A) (A) and (R) are true and (R) is the correct explanation of
B) (A) and (R) are true but (R) is not the correct explanation of
C) (A) is true but (R) is false
D) (A) is false but (R) is true
Correct Answer: B
Solution :
The ribosomes occur in all cells both Prokaryotic and eukaryotic cells with the exception of mammalian RBCs. In prokaryotic cells the ribosomes often occur freely in the cytoplasm. In eukaryotic cells the ribosomes either occur freely in the cytoplasm or remain attached to the outer surfaces of the endoplasmic reticulum and nuclear envelope. Ribosomes are considered as the most primitive cell organelles.
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