BCHET-149 Molecules Of Life solved assignment is prepared for IGNOU students who want clear concepts, correct explanations, and confidence before submission. This assignment covers biomolecules, carbohydrates, lipids, nucleic acids, enzymes, metabolism, genetics, and biochemical energetics in a simple and student-friendly way. Answers are written as per IGNOU expectations so BACHELOR OF SCIENCE (GENERAL) (BSCG) and BSCM students can understand easily and avoid mistakes during evaluation.

BCHET 149 Assignment Instructions

PLEASE FOLLOW THE ABOVE FORMAT STRICTLY TO FACILITATE EVALUATION AND TO AVOID DELAY.
Use only foolscap size writing paper for writing your answers.
Leave 4 cm margin on the left, top and bottom of your answer sheet.
Your answers should be precise.
Solve Part-A and Part-B of this assignment and submit within the due date.
Assignments received after the due date shall not be accepted.
You cannot fill the examination form until you submit this assignment.

BCHET 149 Assignment Questions

PART-A

1. a) What are the various constituents of cell membrane? Describe the modes by which cell membrane controls the transport of ingoing and outgoing molecules. (5)
b) Describe the classification of carbohydrates giving examples for each class. (5)

2. a) Explain the significance of carbohydrates as blood group substances. (5)
b) Describe the physical and chemical ways of detecting unsaturation in fatty acids. How does unsaturation affect the melting points of fatty acids? (5)

3. a) What are prostaglandins? Explain their physiological roles in human beings. (5)
b) Giving the structures differentiate between a nucleotide and a nucleoside. (5)

4. a) Describe and compare the various forms of DNA and explain the bonds that hold the double helix together. (5)
b) Describe the conversion of G-3-P into pyruvate during the glycolytic process. (5)

5. Write short notes on the following: (10)
a) Convention in biochemical energetics
b) Mechanism of muscle contraction
c) Regulation of glycogen metabolism

PART-B

6. a) Describe the phenomenon of substrate channeling observed in the conversion of pyruvate into acetyl Co-A. (5)
b) Taking the example of palmitic acid oxidation, explain the energetics of fatty acid metabolism. (5)

7. a) Name and describe the processes involved in drug action. (5)
b) Describe the role of enzymes in health sciences. (5)

8. a) Describe the process of DNA replication and illustrate your answer. (5)
b) What is genetic code? Enlist the characteristics of a genetic code. (5)

9. a) What is meant by operon? Describe the expression process of Lac-operon of E. coli. (5)
b) What is meant by drug-receptor complex? Explain the drug-receptor theory of biological activity of a drug. (5)

10. a) Describe the steps involved in the energetics of degradation of fatty acids. (5)
b) Name the methods of determination of amino acid sequence in a protein and describe any one method. (5)

BCHET 149 Assignment Details

Course Code: BCHET-149
Subject Name: Molecules Of Life
Programme: BSCG, BSCM
University: IGNOU
Format: PDF

BCHET 149 Assignment Submission End Date (Upto)

For students enrolled in July 2025: 30th April 2026 – Coordinator of the learner support center
For students enrolled in January 2026: 30th September 2026 – Coordinator of the learner support center

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FAQs

Is BCHET 149 difficult?

BCHET 149 can feel lengthy, but with clear explanations and structured answers, most students find it manageable and scoring.

Is this assignment as per IGNOU guidelines?

Yes, it strictly follows IGNOU format, syllabus, and evaluation expectations.

Can I submit this assignment directly?

This solved assignment is for reference. Students should rewrite answers in their own handwriting.

Is it useful for BSCG and BSCM students?

Yes, it is prepared specifically for BSCG and BSCM learners.

Will this help me score better?

Yes, answers are written in an examiner-friendly manner to improve scoring chances.

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