options: A: scharwenka and plankton B: nekton and plankton C: arctan and nekton D: arctan and plankton | B: nekton and plankton | 4,987 |
What does the vertebral column , or backbone, protect? Options: A: neurons B: spinal cord C: disks D: axons | B: spinal cord | 4,988 |
How does the sun generate energy? Options: A: nuclear fusion B: matter multiplication C: certain fusion D: atomic division | A: nuclear fusion | 4,989 |
What contains the spore-forming asci? Options: A: flagella B: sporozoa C: mushroom cap D: the ascocarps | D: the ascocarps | 4,990 |
An estimated 99 percent of the species that have ever lived on earth no longer exist, showing that what event is common? Options: A: extinction B: over fishing C: pollution D: accumulation | A: extinction | 4,991 |
In what area of the body are sutural bones found? Options: A: tooth B: legs C: skin D: skull | D: skull | 4,992 |
Elements are defined by their atomic number, a number that describes the amount of what in the element? Options: A: neutrons B: electrons C: bonds D: protons | D: protons | 4,993 |
What layer high in the atmosphere protects living things from most of the sun’s harmful uv rays? Options: A: stratosphere B: troposphere C: ozone layer D: Mesosphere | C: ozone layer | 4,994 |
How do some animals change their depth? Options: A: by changing their density B: metamorphosis C: mass migration D: spontaneous mutations | A: by changing their density | 4,995 |
Aluminosilicates are formed by replacing some of the si atoms in silicates by which atoms? Options: A: ce B: fe C: ad D: al | D: al | 4,996 |
Which kingdom are mosses and trees included in? Options: A: plant B: gymnosperm C: fungus D: protista | A: plant | 4,997 |
Many species use their body shape and coloration to avoid being detected by what? Options: A: predators B: males C: viruses D: biology | A: predators | 4,998 |
What kind of reactions absorb energy from their surroundings as they occur? Options: A: hydrostatic B: endothermic C: exothermic D: autotrophic | B: endothermic | 4,999 |
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