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Questions and Answers
What is the primary function of the light reactions in photosynthesis?
What is the primary function of the light reactions in photosynthesis?
- Break down glucose
- Produce water
- Generate ATP and NADPH (correct)
- Release carbon dioxide
Where do the light reactions of photosynthesis take place?
Where do the light reactions of photosynthesis take place?
- Nucleus of chloroplasts
- Thylakoid membranes of chloroplasts (correct)
- Cell wall of chloroplasts
- Stroma of chloroplasts
What is the byproduct released during the light reactions of photosynthesis?
What is the byproduct released during the light reactions of photosynthesis?
- Carbon dioxide
- Glucose
- Oxygen (correct)
- Water
What is the role of the primary electron acceptor in photosynthesis?
What is the role of the primary electron acceptor in photosynthesis?
What captures and transfers solar energy to the main pigment in photosynthesis?
What captures and transfers solar energy to the main pigment in photosynthesis?
What is the role of the primary electron acceptor in photosynthesis?
What is the role of the primary electron acceptor in photosynthesis?
Where do the light reactions of photosynthesis primarily occur?
Where do the light reactions of photosynthesis primarily occur?
What is the function of the photosystem in the light reactions of photosynthesis?
What is the function of the photosystem in the light reactions of photosynthesis?
What is the main byproduct released during the light reactions of photosynthesis?
What is the main byproduct released during the light reactions of photosynthesis?
What is the primary function of the light reactions in photosynthesis?
What is the primary function of the light reactions in photosynthesis?
Flashcards
Light Reactions Function
Light Reactions Function
To produce ATP and NADPH for the Calvin cycle.
Location of Light Reactions
Location of Light Reactions
In the thylakoid membranes within the chloroplasts.
Light Reactions Byproduct
Light Reactions Byproduct
Oxygen (O2) is released into the atmosphere.
Primary Electron Acceptor Role
Primary Electron Acceptor Role
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Solar Energy Capture
Solar Energy Capture
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Electron Acceptor's Role
Electron Acceptor's Role
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Light Reactions Location
Light Reactions Location
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Photosystem Function
Photosystem Function
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Released Byproduct
Released Byproduct
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Main Function
Main Function
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Study Notes
Light Reactions of Photosynthesis
- The light reactions of photosynthesis capture light energy and convert it into chemical energy in the form of ATP and NADPH. These are the primary products of the light reactions, which then feed into the Calvin cycle.
- The light reactions take place within the thylakoid membranes of chloroplasts.
- Oxygen is released as a byproduct of the light reactions.
- The primary electron acceptor receives an excited electron from chlorophyll and passes this electron to an electron transport chain.
- Antenna pigments, such as chlorophyll b and carotenoids, capture light energy and transfer it to the main pigment, chlorophyll a.
- The primary electron acceptor molecule accepts an excited electron from chlorophyll, initiating the electron transport chain that drives ATP production.
- The thylakoid membrane is where the light reactions occur.
- Photosystems are complexes of proteins and pigments that capture light energy and use it to excite electrons.
- Oxygen gas (O2) is the main byproduct of the light reactions.
- The light reactions convert light energy into chemical energy in the form of ATP and NADPH.
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