Question

# Which of these is not correct regarding ribosomes?

A
Non-membrane bound
B
Present in the cytoplasm and on RER
C
Absent in chloroplast and mitochondria
D
Take part in protein synthesis

Solution

## The correct option is C Absent in chloroplast and mitochondriaRibosomes are naked ribonucleoprotein protoplasmic particles (RNP) which function as a site for protein synthesis. Depending upon the location of their occurrence, ribosomes are of two types, cytoplasmic and organelle. The organelle ribosomes are found in plastids (plasitdoribosomes) and mitochondria (mitoribosomes) which are $$70S$$ in nature. The cytoplasmic ribosomes (cytoribosomers) may remain free in the cytoplasmic matrix or are attached to the cytosolic surface of endoplasmic reticulum. So, the correct answer is 'Absent in chloroplast and mitochondria'.Biology

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