Curriculum
Science — Second Preparatory
Unit 1: Matter and Energy
0/8
Unit 2: Matter and Chemical Reactions
0/6
Unit 3: Energy Flow in Photosynthesis and Respiration
0/4
Unit 4: Geological Processes
0/4
Text lesson
Cellular Respiration
Cellular Respiration
Anaerobic respiration
Anaerobic respiration
- Anaerobic respiration takes place in the absence of oxygen. It releases much less energy than aerobic respiration. Examples are:
| Comparison aspect | Main idea | Keywords |
|---|---|---|
| In yeast | glucose is converted into ethanol and carbon dioxide: C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ + energy. This is what happens when dough ferments and rises in bread-making | glucoseconvertedethanolcarbon |
| In muscles during hard exercise | glucose is converted into lactic acid when oxygen is not enough. This causes tiredness and pain in the muscles | glucoseconvertedlacticacid |
Cellular Respiration · 3 / 7