What is true about ribosomes

Options

(a) The prokaryotic ribosomes are 80S, where “S” stands for sedimentation coefficient
(b) These are composed of ribonucleic acid and proteins
(c) These are found only in eukaryotic cells
(d) These are self-splicing introns of some RNAs

Correct Answer:

These are composed of ribonucleic acid and proteins

Explanation:

Ribosomes are amembraneous (ie. without membrane) cell organelle composed of rRNA and protein. These are found in both prokaryotic and eukaryotic cells. In prokaryotes, ribosomes are 70S type while in eukaryotes, it is 80S type.