PHOTOSYNTHESIS
LIGHT DEPENDENT REACTIONS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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NADP+ is produced
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ATP is consumed to yield ADP
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carbon dioxide is fixed in organic molecules
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light is absorbed and funneled to reaction-center chlorophyll a
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Detailed explanation-1: -Light is absorbed by various pigments and funnelled to the chlorophyll molecule at the reaction center. This leads to the flow of electrons through the ETC, splitting of water and the formation of ATP and NADPH.
Detailed explanation-2: -The light reactions capture energy from sunlight, which they change to chemical energy that is stored in molecules of NADPH and ATP. The light reactions also release oxygen gas as a waste product.
Detailed explanation-3: -This illustration shows that ATP and NADPH produced in the light reactions are used in the Calvin cycle to make sugar.
Detailed explanation-4: -Light dependent reaction involves four important stages – absorption of light energy, splitting of water molecules, release of oxygen, formation of energy carrying molecules – ATP and NADPH.
Detailed explanation-5: -Photolysis of water to protons, electrons and O2 takes place during the light phase. Light energy is used in the formation of ATP and NADPH during light reaction.