Question

Which among the following is incorrect about ribosomes?

(a) Ribosomes are granule like structures without any membrane that act as site for protein synthesis

(b) The size of the ribosomes are expressed using their sedimentation coefficients and is denoted by S, where S denotes to sub – units

(c) Eukaryotic and prokaryotic ribosomes are 80S and 70S respectively

(d) Eukaryotic ribosome further contains two unequal sub-units, 40S and 60S

The question was asked in an online interview.

I'd like to ask this question from Organelles in Eukaryotic and Prokaryotic Cells topic in chapter Cell : The Unit of Life of Biology – Class 11

Answer 1

Correct answer is (a) Ribosomes are granule like structures without any membrane that act as site for protein synthesis

The explanation is: Ribosomes are granule like structures without any membrane that act as site for protein synthesis. The size of the ribosomes are expressed using their sedimentation coefficients and is denoted by S, where S denotes to Svedberg unit. Eukaryotic and prokaryotic ribosomes are 80S and 70S respectively. Eukaryotic ribosome further contains two unequal sub-units, 40S and 60S.