BBCCT-109 EM 2026 SOLVED ASSIGNMENT

Description

ASSIGNMENT

Metabolism of carbohydrates and lipids Core Course in Biochemistry

Course Code: BBCCT-109

Assignment code: BBCCT-109/TMA/2026

Maximum marks: 100

Note: Attempt all questions. The marks for each question are indicated against it. Write the answers in your own words; do not copy from the course material.

PART- (A) Marks: 50

1.(a) Write five features of metabolism design. (5)

(b) Discuss the feeder pathway of galactose metabolism.

2.(a) Name two coenzymes derived from the vitamin niacin. Write one reaction indicating their role. (2+3)

(b) Explain Cori cycle and its significance. (5)

3.(a) Draw TCA cycle and write the equation showing net outcome of this cycle. Also calculate how many ATPs are produced by aerobic oxidation of one glucose molecule? (2+1+2= 5)

(b) What is gluconeogenesis? Name five gluconeogenic substrates and explain the significance of this pathway. (1+2+2= 5)

4.(a) Which factors govern the reciprocal regulation of glycolysis and gluconeogenesis and why is it important? (5)

(b) Demonstrate the role of hormones in regulation of glycogen metabolism. (5)

5. (a) Explain Kranz anatomy. How do such plants fix carbon? (5)

(b) How are starch and sucrose synthesized in plants? (5)

PART- (B) Marks: 50

6.(a) .Explain the steps of fatty acid oxidation and transport before these are oxidized. (5)

(b) Discuss the energetics of fatty acid oxidation, taking palmitic acid as an example. (5)

7(a) State the differences between mitochondrial and peroxisomal β oxidation pathways of fatty acids. (5)

(b) Write the activities of fatty acid synthase I complex. (5)

8.(a) Name the key regulatory enzyme of de novo cholesterol biosynthesis. How does it exert the regulation? (5)

(b) Calculate the energy cost of synthesis of palmitic acid. (5)

9.(a) Explain the synthesis of triacylglycerols by DAG transcyclase pathway. (5)

(b) Explain CDP base pathway and its significance. (5)

10.(a) Discuss five stages of glucose homeostasis. (5)

(b) Explain the role of any two hormone signals which regulate fat metabolism.*