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Which statement best explains how enzymes speed up chemical reactions?
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6. Enzymes and Enzyme Kinetics
Enzymes
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Most enzymes are _____.
A
carbohydrates
B
nucleic acids
C
lipids
D
proteins
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Step 1: Begin by understanding the role of enzymes in biochemical processes. Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.
Step 2: Recall the major classes of biomolecules: carbohydrates, nucleic acids, lipids, and proteins. Each class has distinct functions and structures.
Step 3: Analyze the structural composition of enzymes. Enzymes are primarily composed of amino acids, which are the building blocks of proteins. This makes enzymes a type of protein.
Step 4: Consider the functional properties of proteins. Proteins are versatile molecules that can fold into specific shapes, enabling them to act as enzymes and bind to substrates with high specificity.
Step 5: Conclude that enzymes are proteins based on their structure and function, distinguishing them from carbohydrates, nucleic acids, and lipids, which serve different roles in the cell.
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