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 create phosphodiester bonds, linking DNA fragments essential for replication and repair.
- (B) Incorrect: While conjugated proteins possess prosthetic groups, this information is irrelevant to the correct answer.
- (C) Correct: Competitive inhibition is reversed by elevated substrate concentration, a defining characteristic.
- (D) Correct: Anomers are sugar stereoisomers distinct at the carbonyl (anomeric) carbon.