Ribosomes can be found free in the cytosol and fixed on the endoplasmic reticulum.

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Study for the Galen Anatomy and Physiology (AandP) 1 Theory Exam 2. Gain confidence with flashcards, pinpoint areas needing focus, and strengthen understanding through detailed explanations. Excel in your exam with comprehensive preparation!

Multiple Choice

Ribosomes can be found free in the cytosol and fixed on the endoplasmic reticulum.

Explanation:
Ribosomes come in two populations: free in the cytosol and bound to the rough endoplasmic reticulum. The bound, fixed ribosomes attach to the ER and give it a rough appearance; they synthesize proteins that are secreted, inserted into membranes, or directed to lysosomes. Free ribosomes, on the other hand, produce proteins that remain in the cytosol or are imported into other organelles after synthesis. Because ribosomes can be both free and ER-bound, the statement is true.

Ribosomes come in two populations: free in the cytosol and bound to the rough endoplasmic reticulum. The bound, fixed ribosomes attach to the ER and give it a rough appearance; they synthesize proteins that are secreted, inserted into membranes, or directed to lysosomes. Free ribosomes, on the other hand, produce proteins that remain in the cytosol or are imported into other organelles after synthesis. Because ribosomes can be both free and ER-bound, the statement is true.

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