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NEET 2012

Exam: NEET
Year: 2012
Subject: Botany
Chapter: Cell - The Unit of Life

NEET 2012 · Botany · Cell - The Unit of Life

What is true about ribosomes?

What is true about ribosomes?

Options

AThe prokaryotic ribosomes are $80 \mathrm{~S}$ , where $S$ stands for sedimentation coefficient
BThese are composed of ribonucleic acid and proteins
CThese are found only in eukaryotic cells
DThese are self-splicing introns of some RNAs

Correct answer

B. These are composed of ribonucleic acid and proteins

Step-by-step solution

Ribosomes are large, non-membranous, RNA-protein complexes which are necessary for protein synthesis. In prokaryotes,

70 \mathrm{~S}

type of ribosomes are found while

80 \mathrm{~S}

type of ribosomes are found in eukaryotes.

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