Biology for IGCSE & O level - Enzymes (Section 1 - No. 38)
Which of the following statements accurately describes how enzymes and substrates interact?
The substrate fits perfectly into the enzyme's active site.
The enzyme alters shape after binding to the substrate.
The enzyme's active site has a shape that matches the substrate.
Enzymes and substrates bind together through covalent bonds.
Explanation
The complementary shapes are vital for enzyme-substrate binding, leading to the catalytic reaction. Although bonds can form between the enzyme and the substrate, the interaction is not limited to covalent bonds, and the enzyme returns to its original shape after the reaction. Therefore only the correct statements were chosen.
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