Non-NBME Question - dh11

[ArchivalUser]

During synthesis of mature collagen fiber, which one of the following steps would occur within the fibroblast?
A. Hydrolysis of procollagen to form collagen
B. Glycosylation of proline residues
C. Formation of a triple helix
D. Formation of covalent cross-links between molecules
E. Assembly of the collagen fiber

The answer is C but I thought C occurs inside ER, please help.
Thanks

[ArchivalUser]

check FA..dey have given exp regardin inside and outside fibroblast...i think dis qs is from uwsa2.

[ArchivalUser]

is it really necessary to study High yield Anatomy?or kaplan in enough?
tnx alot