An activated enzyme consisting of polypeptide and a cofactor is known as:
Correct answer: C. Holoenzyme
- A. Amylase
- B. Apoenzyme
- C. Holoenzyme
- D. Coenzyme
Explanation
Option A is incorrect because Amylase is the enzyme that breakdown carbohydrates.Option B is incorrect because Apoenzyme is the enzyme with its cofactor removed it is non functional.Option C is correct since Holoenzyme is an activated enzyme consisting of polypeptide and a cofactor.Option D is incorrect because Coenzyme is a type of cofactor that loosely attached to the protein part.
This question appeared on the UHS MDCAT 2011 paper, which you can sit online with every answer explained.
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About Characteristics of Enzymes
Enzymes are globular biological catalysts that lower activation energy without being consumed, usually showing specificity for particular substrates. Questions cover active sites, enzyme substrate complexes, the lock and key and induced fit models, intracellular and extracellular action, and the effects of denaturation, while distinguishing enzymes from non biological catalysts.
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