IB Biology SL C1.3.1 Light Energy Chemical Energy Questions
Practise IB Biology SL 8.3.1 by explaining how chlorophyll captures light and how leaf cells convert it into chemical energy.
- Syllabus
- First assessment 2025
- Course
- Biology SL
- Level
- SL
Exam points
- Analyse pigment and chloroplast evidence to explain capture and conversion of light energy.
- Explain how absorbed light energy excites electrons and is transferred into photosynthetic reactions.
- Relate chloroplast structure, light absorption and photosynthesis to production of energy-rich organic compounds in leaves.
IB Biology SL C1.3.1 Light Energy Chemical Energy Questions question 1
[Maximum number: 5]
Describe how leaf cells make use of light energy.
| a | leaf cells contain chloroplasts; |
| b | light is absorbed by chlorophyll (in chloroplasts); |
| c | other pigments absorb different wavelengths; |
| d | light energy is used in photosynthesis; |
| e | (light is needed) to combine water and carbon dioxide/fix carbon dioxide; |
| f | carbon compounds/organic compounds/glucose/starch/carbohydrate are produced; |
| g | blue and red light is absorbed; |
| h | perform photolysis OR split water molecules; |
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