Summary
Photosynthesis is the process by which plants convert light energy into chemical energy, producing carbohydrates from carbon dioxide and water. It involves light-dependent reactions in the thylakoids and light-independent reactions in the stroma, known as the Calvin cycle.
Exam Tips
Key Definitions to Remember
- Photosynthesis — The process by which plants manufacture carbohydrates from raw materials using energy from light.
- Chlorophyll — A pigment in chloroplasts that traps light energy and converts it into chemical energy.
- Photophosphorylation — The process of converting ADP and Pi into ATP using light energy during photosynthesis.
Common Confusions
- Confusing cyclic and non-cyclic photophosphorylation.
- Misunderstanding the role of chlorophyll in photosynthesis.
Typical Exam Questions
- What is the role of chlorophyll in photosynthesis? Chlorophyll traps light energy and converts it into chemical energy.
- How does the Calvin cycle contribute to photosynthesis? It uses ATP and reduced NADP to produce complex organic molecules.
- What is the difference between cyclic and non-cyclic photophosphorylation? Cyclic involves only photosystem I, while non-cyclic involves both photosystem I and II.
What Examiners Usually Test
- Understanding of the stages of photosynthesis.
- The role of chloroplasts and their structure in photosynthesis.
- Differences between light-dependent and light-independent reactions.