GED Science Questions with accurate answers/ 100% verified. Rated A

GED Science Questions with accurate answers/ 100% verified. Rated A 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 Atomic fusion - 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 - An upper chamber of the heart thatnreceives blood from the veins-also called the atrium Autotroph - Organism (a green plant) that nourishes itself by making organic materials out of inorganic Auxin - a plant hormone that promotes root formation and bud growth Bacillus - aerobic rod-shaped spore-producing bacterium Bacteria - (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission Balance in Nature - the balence of animals and palntes in their enviroment Barometer - an instrument that measures atmospheric pressure Basel Metabolism - A term used to discribe the amount of energy the body expends when in a inactive or basic (basal) state. Base - any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water Bedrock - solid unweathered rock lying beneath surface deposits of soil Benign Tumor - a tumor that is not cancerous Bile - a digestive juice secreted by the liver and stored in the gallbladder Binomal Nomenclature - 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 - a major biotic community characterized by the dominant forms of plant life and the prevailing climate Biospy - taking out and examining living tissue from a living thing Brain - that part of the central nervous system that includes all the higher nervous centers Bronchial Tube - one of the pair of tubes that branch off from the trachea and go into the lungs Calorie - 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 - any malignant growth or tumor caused by abnormal and uncontrolled cell division Capillary - long and slender with a very small internal diameter Capacitor - An electrical device used to store electrical charge. Carbohydrate - an essential structural component of living cells and source of energy for animals Carbon Dioxide - a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances Carbon Monoxide - an odorless very poisonous gas that is a product of incomplete combustion of carbon Carcinoma - A cancerous tumor Carnivore - any animal that feeds on flesh Cartilage - strong connective tissue that supports the body and is softer and more flexible than bone Catalyst - (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected Cathode - a negatively charged electrode that is the source of electrons in an electrical device Cell - (biology) the basic structural and functional unit of all organisms Cell Membrane - thin, flexible barrier around a cell; regulates what enters and leaves the cell Cellulose - polysaccharide consisting of glucose monomers that reinforces plant-cell walls Cell Wall - strong layer around the cell membrane in plants, algae, and some bacteria Celsius - The metric unit of temperature measurement. Chemotherapy - the administration of drugs that harm the cancer cells, but that do not harm the client, or at least do not harm the client as much as the disease does Chitan - a carbohydrate polymer that provides structure in shells of insects and lobsters Chlorophyll - any of a group of green pigments found in photosynthetic organisms Chloroplast - organelle found in cells of plants and some other organisms that captures the energy from sunlight and converts it into chemical energy Cholesterol - a type of fat made by the body from saturated fat; a minor part of fat in foods Chromsome - structure in a cells nucleus that contains hereditary material clay - a very fine-grained soil that is plastic when moist but hard when fired climate - the weather in some location averaged over some long period of time comet - space object made of dust and rock particles mixed with frozen water, methane, and ammonia that forms a bright coma as it approaches the Sun compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weight condensation - the process of changing from a gaseous to a liquid or solid state conductor - a device designed to transmit electricity, heat, etc. conglomerate - a composite rock made up of particles of varying size conservation - the preservation and careful management of the environment and of natural resources constellation - A group of stars that form a pattern in the sky cornea - transparent anterior portion of the outer covering of the eye coronary - the weaking of metal corpuscle - either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets corrosion - the gradual wearing away of a metal element due to a chemical reaction cyclone - (meteorology) rapid inward circulation of air masses about a low-pressure center cyclotron - an accelerator that imparts energies of several million electron-volts to rapidly moving particles cytoplasm - a jellylike fluid inside the cell in which the organelles are suspended