Biology, 06.06.2020 22:02 michaelmonroe9105

Which of the following statements best explains how the energy in a photon of light is stored in a molecule of the sugar G3P?

a)Light energy directly provides energy to RuBP and CO2, which produce G3P in the Calvin cycle.

b) Light energy directly provides energy to ATP synthase, which produces ATP during the light reactions.

c)Light energy energizes electrons to make ATP and NADPH, which provide energy to produce G3P in the Calvin cycle

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Answer from: Olaf2018

The statement best explains how the energy in a photon is stored in G3P is that light energy energizes electrons to make ATP and NADPH, which provide energy to produce G3P in the Calvin cycle (Option c).

During photosynthesis, sunlight excites electrons from chlorophyll in a process that triggers the synthesis of ATP and NADPH.The Calvin cycle is a metabolic pathway by which plants convert carbon dioxide (CO2) from the air into glucose molecules during photosynthesis.Glyceraldehyde 3-phosphate (G3P) is the prime end-product of the Calvin cycle. A G3P molecule has three carbon (C) atoms, thereby two molecules of G3P are required to produce a six-carbon sugar (glucose) molecule.

In conclusion, the statement best explains how the energy in a photon is stored in G3P is that light energy energizes electrons to make ATP and NADPH, which provide energy to produce G3P in the Calvin cycle (Option c).

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Answer from: eme05

c) Light energy energizes electrons to make ATP and NADPH, which provide energy to produce G3P in the Calvin cycle

Explanation:

Photosynthesis is a metabolic process carried out by the cells of autotrophic organisms. The process involves synthesis of food (glucose) using light energy. Photosynthesis involves two processes viz: light-dependent stage and light-independent stage.

The light dependent stage of photosynthesis occurs in the thylakoid membrane of the CHLOROPLAST, where Chlorophyll pigments capture photons of light from the sun. The Chlorophyll becomes activated and provides energy to build a proton pump, which eventually powers the synthesis of ATP and NADPH molecules.

The ATP and NADPH molecules enter into the stroma of the CHLOROPLAST, where the light-independent or Calvin cycle takes place. In the Calvin cycle, ATP provides energy while NADPH supplies electrons that produce Glyceraldehyde-3-phosphate (G3P) molecules.

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