Which process is directly driven by light energy? 1) Creation of a pH gradient by pumping protons...
Question:
Which process is directly driven by light energy?
1) Creation of a pH gradient by pumping protons across the thylakoid membrane
2) Carbon fixation in the stroma
3) Reduction of NADP+ molecules
4) Removal of electrons from chlorophyll molecules
5) ATP synthesis
The Light-Dependent Reaction:
Photosynthesis is composed of two consecutive phases: light-dependent reactions followed by the light-independent reactions. The light-dependent reaction, as the name implies, relies on solar energy to initiate the reactions that lead to ATP synthesis and reduction of NADP+ into NADPH. These products of the light-dependent reaction are vital for the light-independent reaction. Since the light-dependent reaction makes use of the photosynthetic pigment chlorophyll, it takes place in the thylakoid space of the chloroplast whereas the light-independent reaction takes place in the stroma.
Answer and Explanation: 1
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The correct answer is option 4.
Light energy is vital in photosynthesis. Without light, plants cannot possibly initiate the process that...
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Photolysis and the Light Reactions: Definitions, Steps, Reactants & Products
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Chapter 8 / Lesson 8
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Explore the light reaction of photosynthesis. Learn about the location, reactants, and products of light dependent reactions and photolysis in the lesson below.
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