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any ingredient such as certain amino acid, fatty acid, vitamin, or mineral that cannot be formed by an organism and must be supplied in the diet
an organic compound such as a vitamin or amino acid that must be provided in the diet to facilitate growth; an essential nutrient
a microorganism that requires only inorganic nutrients and whose sole source of carbon is carbon dioxide
an organism that utlilizes light for its energy and carbon dioxide chiefly for its carbon needs
an organism that relies upon inorganic chemicals for its energy and carbon dioxide for its carbon
an organism that lives or within another organism (the host), from which it obtains nutrients and enjoys protection
a microbe whose growth is either stimulated by salt or requires high concentration of salt for growth
a microorganism that thrives at low temperatures with an optimum temperature at 0-15 deg. cel.
an intimate association between individuals from two species; used as a synonym for mutalism
a relationship between two organisms in which the host is harmed in some way while the colonizer benefits
the formation of two new cells approximately equal size as the result of parent cell division
maximum rate of cell division which growth is geometric in its rate of increase; also called exponenetial growth
stationary growth phase
phase when the population enters a survival mode in which cells stop growing or grow slowly
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