Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

What is the most critical role of ribosomal RNA (rRNA) in cellular biology?
Options
A Packaging of DNA
B Structural and enzymatic role in protein synthesis
Correct Answer
C Energy transport
D Catalyzing cell division
Correct Answer

Option B is the correct answer.

Detailed Explanation

rRNA is the main structural component of ribosomes. It also has catalytic functions; in the large ribosomal subunit, rRNA (not protein) catalyzes the formation of peptide bonds during translation (it is a ribozyme).

Hint

It forms the core of the ribosome and performs the key enzymatic reaction.

Question Info