MCQ on Endoplasmic Reticulum – Structure and Functions

The endoplasmic reticulum (ER) is a cellular organelle involved in the synthesis, folding, and transport of proteins and lipids. It consists of a network of membranes within the cell, with rough ER studded with ribosomes for protein synthesis and smooth ER involved in lipid metabolism and detoxification. This is an MCQ on Endoplasmic Reticulum Structure and Functions.

|  Cell and Molecular Biology Notes  |  Cell and Molecular Biology PPT  |

1. 
What is the primary function of the Endoplasmic Reticulum (ER) in eukaryotic cells?

2. 
The ER is classified into two main types based on its structure and functions. What are these two types of ER?

3. 
Which type of ER is studded with ribosomes on its surface

4. 
The Rough ER is primarily involved in the synthesis of:

5. 
The process of protein synthesis on the Rough ER involves the assembly of amino acids into polypeptide chains. What cellular structure guides this process?

6. 
The Smooth ER lacks ribosomes on its surface and is primarily responsible for:

7. 
In addition to lipid synthesis, the Smooth ER plays a crucial role in detoxifying harmful substances, especially in liver cells. What enzyme is involved in the detoxification process?

8. 
The endoplasmic reticulum is a continuous network of membranes within the cell, and its lumen is separate from the cytoplasm. This separation allows for:

9. 
Which of the following molecules is a key player in protein folding and quality control within the ER?

10. 
The proteins synthesized in the ER undergo various modifications, including glycosylation. This involves the attachment of:

11. 
The ER plays a crucial role in calcium ion (Ca2+) storage and regulation within the cell. Which type of ER is particularly important for this function?

12. 
Which cellular organelle receives proteins and lipids synthesized in the ER, further modifies them, and sorts them for delivery to their final destinations?

13. 
The ER is involved in the synthesis of phospholipids, which are essential components of:

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MCQ on Endoplasmic Reticulum

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