NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which phrase best describes rough ER?
A
studded with ribosomes
B
protected by vesicles
C
connected to the Golgi apparatus
D
stored in the central vacuole
Explanation: 

Detailed explanation-1: -Explanation: The answer is option A) studded with ribosomes.

Detailed explanation-2: -The rough ER, studded with millions of membrane bound ribosomes, is involved with the production, folding, quality control and despatch of some proteins. Smooth ER is largely associated with lipid (fat) manufacture and metabolism and steroid production hormone production. It also has a detoxification function.

Detailed explanation-3: -The RER is associated with many roles in protein synthesis, which also include post-translational modifications, folding, and sorting. Membrane-bound ribosomes in the RER translate the mature mRNA transcript into amino acids that are attached to become polypeptides.

Detailed explanation-4: -Ribophorin, also known as a ribosome receptor protein, is a transmembrane glycoprotein that aids in the binding of ribosomes to the endoplasmic reticulum’s outer surface, generating rough endoplasmic reticulum. They attach the ribosome’s larger subunit (the 50S) to the rough endoplasmic reticulum.

Detailed explanation-5: -The rough ER is studded with ribosomes. As proteins are synthesized, they are threaded into the lumen of the rough ER. Some of these proteins have carbohydrates attached to them in the ER to form glycoproteins.

There is 1 question to complete.