GED Science Practice Concepts with Complete Solutions

Abiogenesis Correct Answer Belief that livings things may develop from lifeless matter Acid Correct Answer A compound that In water produces hydrogen ions, usually tastes sour, a pH less than 7 Acid rain Correct Answer rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water Alloy Correct Answer Homogenous mixture composed of two or more metals Amoeba Correct Answer A type of Protozoan that has no permanent shape Amorphous Correct Answer having no definite form or distinct shape Amplitude Correct Answer The maximum value of a wave or vibration Anaerobic respiration Correct Answer Fermentation, or respiration in the absence of oxygen Anemia Correct Answer lack of a normal number of red blood cells Anode Correct Answer Positive electrode of an electrolytic cell; negative terminal of a battery; negative plate of a vacuum tube; site where oxidation occurs Antibiotic Correct Answer compound that blocks the growth and reproduction of bacteria Antibody Correct Answer A protein, usually in the blood of an organism, that serves to counteract the effects of disease-producing bacteriabor viruses Antidote Correct Answer a remedy that stops or controls the effects of a poison Anticeptic Correct Answer A substance that prevents the growth or activity of bacteria Antitoxin Correct Answer Substance in the body neutralizes toxins Appendix Correct Answer Wormlike, narrow part of the alimentary canal, in the lower right-hand part of the human abdomen