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| the smallest unit that can perform all life prcesses; cells are covered by a membrane and have DNA and cytoplasm |
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| anything that causes a reaction or change in an organism or any part of an organism |
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| the maintenance of a constant unternal state in a changing enviroment |
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| reproduction in which sex cells from two parents unite, producing offspring that share traits from both parents |
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| reproduction in which one parent produces offspring identical to itself |
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| the passing of genetic traits from parent to offspring |
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| the sum of all chemical processes that occur in an organism |
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| an organism that can make it's own food by using energy from its surroundings |
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| an organism that eats other organisms or organic matter |
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| an organism that gets energy by breaking down the remains of dead organisms or animal wastes and consuming or absorbing nutrients |
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| a molicule that is made up of amino acids and that is needed to build and repair the body |
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| a class of energy giving nutrients that includes sugars, starches, and fiber; contains carbon, hydrogen, and oxygen |
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| a type of biochemical that does not disolve in water; fats and steroids are lipids |
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| a lipid that contains phosphorus and that is a structural component in cell membranes |
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| adonosine triphosphate, a molecule that acts as the maine energy for cell procesess |
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| a molecule that is made up of subunits called nucleotides |
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| an organism that consists of a single cell that does not have a nucleus |
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| a form of asexual reproduction in single-celled organisms by which devides into two cells of the same size. |
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| a thick-walled protective spore that forms inside a bacterial and resists harsh conditions |
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| the biological treatment of hazerdous waste |
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| medicine used to kill bacteria and other microorganisms |
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| bacteria that cause disease |
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| a microscopic particle that gets inside a cell and often destroys the cell |
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| an organism from which a parasite takes food or shelter |
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| an organism that belongs to the kingdom of protists |
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| an organism that gets food by eating other organisms or their byproducts and that cannot make organic compounds from inorganic material |
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| an organism that feeds on an organism of another species (the host) and that usually harms the host; the host never benfits from the presence of the parasite |
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