Understand the exact mechanism of denaturation caused by extreme pH levels or high temperatures. Sketch and explain the resulting rate-of-reaction graphs. Human Nutrition and Transport Systems
| Feature | Aerobic Respiration | Anaerobic Respiration | |---------|---------------------|----------------------| | Oxygen required | Yes | No | | Products | Carbon dioxide + Water | Lactic acid (animals) or Ethanol + CO₂ (plants/yeast) | | Energy yield | High (approx 36–38 ATP) | Low (2 ATP) | | Location | Mitochondria and cytoplasm | Cytoplasm only |
Remember: In the O Level Biology 5090 exam, you are not being tested on how much you read. You are being tested on how much you can retrieve under time pressure. Better notes are retrieval-ready notes. biology o level 5090 notes better
Biology 5090 is full of processes and structures that are easily confused. Use tables in your notes to highlight differences. For example:
Most students confuse aerobic and anaerobic. Your better notes should include: Understand the exact mechanism of denaturation caused by
Biology 5090 includes quantitative questions. Your notes should have a dedicated section for formulas.
Tutopiya provides fantastic free tools like the 2026 Revision Checklist , which mirrors the official syllabus perfectly and is an excellent way to track your progress. They also offer a very useful Formula Sheet that compiles all key calculations for magnification, respiration, genetics, and more in one place. You are being tested on how much you
For Paper 1, the highest-value drill is timed multiple-choice practice: 40 questions in 60 minutes, marked to the official scheme. The mark scheme typically expects 4–6 distinct points in a logical order. Know this structure inside and out.