Question

The RER in the cell synthesised protein which would be later used in building the plasma membrane. But it is observed that the protein in the membrane is slightly different from the protein made in the RER. The protein was probably modified in another cell organelle. Identify the organelle which is responsible for protein modification from the given diagram.

• A. D
• B. A
• C. B
• D. C

Answer 1

The correct option is A D

Proteins are synthesised by the rough endoplasmic reticulum. The plasma membrane consists of glycoproteins. In Golgi bodies, glycosylation of proteins takes place, i.e., addition of carbohydrate to produce glycoproteins which are present in the plasma membrane. Hence, the protein is modified in Golgi complex which is represented by D.