🧬 Molecule-Driven · 8 PYQ Papers Analysed

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in Biochemistry

21BTC201J · SRM IST · Semester 3
Biochemistry — Complete Smart Study Hub

5
Units Covered
8
PYQs Analysed
60+
Key Concepts
15
Must-Know Topics
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📚 Notes & Presentations

Unit-wise lecture notes, PPTs & study material synced from Google Drive

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🔥 Units 1 & 3 = 50% of marks.  Cell Signalling pathways and Carbohydrate Metabolism appear in every paper. MAPK/RAS pathway, cAMP second messenger, Glycolysis, TCA cycle, and Protein Turnover are guaranteed mark-scorers. Master these first!
📈 Data-Driven Analysis

PYQ Pareto Analysis

Based on 8 exam papers. Master the 20% of topics that yield 80% of marks.

🔥 HOT
Unit 1
Cell Communication & Signalling
28%
21 / 75 marks
🔥 HOT
Unit 2
Bioenergetics & Photosynthesis
20%
15 / 75 marks
Unit 3
Carbohydrate Metabolism
22%
17 / 75 marks
Unit 4
Protein Turnover & AA Metabolism
17%
13 / 75 marks
Unit 5
Fatty Acid & Nucleic Acid Metabolism
13%
9 / 75 marks

🏆 Top Topics — The Pareto List

Mastering only these topics lets you score 55–65 out of 75

🌡️ Topic Frequency Heatmap

📚 Complete Study Guide

Unit-by-Unit Study Guide

Clear concepts, pathway diagrams, worked examples, and common mistakes for every unit.

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🎯 Exam Strategy

Guaranteed Marks Plan

How to approach each part of the Biochemistry exam for maximum marks.

Part A
25 MCQs × 1 = 25 marks
Target: 20–23 / 25
  • Second messengers — cAMP, IP₃, DAG, Ca²⁺ 8/8
  • MAPK/RAS signalling cascade sequence 8/8
  • Glycolysis — net ATP yield & key enzymes 8/8
  • TCA cycle — net output per turn (NADH, FADH₂, GTP, CO₂) 7/8
  • Ubiquitin-Proteasome pathway for protein degradation 7/8
  • Beta-oxidation of fatty acids — activation & yield 7/8
  • Photosystems I and II — light reactions overview 6/8
  • Transamination vs Deamination (PLP role) 6/8
  • WNT signalling — role of beta-catenin 6/8
  • DNA replication enzymes (Helicase, DNA Pol III, Ligase) 5/8
Part B
5 Questions × 8 = 40 marks
Target: 32–40 / 40
QUnitExpected Topic
21U1RAS/MAPK signalling OR cAMP second messenger pathway 🔥
22U2ETC & Oxidative Phosphorylation — Mitchell's Chemiosmotic Theory 🔥
23U3Glycolysis — all 10 steps with enzymes & ATP tally 🔥
24U4Protein degradation — Ubiquitin-Proteasome system OR amino acid catabolism
25U5Beta-oxidation of palmitic acid with complete ATP calculation
Part C
1 Question × 10 = 10 marks
Target: 8–10 / 10

Choose 1 of 2 questions. Typical options:

Q.26
Complete Glycolysis + TCA Cycle + ETC — integrated energy story with ATP calculation 🔥 OR Cell signalling — RAS/MAPK + WNT pathway comparison
Q.27
Beta-oxidation of palmitic acid (16C) — full calculation with ATP yield 🔥 OR DNA replication — enzymes, mechanism, and Okazaki fragments
💡 Biochemistry Exam Secret: Draw labelled pathway diagrams for full marks. For ATP calculations, always show: NADH × 2.5 + FADH₂ × 1.5 + substrate-level ATP. Label every enzyme in glycolysis — examiners specifically look for enzyme names at each step. A neat table of TCA cycle inputs/outputs scores maximum marks.

🔮 Predicted Next Exam Topics

Based on recent patterns

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❌ Wrong: 0
📊 Total: 0

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