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OCR: Absolute zero The theoretical minimum temperature Absolute zero may be expressed aso degrees Kelvin or -273.15 Celsius Adaptation trait or physiology that makes an organism more able to adapt to an environment and successfully reproduce Aerobic in contact with or an organism that uses oxygen Amino Acid subunit ofa protein made up of a basic amine group and an acidic carboxylic group There are 20 organic amino acids and they differ only in the attachment one side chain. In the following formula for an amino acid the differing side chain is designated by an R, all other letters in the formula represent atoms: H2N -CHR COOH Anaerobic Metabolism The breakdown of sugars in the absence oxygen Anticodon sequence of three nucleotides on transfer RNA (tRNA). The "triplet" can line up along messenge ...