CAPF AC 2022 PYQ with Answer — Lysosomes are sacs of the cell filled with digestive enzymes. These d…

2022 · Q38

Lysosomes are sacs of the cell filled with digestive enzymes. These digestive enzymes are synthesized by

general-sciencebiology-human-body

AGolgi bodies
Bsmooth endoplasmic reticulum
Crough endoplasmic reticulum
Dlysosome itself

Explanation

Answer key disputed — verify against the official UPSC key. Strictly speaking, lysosomal digestive enzymes are proteins synthesised by ribosomes on the rough endoplasmic reticulum (option C) and only subsequently modified, tagged (e.g., with mannose-6-phosphate) and packaged into lysosomes by the Golgi apparatus (option A) — the Golgi does not synthesise proteins. Several coaching keys treat 'Golgi bodies' as the answer because lysosomes are described as being 'formed/manufactured' by the Golgi. On the precise wording 'synthesised by', the biologically exact answer is the rough endoplasmic reticulum. The stored key (A, Golgi bodies) is retained here pending the official UPSC key.