GED Science Questions with 100% Correct Solutions

Abiogenesis - Belief that livings things may develop from lifeless matter Acid - A compound that In water produces hydrogen ions, usually tastes sour, a pH less than 7 Acid rain - rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water Alloy - Homogenous mixture composed of two or more metals Amoeba - A type of Protozoan that has no permanent shape Amorphous - having no definite form or distinct shape Amplitude - The maximum value of a wave or vibration Anaerobic respiration - Fermentation, or respiration in the absence of oxygen Anemia - lack of a normal number of red blood cells Anode - Positive electrode of an electrolytic cell; negative terminal of a battery; negative plate of a vacuum tube; site where oxidation occurs Antibiotic - compound that blocks the growth and reproduction of bacteria Antibody - A protein, usually in the blood of an organism, that serves to counteract the effects of disease-producing bacteriabor viruses Antidote - a remedy that stops or controls the effects of a poison Anticeptic - A substance that prevents the growth or activity of bacteria Antitoxin - Substance in the body neutralizes toxins Appendix - Wormlike, narrow part of the alimentary canal, in the lower right-hand part of the human abdomen Armature - A piece of metal or a coil of wire that moves back and forth, or rotates, in a magnetic field Artery - a blood vessel that carries blood away from the heart to the periphery of the body Arthropods - A group of organisms that have jointed appendages, an exoskeleton, bilateral symmetry, and reproduce sexually; insects, arachnids, millipedes and cenitpedes, and crustaceans Ascorbic acid - Vitamin C; found in citrus fruits, tomatoes, and green vegetables Aseptic - Free of living bacteria Asexual reproduction - Producing offspring without inion of individulaln or germ cells Assimilation - Process by which digested food is utilized by the body to build up or repair cells Assimilation - Process by which digested food is utilized by the body to build up or repair cells Asteroid - One of a group of "minor plants" between Mars and Jupiter, of which about 1,500 are known Atmosphere - The whole mass of gases surrounding a planet Atom - smallest particle of an element, consisting of a nucleus surrounded bynelectrons Atomic fission - The breaking down of an atomic nucleus, into two or more parts, with a great release of energy