GED Science Study Guide.
Abiogenesis - answerBelief that livings things may develop from lifeless matter
Acid - answerA compound that In water produces hydrogen ions, usually tastes sour, a pH less
than 7
Acid rain - answerrain containing acids that form in the atmosphere when industrial gas
e...
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
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
Basel Metabolism - answer✔A term used to discribe the amount of energy the body expends
when in a inactive or basic (basal) state.
Base - answer✔any of various water-soluble compounds capable of turning litmus blue and
reacting with an acid to form a salt and water
Bedrock - answer✔solid unweathered rock lying beneath surface deposits of soil
Benign Tumor - answer✔a tumor that is not cancerous
Bile - answer✔a digestive juice secreted by the liver and stored in the gallbladder
Binomal Nomenclature - answer✔the naming system for organism in wich each organsim is
given a two part name-a genus name of different species in an area
Biome - answer✔a major biotic community characterized by the dominant forms of plant life
and the prevailing climate
Biospy - answer✔taking out and examining living tissue from a living thing
Brain - answer✔that part of the central nervous system that includes all the higher nervous
centers
Bronchial Tube - answer✔one of the pair of tubes that branch off from the trachea and go into
the lungs
Calorie - answer✔unit of heat defined as the quantity of heat required to raise the temperature of
1 gram of water by 1 degree centigrade at atmospheric pressure
Cancer - answer✔any malignant growth or tumor caused by abnormal and uncontrolled cell
division
Capillary - answer✔long and slender with a very small internal diameter
Capacitor - answer✔An electrical device used to store electrical charge.
Carbohydrate - answer✔an essential structural component of living cells and source of energy
for animals
Carbon Dioxide - answer✔a heavy odorless colorless gas formed during respiration and by the
decomposition of organic substances
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