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JudyThe pigment molecule that transfers electrons during the light reaction is chlorophyll. Chlorophyll absorbs light energy and transfers electrons to the reaction center of the photosystem, initiating the flow of electrons through the electron transport chain. This process is essential for the conversion of light energy into chemical energy during photosynthesis.
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What happens when light hits a pigment?
When light hits a pigment, specific wavelengths are absorbed by the pigment molecules. The remaining wavelengths are reflected, giving the pigment its color. The color we perceive is the result of the combination of wavelengths that are reflected back to our eyes.
In a protein complex for the light reaction why is energy transferred from pigment molecule to pigment molecule to a special chlorophyll a molecule and eventually to the primary electron acceptor?
Energy is transferred from pigment molecule to pigment molecule in the protein complex through resonance energy transfer, leading to excitation of a special chlorophyll a molecule called P680. This excitation of P680 causes the release of an electron, which is then transferred to the primary electron acceptor, initiating the electron transport chain in photosynthesis.
Is chlorophyll part of the ATP molecule?
No, chlorophyll is not part of the ATP molecule. Chlorophyll is a pigment responsible for capturing light energy during photosynthesis in plants, while ATP (adenosine triphosphate) is a molecule that stores and transfers energy within cells for various cellular processes.
How does a flavin pigment molecule work with a pH indicator?
Flavin pigment molecule can interact with a pH indicator by changing its color based on the pH of the solution. The flavin pigment undergoes a chemical reaction with the pH indicator, leading to a change in its absorption spectrum or structure, resulting in a color change that can be used to determine the pH of the solution.
What is reduced by electrons in light reactions?
In light reactions of photosynthesis, electrons are reduced by the pigment molecule chlorophyll to produce NADPH and ATP. These reduced molecules carry energy and electrons to the Calvin cycle for the synthesis of carbohydrates.
