NOEL DILSHAN

🚀 AS BIOLOGY 9700 — CHAPTER 1: CELL STRUCTURE

Build your understanding of cells from the ground up. 🧬🔬 This complete lesson covers microscopy, cell organelles, bacteria, viruses and the key differences between cell types — all in one structured resource.

📚 WHAT WE COVER

🔬 1.1 • Microscopy & Eyepiece Graticules
Magnification, measurements, image interpretation, scale and eyepiece graticule calculations.

🧬 1.2 • Animal Cell Organelles
Explore the structure and function of the nucleus, mitochondria, ribosomes, ER, Golgi apparatus, lysosomes, centrioles and more.

🌱 1.3 • Plant Cell Organelles
Understand specialised structures including the cell wall, chloroplasts, large permanent vacuole and tonoplast.

🦠 1.4 • Bacteria
Study prokaryotic cell structure, including circular DNA, plasmids, 70S ribosomes, capsule, cell wall and cell surface membrane.

🧫 1.5 • Viruses
Explore viral structure, genetic material, protein coats and why viruses differ fundamentally from cellular organisms.

⚖️ 1.6 • Comparing Cell Types
Compare animal, plant and bacterial cells, while understanding how cell structure relates to function.

🎯 EXAM SKILLS YOU’LL BUILD

🔍 Identify structures from diagrams and microscope images
🧠 Link structure to function
📏 Apply magnification and measurement calculations
⚖️ Compare cell types accurately

🔬 PRACTICAL SKILLS

Develop confidence with microscopy, scale, measurements, image interpretation and scientific calculations.