Question Detail

MIC 121 MCB 102 BACTERIA Objective Question

Question

What is the sedimentation rate (S value) of bacterial ribosomes, which distinguishes them from eukaryotic ribosomes?
Options
A 80S
B 70S
Correct Answer
C 60S
D 50S
Correct Answer

Option B is the correct answer.

Detailed Explanation

Bacterial ribosomes are 70S particles, comprising a 50S large subunit and a 30S small subunit. Eukaryotic ribosomes are larger, at 80S, which is an important target for certain antibiotics.

Hint

Remember that prokaryotic ribosomes are smaller than eukaryotic ribosomes.

Question Info