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This Bio-Module requires the use of the text book "Exploring Life" by Professor John Blamire.
This is one piece of chemistry (and Biology) that predates written history. Fruit juices or mashed grains would undergo a change in which bubbles of gas were given off and the resulting liquids, when drunk, caused strange sensations in the consumer. The mechanism of change remained a mystery, however, until the invention of the microscope and the discovery of living cells.
(see enzyme)