Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

12. Photosynthesis

Light Dependent Reactions

Cell Biology

12. Photosynthesis

Light Dependent Reactions

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Multiple Choice

Where in the chloroplast is NADPH synthesized?

Thylakoid membrane

Grana

Thylaoid lumen

Stroma

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Verified step by step guidance

Understand the structure of the chloroplast, which includes the outer membrane, inner membrane, thylakoid membrane, thylakoid lumen, grana, and stroma.

Recall that the light-dependent reactions of photosynthesis occur in the thylakoid membranes, where light energy is used to split water molecules, releasing oxygen and transferring electrons through the electron transport chain.

Recognize that during the electron transport chain, the energy from electrons is used to pump protons into the thylakoid lumen, creating a proton gradient.

Understand that the enzyme NADP+ reductase, located on the stromal side of the thylakoid membrane, uses electrons from the electron transport chain to reduce NADP+ to NADPH.

Conclude that NADPH is synthesized in the stroma of the chloroplast, where it is used in the Calvin cycle to help convert carbon dioxide into glucose.