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all the chemical reactions involved in maintaining the living state of the cells and the organism.
outgrowths that transmit nerve impulses away from the cell body of a neuron.
an organ system that passes nutrients, gases, hormones, blood cells, etc. to and from cells in...
drugs that are used to treat infections caused by bacteria. Many antibiotics are produced by...
(SO2) a colourless gas that smells of rotten eggs or burnt matches and is produced by...