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Ribosomes Are Not Bound To Membranes

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Ribosomes Are Not Bound To Membranes
Ribosomes, which consist of rRNA and proteins, synthesize proteins. Ribosomes are not considered organelles because ribosomes are not bound to membranes. Some ribosomes stud the rough endoplasmic reticulum and nuclear envelope, and thus are considered to be bound ribosomes; others are free ribosomes that are suspended within cytosol. Free ribosomes synthesize proteins that function suspended in cytosol. Bound ribosomes produce proteins that will inevitably be inserted in a membrane. Ribosomes are most plentiful in cells that synthesize an abundance of proteins. The pancreas, an organ where the production of enzymes are a commonplace, contains a plethora of ribosomes.
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