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Name the site where secreted protein synthesized?

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Name the site where secreted protein synthesized?

(a) ER membrane bound ribosomes

(b) Mitochondrial ribosome

(c) Membrane free ribosome

(d) Chloroplast ribosome

I got this question by my college professor while I was bunking the class.

The doubt is from Ribosome in section Cell Structure and Functions of Life Sciences

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The correct choice is (a) ER membrane bound ribosomes

To elaborate: Secreted proteins pass through ER-Golgi system, so, these are synthesized on ER membrane-bound ribosomes while proteins that are imported into organelles like mitochondria, nucleus, and chloroplast are synthesized on membrane free ribosomes.

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