The active site of the enzyme is the region that:
Correct answer: B. Is involved in catalytic reactions
- A. Binds with the product of catalytic reaction
- B. Is involved in catalytic reactions
- C. Is inhibited by coenzymes and cofactors
- D. Binds allosteric regulators of the enzyme
- E. Is inhibited by coenzymes only
Explanation
The active site of an enzyme is crucial because it is the region where substrates bind and undergo chemical transformation during a catalytic reaction. This is what makes Option B correct. The other options are incorrect because they either misunderstand the role of the active site or confuse it with other parts of the enzyme, such as allosteric sites or the role of cofactors and coenzymes. Coenzymes and cofactors often assist in the enzyme's function, rather than inhibit the active site, and allosteric regulators affect enzyme activity through different sites.
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About Enzymes
Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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