Question

define enzyme.
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Answer 1

Answer:

Enzymes are proteins that act as biological catalysts. Catalysts accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products

Explanation:

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Answer 2

Answer:

What is an enzyme  

Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. ... Enzymes are highly selective catalysts, meaning that each enzyme only speeds up a specific reaction