Question

Which of the following is TRUE regarding Golgi?

Select one:

a. Carbohydrates are only added to proteins in the golgi

b. The Golgi's function is to produce vesicles containing products destined for export from the cell. All vesicles leaving the Golgi are destined for the plasma membrane.

c. All eukaryotic proteins are folded in the Golgi

d. The Golgi receives proteins from the ER then further modifies them.

Answer 1

The statement that is TRUE regarding Golgi is option d. The Golgi receives proteins from the ER then further modifies them.

Explanation -

• Carbohydrates (N-linked oligosaccharides) are added to proteins in the Endoplasmic Reticulum (ER). Hence, option a. is incorrect.
• It is true that Golgi's function is to produce vesicles containing products destined for export from the cell, but not all vesicles leaving the Golgi are destined for the plasma membrane. There are three main destinations i.e inside the cell to lysosomes, the plasma membrane and outside the cell. Thus, option b. is incorrect too.
• Endoplasmic Reticulum (ER) is also the site of protein folding, assisted by the molecular chaperones that facilitate the folding of polypeptides. Hence, option c. is incorrect.
• The proteins received from Endoplasmic Reticulum (ER) are then processed and sorted (modified) in Golgi. Therefore, option d. is correct.