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Glossary of Terms > G


Earth's Gravity. Has an approximate value of 9.8m/s/s (metres per second per second).

An hereditary unit of an organism. A linear sequence of nucleotides along a segment of DNA that provides the coded instructions for synthesis of RNA, which, when translated into protein, leads to the expression of hereditary character.


The major carbohydrate in starch and fruit sugar. Commonly available in the form of a white substance or as a solid crystal. It can also be commonly found as an aqueous solution.


A flexibe tube sometimes containing electrical wires which can be bent into desired shapes. Used in desklamps and document cameras.