GED Science practice questions with
answers
Abiogenesis - Answer - Belief that livings things may develop from lifeless matter
Acid - Answer - A compound that In water produces hydrogen ions, usually tastes sour, a pH less than 7
Acid rain - Answer - rain containing acids that form in the atmosphere when industrial gas emissions
(especially sulfur dioxide and nitrogen oxides) combine with water
Alloy - Answer - Homogenous mixture composed of two or more metals
Amoeba - Answer - A type of Protozoan that has no permanent shape
Amorphous - Answer - having no definite form or distinct shape
Amplitude - Answer - The maximum value of a wave or vibration
Anaerobic respiration - Answer - Fermentation, or respiration in the absence of oxygen
Anemia - Answer - lack of a normal number of red blood cells
Anode - Answer - Positive electrode of an electrolytic cell; negative terminal of a battery; negative plate
of a vacuum tube; site where oxidation occurs
Antibiotic - Answer - compound that blocks the growth and reproduction of bacteria
, Antibody - Answer - A protein, usually in the blood of an organism, that serves to counteract the effects
of disease-producing bacteriabor viruses
Antidote - Answer - a remedy that stops or controls the effects of a poison
Anticeptic - Answer - A substance that prevents the growth or activity of bacteria
Antitoxin - Answer - Substance in the body neutralizes toxins
Appendix - Answer - Wormlike, narrow part of the alimentary canal, in the lower right-hand part of the
human abdomen
Armature - Answer - A piece of metal or a coil of wire that moves back and forth, or rotates, in a
magnetic field
Artery - Answer - a blood vessel that carries blood away from the heart to the periphery of the body
Arthropods - Answer - A group of organisms that have jointed appendages, an exoskeleton, bilateral
symmetry, and reproduce sexually; insects, arachnids, millipedes and cenitpedes, and crustaceans
Ascorbic acid - Answer - Vitamin C; found in citrus fruits, tomatoes, and green vegetables
Aseptic - Answer - Free of living bacteria
Asexual reproduction - Answer - Producing offspring without inion of individulaln or germ cells
Assimilation - Answer - Process by which digested food is utilized by the body to build up or repair cells
Assimilation - Answer - Process by which digested food is utilized by the body to build up or repair cells
, Asteroid - Answer - One of a group of "minor plants" between Mars and Jupiter, of which about 1,500
are known
Atmosphere - Answer - The whole mass of gases surrounding a planet
Atom - Answer - smallest particle of an element, consisting of a nucleus surrounded bynelectrons
Atomic fission - Answer - The breaking down of an atomic nucleus, into two or more parts, with a great
release of energy
Atomic fusion - Answer - The joining of atomic nuclei to form heavier nuclei, such as deuterium (heavy
hydrogen) and tritium (another isotope of hydrogen) to make helium, resulting in the release of
enormous quantities of energy
Auricle - Answer - An upper chamber of the heart thatnreceives blood from the veins-also called the
atrium
Autotroph - Answer - Organism (a green plant) that nourishes itself by making organic materials out of
inorganic
Auxin - Answer - a plant hormone that promotes root formation and bud growth
Bacillus - Answer - aerobic rod-shaped spore-producing bacterium
Bacteria - Answer - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped
organisms lacking chlorophyll that reproduce by fission
Balance in Nature - Answer - the balence of animals and palntes in their enviroment
Barometer - Answer - an instrument that measures atmospheric pressure
answers
Abiogenesis - Answer - Belief that livings things may develop from lifeless matter
Acid - Answer - A compound that In water produces hydrogen ions, usually tastes sour, a pH less than 7
Acid rain - Answer - rain containing acids that form in the atmosphere when industrial gas emissions
(especially sulfur dioxide and nitrogen oxides) combine with water
Alloy - Answer - Homogenous mixture composed of two or more metals
Amoeba - Answer - A type of Protozoan that has no permanent shape
Amorphous - Answer - having no definite form or distinct shape
Amplitude - Answer - The maximum value of a wave or vibration
Anaerobic respiration - Answer - Fermentation, or respiration in the absence of oxygen
Anemia - Answer - lack of a normal number of red blood cells
Anode - Answer - Positive electrode of an electrolytic cell; negative terminal of a battery; negative plate
of a vacuum tube; site where oxidation occurs
Antibiotic - Answer - compound that blocks the growth and reproduction of bacteria
, Antibody - Answer - A protein, usually in the blood of an organism, that serves to counteract the effects
of disease-producing bacteriabor viruses
Antidote - Answer - a remedy that stops or controls the effects of a poison
Anticeptic - Answer - A substance that prevents the growth or activity of bacteria
Antitoxin - Answer - Substance in the body neutralizes toxins
Appendix - Answer - Wormlike, narrow part of the alimentary canal, in the lower right-hand part of the
human abdomen
Armature - Answer - A piece of metal or a coil of wire that moves back and forth, or rotates, in a
magnetic field
Artery - Answer - a blood vessel that carries blood away from the heart to the periphery of the body
Arthropods - Answer - A group of organisms that have jointed appendages, an exoskeleton, bilateral
symmetry, and reproduce sexually; insects, arachnids, millipedes and cenitpedes, and crustaceans
Ascorbic acid - Answer - Vitamin C; found in citrus fruits, tomatoes, and green vegetables
Aseptic - Answer - Free of living bacteria
Asexual reproduction - Answer - Producing offspring without inion of individulaln or germ cells
Assimilation - Answer - Process by which digested food is utilized by the body to build up or repair cells
Assimilation - Answer - Process by which digested food is utilized by the body to build up or repair cells
, Asteroid - Answer - One of a group of "minor plants" between Mars and Jupiter, of which about 1,500
are known
Atmosphere - Answer - The whole mass of gases surrounding a planet
Atom - Answer - smallest particle of an element, consisting of a nucleus surrounded bynelectrons
Atomic fission - Answer - The breaking down of an atomic nucleus, into two or more parts, with a great
release of energy
Atomic fusion - Answer - The joining of atomic nuclei to form heavier nuclei, such as deuterium (heavy
hydrogen) and tritium (another isotope of hydrogen) to make helium, resulting in the release of
enormous quantities of energy
Auricle - Answer - An upper chamber of the heart thatnreceives blood from the veins-also called the
atrium
Autotroph - Answer - Organism (a green plant) that nourishes itself by making organic materials out of
inorganic
Auxin - Answer - a plant hormone that promotes root formation and bud growth
Bacillus - Answer - aerobic rod-shaped spore-producing bacterium
Bacteria - Answer - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped
organisms lacking chlorophyll that reproduce by fission
Balance in Nature - Answer - the balence of animals and palntes in their enviroment
Barometer - Answer - an instrument that measures atmospheric pressure
