BBCCT-109 IGNOU Solved Assignment 2026-27

BBCCT-109 Solved Assignment: Metabolism of Carbohydrates and Lipids (TMA)

This verified digital PDF assignment addresses the core components of BBCCT-109, structured to fulfill the mandatory 30% course weightage for Bachelor of Science (Honours) in Biochemistry (BSCBCH). Solutions are 100% plagiarism-free, referencing peer-reviewed biochemical literature and IGNOU’s official curriculum for the current academic session.

Key Syllabus Units Covered

• Block-1: Carbohydrate Metabolism I
  • Glycolysis pathway: Enzymatic steps, regulation by ATP/AMP ratios, and the role of PFK-1 and pyruvate kinase.
  • Glucose-6-phosphate dehydrogenase (G6PD) deficiency: Biochemical implications and connection to oxidative stress.
• Block-2: Carbohydrate Metabolism II
  • Gluconeogenesis: Key enzymes (PEPCK, fructose-1,6-bisphosphatase) and its regulation via hormonal signals (glucagon, insulin).
  • Pentose phosphate pathway: NADPH generation and its role in biosynthetic reactions (e.g., fatty acid synthesis).
• Block-3: Lipid Metabolism I
  • Fatty acid oxidation: β-oxidation pathway, mitochondrial transport via carnitine shuttle, and genetic disorders (e.g., MCAD deficiency).
  • Lipoprotein structure: Chylomicrons, VLDL, LDL, and HDL—apolipoprotein roles and metabolic fates.
• Block-4: Lipid Metabolism II
  • Fatty acid synthesis: Acetyl-CoA carboxylase regulation, malonyl-CoA formation, and the role of citrate in anaplerotic pathways.
  • Triacylglycerol metabolism: Storage and mobilization in adipose tissue, hormone-sensitive lipase activity, and ketogenesis.

Assignment Structure and Verification

The solved assignment adheres to IGNOU’s word limits (500 words for long-answer questions, 250 words for short-answer, and 100 words for numerical problems) and includes:

• Step-by-step biochemical pathways with enzyme-specific annotations.
• Graphical representations of regulatory feedback loops (e.g., insulin/glucagon on glycogen metabolism).
• Cross-referenced solutions to Block-1 to Block-4 questions, including:
• Descriptive answers on glycolytic intermediates and their metabolic fates.
• Calculations for ATP yield per glucose molecule in aerobic vs. anaerobic conditions.
• Comparative analysis of saturated vs. unsaturated fatty acid metabolism.

FAQs for BBCCT-109 TMA

Solutions are provided in English-only with Hindi translations of key terms (e.g., ‘’, ‘β-’) embedded in parentheses for clarity. Biochemical pathways are labeled bilingually where applicable.

Yes. Numerical answers include detailed stoichiometric breakdowns, e.g., ATP yield from one molecule of palmitate via β-oxidation, with explicit mention of NADH/FADH₂ equivalents and mitochondrial electron transport chain efficiency.