Which of the following statements are correct regarding ribosomes?
A. 70S ribosomes have two sub units 50S and 30S.
B. 80S ribosomes are present only in Eukaryotes.
C. 70S ribosomes are present both in Eukaryotes and prokaryotes.
D. Ribosomes are not bound by any membrane.

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ABC

ABCD

ABD

BCD

answer is D.

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Detailed Solution

Prokaryotic ribosomes, found in organisms like bacteria and archaea, are composed of two subunits. These are the small subunit (30S) and the large subunit (50S). In eukaryotic cells, which include those of animals, plants, fungi, and protists, ribosomes are also composed of two subunits. They are the small subunit (40S) and the large subunit (60S). 70S ribosomes are present both in eukaryotes and prokaryotes. Ribosomes are not membrane bound.

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