An '''enzyme''' is a [[protein]] produced by a living organism that functions as a [[catalyst]]. Enzymes increase the speed of chemical reactions within an organism's body. They are essential to functions such as digestion.
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An '''enzyme''' is a [[protein]] produced by a living organism that functions as a [[catalyst]]. Enzymes increase the speed of chemical reactions within an organism's body. They are essential to functions such as digestion. Human life would end if enzyme stop working. A tempurature of 106 F (41.5 C), or more, can change the shapes of enzymes so the can no longer function.