Question

Larger subunit of 80S ribosome is:

• A. 50S
• B. 40S
• C. 30S
• D. 60S

Answer 1

The correct option is D 60S

Prokaryotes have 70S ribosomes, which are made up of two subunits 30S and 50S.

Eukaryotic cells on other hand, have 80S ribosomes, which are made up of two subunits 60S and 40S. Thus, the larger subunit of 80S ribosome is 60S subunit.

The letter S stands for 'Svedberg', a unit of measurement of the rate of sedimentation of a molecule. This means an 80S particle will sediment quickly than a 70s particle.

Hence, the correct answer is '60S'.