How is energy captured from photons of light stored and transferred to the stroma for use in the Calvin cycle? Group of answer choices In the form of chemical bonds/high energy electrons in ATP and NADPH In the form of carbon bonds in CO2 in the form of a chemical gradient of hydrogen ions in the form of carbon bonds in glucose
Added by Vicenta K.
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This absorption initiates a series of reactions known as the light-dependent reactions. Show more…
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In the light reactions, electrons boosted from photosystem II pass along the electron transport chain and are used to create a proton gradient, which is needed to produce NADPH by chemiosmotic phosphorylation. ADP Starch Electrons boosted from photosystem II are used to reduce NADP+, which carries the electrons to the Calvin cycle. Carbon dioxide Glucose In the first step of the Calvin cycle, the enzyme rubisco, which is present in all plants, adds CO2 to a five-carbon sugar. Lactase Rubisco Then, using the energy and electrons from the light reactions, the three-carbon molecule formed from PGA. Oxygen Proton Two phosphoglyceraldehyde molecules are combined to form one molecule of PGAL, which plants use to synthesize polysaccharides such as starch. NADP PGAL ATP
Supreeta N.
Stage 1: Light energy is absorbed and stored in temporary chemical bonds. Low-energy electrons are removed from and boosted to high energy levels. The energized electrons flow through an electron transport chain. Stage 2: The stored energy in bonds is used to make organic molecules. High-energy electrons from are transferred to CO2. Overall, electrons flow from to CO2. Because electron carriers exist in very small amounts, NADPH must be oxidized to NADP+ in order for the light- reactions to continue to occur.
Dominador T.
In the photosynthetic electron transfer chain, ATP and NADPH are produced into the stroma of the chloroplast. This is necessary mainly because: the photorespiration occurs in the stroma. glucose is made in the stroma, which requires ATP the Calvin cycle runs in the stroma, which uses ATP and NADPH as energy source. the stroma is rich in water
Babar A.
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