Biology: High-Yield Topics You Must Master

Not all chapters are created equal. Based on the 2024 and 2023 papers, here is the hierarchy of importance.

Tier 1: The 'Golden' Chapters

These chapters combine to form almost 40% of the Biology section.

• Bioenergetics: Photosynthesis (Light/Dark reactions) and Respiration (Glycolysis/Kreb's).
• Biological Molecules: Proteins, Lipids, Carbohydrates breakdown.
• Coordination & Control: Nerves + Hormones.

Tier 2: The 'Silver' Chapters

• Review of Kingdom Animalia (General characteristics).
• Reproduction
• Cell Structure

How to Study Them

For Tier 1 chapters, read the textbook lines word-for-word. PMDC often picks lines directly from Punjab/Federal text books for these topics.