Ribosomes are small granules that help the cell make proteins. They are typically attached to which organelle?

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Multiple Choice

Ribosomes are small granules that help the cell make proteins. They are typically attached to which organelle?

Explanation:
Ribosomes are the machines that build proteins by translating mRNA. They can float freely in the cytoplasm, but when they are attached to a membrane network called the endoplasmic reticulum, that portion becomes the rough ER. Translation on the rough ER directs the new proteins into the ER lumen or into the membrane, which is ideal for proteins that will be secreted or integrated into cellular membranes. The nucleus isn’t a docking site for ribosomes; the Golgi apparatus works downstream to modify and package proteins rather than serve as a ribosome attachment point. So, ribosomes are typically attached to the endoplasmic reticulum.

Ribosomes are the machines that build proteins by translating mRNA. They can float freely in the cytoplasm, but when they are attached to a membrane network called the endoplasmic reticulum, that portion becomes the rough ER. Translation on the rough ER directs the new proteins into the ER lumen or into the membrane, which is ideal for proteins that will be secreted or integrated into cellular membranes. The nucleus isn’t a docking site for ribosomes; the Golgi apparatus works downstream to modify and package proteins rather than serve as a ribosome attachment point. So, ribosomes are typically attached to the endoplasmic reticulum.

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