An enzyme is commonly known as a biological catalyst. These are compounds usually found in living systems that speeds up specific reactions without being consumed in the process. Some enzymes are RNA molecules, known as ribozymes but most of these enzymes are proteins, or polymers of amino acids (polypeptides).
Which of the following is/are true of enzymes?
A. They are involved in almost all facets of a cell's metabolism.
B. They function by lowering activation energy of reactions.
C. are composed primarily of polypeptides, which are polymers of amino acids.
D. A and B are true
E. All of the above are true.
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