IGNOU MBC 1 SOLVED ASSIGNMENT

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MBC 1 2025 - English

ASSIGNMENT

CONCEPTS OF BIOCHEMISTRY

Course Code: MBC-001

Assignment Code: MBC-001/TMA/2025

Maximum Marks: 100

Answer all the questions given below.

1. Define Biochemistry and explain its interdisciplinary nature. Refer to the interactions between biochemistry and allied branches like chemistry, biology, and physics.

2. Explain the structural features and unique properties of water that make it a universal solvent. Include details about hydrogen bonding and its impact on water's properties.

3. Explain the structural organization of amino acids and their classification based on the R group.

4. What are the primary, secondary, tertiary, and quaternary structures of proteins? Provide examples and explain their significance in protein functionality.

5. Write a detailed note on biologically important sugar derivatives with suitable examples and draw their structures.

6. Discuss the role of lipids in biological membranes and their importance in maintaining cellular integrity.

7. Outline the process of protein purification, including common techniques used. Discuss methods like chromatography and electrophoresis.

8. Explain the role of post-translational modifications in proteins. Provide examples of modifications like phosphorylation and glycosylation.

9. Discuss the role of vitamins as coenzymes in metabolic reactions. Choose three vitamins and describe their biochemical roles and deficiency symptoms.

10. What is the significance of peptides like vasopressin, oxytocin, and glutathione in biological systems? Discuss their functions and importance.

Note: Draw the figures/flowcharts/tables wherever required.

MBC 001 (January 2026 - July 2026) - ENGLISH

ASSIGNMENT

CONCEPTS OF BIOCHEMISTRY

Course Code: MBC-001
Assignment Code: MBC-001/TMA/2026
Maximum Marks: 100

Answer all the questions given below. All Questions carry equal marks.

1. A) Define the term biochemistry and explain why it is considered as an interdisciplinary discipline.

B) Explain how knowledge of biochemistry helps in understanding metabolic disorders such as diabetes or thalassemia. 

2. A) Classify carbohydrates based on their structure with suitable examples. 

B) Describe the role of monosaccharides and polysaccharides in energy metabolism in living cells. 

3. A) Explain the structural differences between starch, glycogen, and cellulose. 

B) Discuss why cellulose cannot be digested by humans but can be utilized by ruminants. 

4. A) What are glycoproteins and glycolipids? Mention their biological significance. 

B) Explain the role of cell surface carbohydrates in cell–cell recognition and immune response. 

5. A) Classify lipids and describe their major biological functions. 

B) Explain how abnormal lipid metabolism leads to obesity and cardiovascular diseases. 

6. A) Differentiate between saturated and unsaturated fatty acids. 

B) Discuss the importance of polyunsaturated fatty acids in maintaining membrane fluidity. 

7. A) Describe the levels of protein structure with suitable examples. 

B) Explain how membrane lipid composition affects membrane permeability and function. 

8. A) List the major biological functions of proteins with examples. 

B) Explain how amino acid substitutions can affect protein structure and function. 

9. A) Describe the principles of any two protein purification techniques. 

B) Describe the structure of DNA and RNA highlighting their differences. 

10. A) Explain the principle of DNA sequencing techniques. 

B) Explain the biochemical basis of deficiency disorders caused by lack of fat-soluble or water-soluble vitamins. 

Note: Draw the figures/flowcharts/tables wherever required.

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