PLEASE MATCH YOUR ASSIGNMENT QUESTIONS ACCORDING TO YOUR SESSION

IGNOU MZO-01 (January 2025 – December 2025) Assignment Questions

1. a) Write a brief note on the origins of the chloroplast and mitochondria.

b) Describe the biological significance of the cytoskeleton.

2. a) Briefly discuss the structure of intermediate filaments.

b) How is the MAPK pathway activated? Explain.

3. Write difference between following pairs:

i) Centrosomes and Centrioles

ii) Intrinsic and extrinsic apoptotic pathways

iii) Cilia and flagella

iv) Actin and myosin

4. Write a short note on the following:

i) Plasma membrane

ii) Necrosis

iii) Cryopreservation of cell line

iv) Facilitated Diffusion

5. a) Briefly discuss the process of transduction in the cell signaling.

b) Discuss the different types of cell junctions.

6. a) Describe the role of ubiquitin in protein turnover

b) Discuss different phases of Interphase with suitable diagram.

7. a) Enlist the culture media used in the cell culture.

b) Explain what are the checkpoints and its regulation?

8. a) Define active transport? Discuss with suitable examples.

b) Explain the vesicular transportation mechanism in details.

9. a) Describe the role of G-protein coupled receptors (GPCRs) in signal transduction of cells.

b) What are the main glands found in the brain and how do they function.

10. a) Define Cyclin-CDK kinases. Write a brief note about the interaction between cyclin and CDKs.

b) Explain how cellular pH maintained and regulated

IGNOU MZO-01 (January 2024 – December 2024) Assignment Questions

1. a) How do the origins of the chloroplast and mitochondria occur?
b) How do sclerenchyma and collenchyma differ in terms of their structure and function?

2. a) How do numerous drugs influence actin polymerization?
b) Write the various events of muscle contraction in the proper order from beginning to end.

3. a) Describe the structure and processes of assembly and disassembly microtubules.
b) Describe in detail the diseases arising from mutations in intermediate filament genes.

4. a) Explain the structure of the plasma membrane known as the fluid mosaic.
b) Discuss active transport with a relevant diagram.

5. Discuss which organelles are responsible for sorting, packaging, processing, and modifying proteins?

6. a) Enumerate the major classes of neurotransmitter.
b) What are the receptors for signal transduction?

7. a) Give a comprehensive explanation on the facilitated diffusion process.
b) How does the p53 tumour suppressor gene regulate the cell cycle?

8. a) How BCl-2 and MCL-1 inhibitors help in cancer treatment?
b) Differentiate between intrinsic and extrinsic apoptotic pathways.

9. a) What are the distinguishing features of the centriole?
b) List the common features of the signaling system.

10. What is a cell cycle? Discuss different phases and regulatory mechanisms involved in the cell cycle.

MZO-01 Assignments Details

University	:	IGNOU (Indira Gandhi National Open University)
Title	:	Molecular Cell Biology
Language(s)	:	English
Code	:	MZO-01
Degree	:	MSCZOO
Subject	:	Zoology
Course	:	Core Courses (CC)
Author	:	Gullybaba.com Panel
Publisher	:	Gullybaba Publishing House Pvt. Ltd.