Question

From the statements given below choose the correct option:

1. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are 70S.
2. Each ribosome has two sub-units.
3. The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S.
4. The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S.
5. The two sub-units of 80S are 60S and 30S and that of 70S are 50S and 30S.

विकल्प

• A, B, C are true

• A, B, D are true

• A, B, E are true

• B, D, E are true

Answer 1

A, B, C are true

Explanation:

The 80S type of eukaryotic ribosomes is composed of the 60S and 40S subunits. 50S and 30S subunits make up 70S prokaryotic ribosomes. These ‘S’ values, which are expressed in Svedberg units and represent the sedimentation rate during centrifugation, are not numerically additive due to their density and shape. There are two subunits in every ribosome. As a result, claims A, B, and C are true.