MCQ – 65279

This structure is not found free in which of the following cell organelle?

A.	Cytoplasm
B.	Golgi apparatus
C.	Intracellular vesicles
D.	The lumen of endoplasmic reticulum

Show Answer

Correct Answer � A Explanation

This structure is collagen triple helix structure.

Collagen is synthesized on ribosomes as pre-pro-collagen.

From there it enters the endoplasmic reticulum where the signal sequence is removed from the terminal end and glycosylation and hydroxylation of proline and lysine residues occur, resulting in the formation of procollagen.