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GED SCIENCE EXAM WITH QUESTIONS AND VERIFIED ANSWERS
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GED SCIENCE EXAM WITH QUESTIONS AND VERIFIED ANSWERS Abiogenesis - ANSWER Belief that living creatures can emerge from dead substances Acid - ANSWER A chemical that creates hydrogen ions in water, usually tastes sour, and has a pH lower than 7. Acid rain is rain containing acids that occur in the atmosphere when indust rial gas emissions (particularly sulfur dioxide and nitrogen oxides) interact with water. Alloy - A homogeneous alloy made up of two or more metals. Amoeba is a type of protozoan with no stable shape. Amorphous means having no defined form or identifiable shape. Amplitude is the greatest value of a wave or vibration. ANSWER Anaerobic respiration is fermentation or respiration in the absence of oxygen. Anemia is the lack of a normal number of red blood cells. Anode is the positive electrode of an electrolytic cell, the negative terminal of a battery, the negative plate of a vacuum tube, or the site of oxidation. Antibiotic is a chemical that inhibits the development and reproducti on of bacteria. Antibody - ANSWER A protein, usually found in an organism's blood, that works to neutralize the effects of disease-causing bacteria or viruses. Antidote is a medicine that prevents or reduces the effects of a toxin. Anticeptic - A chemical that inhibits the development or action of germs. Antitoxin - A substance in the body that neutralizes poisons. Appendix - ANSWER A wormlike, narrow portion of the alimentary canal locat ed in the lower right part of the human abdomen. Armature is a piece of metal or a coil of wire that travels back and forth, or rotates, in a magnetic field. An artery is a blood vessel that transports blood from the heart to the rest of the body. Arthropods are a collection of creatures with jointed legs, an exoskeleton, bilateral symmetry, and sexual reproduction, including insects, arachnids, mil lipedes, cenitpedes, and crustaceans. Citrus fruits, tomatoes, and green vegetables contain ascorbic acid, sometimes known as vitamin C. Aseptic means free of living microorganisms. Asexual reproduction entails producing offspring without the invol vement of individual or germ cells. Assimilation is the process by which the body uses digested food t o grow or repair cells. Assimilation is the process by which the body uses digested food t o grow or repair cells. Asteroid - ANSWER One of the "minor plants" between Mars and Jupiter, of which approximately 1,500 are known. The entire mass of gases around a planet is referred to as its atmosphere. Atom - ANSWER smallest particle of an element, consisting of a nucleus surrounded bynelectrons Atomic fission is the breakdown of an atomic nucleus into two or more components, resulting in a significant release of energy. ANSWER Atomic fusion is the merging of atomic nuclei to form heavier nuclei, such as deuterium (heavy hydrogen) and tritium (another isotope of hydrogen) t o make helium, leading in the release of tremendous amounts of energy. Auricle - ANSWER An upper chamber of the heart that collects blood from the veins, also known as the atrium Autotroph - ANSWER Organism (a green plant) that supports itself by producin g organic components from inorganic Auxin is a plant hormone that promotes root development and bud expa nsion. Bacillus is an aerobic, rod-shaped spore-producing bacterium. Bacteria - Answer (microbiology) single-celled or noncellular spherical, spira l, or rod-shaped creatures lacking chlorophyll that reproduce via fission. Balance in Nature: ANSWER the balance of animals and plants in their environment. Barometer is an instrument that measures atmospheric pressure. Basel Metabolism - ANSWER A phrase that describes how much energy the bod y expends when it is sedentary or basic (basal). A base is any water-soluble substance that can turn litmus blue and react wit h an acid to produce salt and water. Bedrock is a solid, unweathered rock that lies beneath soil deposits on the surface. Benign Tumor - A tumor that is not malignant. Bile is a digestive liquid produced by the liver and retained in the gallbla dder. Binomal nomenclature is a naming system for organisms in which each creature is given a two-part name --a genus name of various species in a region. A biome is a significant biotic community characterized by the primary forms of plant life and the prevailing climate. Biospy - ANSWER extracting and analyzing live tissue from a living bei ng The brain is the component of the central nervous system that houses all of th e higher nerve centers. Bronchial tube is one of the two tubes that branch out from the trachea and enter the lungs. Calorie is a unit of heat defined as the amount of heat necessary to raise the temperature of one gram of water by one degree centigrade under atmospheric pressure. Cancer - A malignant growth or tumor produced by abnormal and uncontrolled cell division. Capillary - Answer: long and narrow with a very small internal diameter.The benefits of buying summaries with Stuvia:
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