cell in you are kept alive by a series of chemical reactions inside them. Collectively this is called your metabolism. For most of these reactions a molecule called an enzyme is needed to make it happen. Enzymes are complicated strips of protein that fold up into a specific shape. Thing is, they’re only the correct shape at a certain temperature, which is when they work best. That’s why your body tries to keep your temperature at a constant level. Bacteria have a similar system, so they have working enzymes and can make the most energy when they are warm. More energy means they can reproduce more more easily, so the colony grows.
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