Cell Biology: Endosomes

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Questions and Answers

What is one primary function of endosomes?

Synthesis of proteins
Uptake of soluble macromolecules from the cell exterior (correct)
Production of energy
Storage of carbohydrates

Endosomes only transport proteins to the plasma membrane without further sorting.

False (B)

What happens to the contents of late endosomes?

They are delivered to the lysosomes for degradation.

Endosomes act as a sorting station for ___________ bound vesicles.

<p>membrane</p> Signup and view all the answers

Match the following terms with their corresponding functions:

<p>Endocytosis = Intake of macromolecules from the exterior Late endosome = Further sorting of membrane proteins Lysosome = Degradation of internal contents Recycling = Return of proteins to the plasma membrane</p> Signup and view all the answers

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Study Notes

Endosomes

Endosomes are membrane-bound vesicles that act as sorting stations for materials taken up from the cell's exterior through endocytosis.
These vesicles collect soluble macromolecules and sort them for further processing.
Some membrane proteins are recycled back to the plasma membrane, while others are transported to late endosomes.
Late endosomes further sort the internal contents and deliver them along with their membrane to lysosomes for degradation.