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Questions and Answers
In which part of the chloroplast do the light-dependent reactions take place?
In which part of the chloroplast do the light-dependent reactions take place?
What is the primary function of the light-dependent reactions in photosynthesis?
What is the primary function of the light-dependent reactions in photosynthesis?
What is the net result of the energy conversion process in photosynthesis?
What is the net result of the energy conversion process in photosynthesis?
What is the energy source for the light-independent reactions (Calvin Cycle)?
What is the energy source for the light-independent reactions (Calvin Cycle)?
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What is the role of RuBisCO in the light-independent reactions (Calvin Cycle)?
What is the role of RuBisCO in the light-independent reactions (Calvin Cycle)?
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Study Notes
Energy Conversion in Photosynthesis
Light-Dependent Reactions
- Occur in the thylakoid membranes of chloroplasts
- Light energy from the sun is absorbed by pigments (chlorophyll and others)
- Energy is used to generate ATP and NADPH
- Two stages:
- Light absorption and electron transfer
- ATP synthesis and reduction of NADP+
Light-Independent Reactions (Calvin Cycle)
- Occur in the stroma of chloroplasts
- Use energy from ATP and NADPH produced in light-dependent reactions
- Fix CO2 into organic molecules (glucose) using the enzyme RuBisCO
- Regenerate RuBP (ribulose-1,5-bisphosphate) to continue the cycle
Energy Conversion Summary
- Light energy is converted into chemical energy (ATP and NADPH) in light-dependent reactions
- Chemical energy is used to convert CO2 into glucose in light-independent reactions
- Net result: light energy is converted into chemical energy stored in glucose
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Description
Learn about the energy conversion process in photosynthesis, including light-dependent and light-independent reactions, and how light energy is converted into chemical energy stored in glucose.