An activated enzyme consisting of polypeptide chain and a cofactor is called?
Correct answer: B. Holoenzyme
- A. Apoenzyme
- B. Holoenzyme
- C. Activated enzyme
- D. Both B and C
Explanation
Correct option is B. The answer is holoenzyme. An enzyme is a protein that catalyzes a chemical reaction. Some enzymes are composed solely of protein, while others also have a non-protein part known as a cofactor. The cofactor is essential for the proper functioning of the enzyme. An activated enzyme consisting of a polypeptide chain and a cofactor is called a holoenzyme. The polypeptide chain is the protein part of the enzyme, and the cofactor is the non-protein part. The cofactor is often essential for the enzyme to bind to its substrate, and it may also play a role in the catalysis of the reaction.
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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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