Enzymes are proteins that function as catalysts in biological reactions, accelerating processes such as digestion. They are composed of amino acids, which determine their specific structure and function. Enzymes play a vital role in various physiological processes in living organisms. ;
Enzymes are proteins that act as catalysts in biological reactions, speeding up processes without being consumed. They are composed of amino acids, which determine their structure and function, playing crucial roles in various physiological activities. Thus, the correct answer is B. proteins.
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