Question

when a glycoprotein is being synthesized for secretion from a cell which route is it most likely to take?

Answer 1

Explanation:

Proteins destined to be secreted move through the secretory pathway in the following order: rough ER → ER-to-Golgi transport vesicles → Golgi cisternae → secretory or transport vesicles → cell surface (exocytosis) (see Figure 17-13). Small transport vesicles bud off from the ER and fuse to form the cis-Golgi reticulum.

Answer 2

Answer:

Rough ER →→ Golgi apparatus →→ Cell membrane

Explanation:

• The endoplasmic reticulum, the Golgi apparatus, the vesicles that move between them, the cell membrane, and the lysosomes are all parts of the secretory pathway. It is known as a "secretory pathway" since it is how the cell releases proteins into the extracellular space.
• This system also breaks down lysosomal enzymes, membrane-bound proteins, and any proteins that spend their entire life in the secretory pathway.
• Ribosomes begin the process of synthesis of a protein. The Rough Endoplasmic Reticulum, or RER, contains ribosomes. Proteins are moved from the RER to the Golgi apparatus for post-translational alterations. Proteins are delivered to cells in membrane vesicles from the Golgi apparatus, where they are then absorbed by endocytosis through the invagination of the cell membrane.

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