Question

Enzyme Collagenase breaks the peptide bonds in the protein Collagen. Excessive secretion of this enzyme will lead to weakening of which of the following body parts?
i. Tendons
ii. Bones
iii. Hair shafts
iv. Nails and Claws
v. Intervertebral disc

• A. i, ii, iii
• B. i, ii, v
• C. iii, iv
• D. ii, iii, v

Answer 1

The correct option is B i, ii, v

Tendons are made up white fibrous tissue which mainly contains white / collagen fibers. Periosteum of bone also contains collagen. Intervertebral disc is made up of white fibro-cartilage which has collagen. So excessive secretion of this enzyme will lead to weakening of tendons, bones and invertebral disc.
Hair, Nail and Claw are modifications of skin so just like skin they contain Keratin.