Question

Identify the statements true for RNA. (i) RNA acts as a genetic material for some viruses.
(ii) RNA also functions as an adapter molecule.
(iii) RNA has hexose sugar as its backbone.
(iv) RNA also acts as catalyst in some cases.

• A. (i), (ii) and (iii) only
• B. (i), (ii) and (iv) only
• C. (ii), (iii) and (iv) only
• D. (i), (iii) and (iv) only

Hint:

RNA is unique because it can store information, act as an adapter, and also function as a catalyst.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
RNA (Ribonucleic Acid) is a versatile molecule capable of coding, decoding, regulation, and catalysis within cells.
Step 2: Detailed Explanation:
(i) True: Many viruses, such as HIV and Influenza, use RNA as their genetic material.
(ii) True: tRNA (transfer RNA) acts as an adapter molecule by carrying specific amino acids to the ribosome during translation.
(iii) False: RNA backbone is composed of pentose sugar (specifically ribose), not hexose.
(iv) True: RNA molecules with catalytic activity are known as ribozymes (e.g., peptidyl transferase).
Since statements (i), (ii), and (iv) are correct, option (B) is the accurate choice.
Step 3: Final Answer:
The correct option is (B).