Question

Read the following statements carefully:
(A) DNA ligases are enzymes that create a phosphodiester bond between DNA fragments.
(B) A protein containing one or more prosthetic groups is called a conjugated protein.,
(C) A type of enzyme inhibition reversed by increasing the substrate concentration is called competitive inhibition.
(D) Two stereoisomers of a given sugar that differ only in the configuration about carbonyl
carbon atom are called anomers.
Choose the correct answer from the options given below:

• A. (A), (B), and (C) only
• B. (A), (B) and (D) only
• C. (A), (C), and (D) only
• D. (B), (C), (D) only

Hint:

Competitive inhibition can be ”outcompeted” with more substrate, and anomer differ at the ”anomeric” carbon.

Answer 1

The Correct Option is C

- (A) Correct: DNA ligases form phosphodiester bonds to join DNA fragments, crucial for replication and repair.
- (B) Incorrect: Conjugated proteins contain prosthetic groups, but this is not relevant to the correct answer in this context.
- (C) Correct: Competitive inhibition is reversible by increasing substrate concentration, a key feature of this type of inhibition.
- (D) Correct: Anomers are stereoisomers of sugars differing at the carbonyl carbon atom (anomeric carbon).