d) In the presence of sunlight, an electrochemical gradient isgenerated between two of the spaces within the chloroplast.1.Describe what happens when a photon of light energy hits amolecule of chlorophyl.2. What is meant by the term electrochemical gradient?3.What role does the photosynthetic electron transport chain playin the generation of the electrochemical gradient?4. Two chemical reactions also contribute to the generation of theelectrochemical gradient. What are the reactions, where do theyoccur, and why do these factors affect the gradient?5. The electrochemical gradient can be utilised by ATP synthaseto generate ATP - explain how the location and structure of ATPsynthase enable it to perform this function.e) The light reactions of photosynthesis generate ATP andNADPH for use in the dark reactions (i.e., the Calvin cycle).Why are they needed?

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1.Describe what happens when a photon of light energy hits a molecule of chlorophyl. 2. What is meant by the term electrochemical gradient? 3. What role does the photosynthetic electron transport chain play in the generation of the electrochemical gradient?

1.Describe what happens when a photon of light energy hits a molecule of chlorophyl. 2. What is meant by the term electrochemical gradient? 3. What role does the photosynthetic electron transport chain play in the generation of the electrochemical gradient?

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter8: Photosynthesis

Section: Chapter Questions

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Concept explainers

Photosynthesis

Plants have a capacity that we humans can only imagine— the ability to produce food from sunlight. Sure, we can prepare some dishes that we can savor on, but it become possible because of the plants (as they serve as a producers of all the raw materials required). Photosynthesis is the method of assembling carbohydrates with the aid of sunlight.

Question

d) In the presence of sunlight, an electrochemical gradient is
generated between two of the spaces within the chloroplast.
1.Describe what happens when a photon of light energy hits a
molecule of chlorophyl.
2. What is meant by the term electrochemical gradient?
3.What role does the photosynthetic electron transport chain play
in the generation of the electrochemical gradient?
4. Two chemical reactions also contribute to the generation of the
electrochemical gradient. What are the reactions, where do they
occur, and why do these factors affect the gradient?
5. The electrochemical gradient can be utilised by ATP synthase
to generate ATP - explain how the location and structure of ATP
synthase enable it to perform this function.
e) The light reactions of photosynthesis generate ATP and
NADPH for use in the dark reactions (i.e., the Calvin cycle).
Why are they needed?

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