Question

The digestive enzymes inside lysosomes are made by:

• A. rough endoplasmic reticulum
• B. plastids themselves
• C. Golgi apparatus
• D. mitochondria

Answer 1

Answer:

A. rough endoplasmic reticulum

• The rough endoplasmic reticulum (RER) is the primary site for the synthesis of proteins that are destined for secretion, insertion into membranes, or delivery to other organelles like lysosomes. • The RER's surface is studded with ribosomes, which are the cellular machinery responsible for translating messenger RNA (mRNA) into protein chains. • As ribosomes synthesize these proteins, they are threaded into the lumen (internal space) of the RER.