Photosynthesis: photosystem I and photosystem II and their bioinorganic aspects - Question Bank
1. Which metal ion is proposed to play a role in stabilizing the structure of chlorophyll antennae complexes?
2. The function of cyclic electron flow is primarily to generate:
3. The primary bioinorganic component that acts as the electron donor to P700 in Photosystem I during cyclic electron flow is:
4. In cyclic electron flow, electrons from ferredoxin are returned to:
5. The 'cyclic electron flow' in photosynthesis primarily involves:
6. The bioinorganic aspect of Photosystem II's function involves the manganese cluster's ability to:
7. Which of the following is a characteristic of the bioinorganic center of Photosystem I's reaction center?
8. The overall function of the photosystems and associated electron transport chain is to convert light energy into chemical energy in the form of:
9. The reduction of P700+ in Photosystem I by plastocyanin occurs in the:
10. Which of the following is a key role of copper ions in photosynthetic electron transport?
11. The bioinorganic cluster in PSII that directly receives electrons from P680 is:
12. Cytochrome f, a component of the cytochrome b6f complex, contains a heme group with which metal ion?
13. The proton gradient generated across the thylakoid membrane by the electron transport chain is used by:
14. The 'dark reactions' (Calvin cycle) are directly dependent on the products of the light-dependent reactions, which are:
15. Which of the following is the terminal electron acceptor in the linear electron flow of photosynthesis?
16. The bioinorganic components of the Fe-S centers in Photosystem I are responsible for:
17. The high redox potential of P680+ in Photosystem II is crucial for:
18. Which metal ion is part of the reaction center chlorophyll (P700) in Photosystem I?
19. The 'water splitting' reaction in PSII produces electrons, protons, and:
20. What is the role of accessory pigments (like chlorophyll b and carotenoids) in the photosystems?
21. The bioinorganic component that bridges the electron transport between the cytochrome b6f complex and Photosystem I is:
22. In Photosystem II, the electron lost by P680 is transferred to pheophytin, and then to:
23. The cytochromes in the cytochrome b6f complex contain heme groups, which are iron-containing porphyrin structures, essential for:
24. The electron flow from Photosystem I directly leads to the reduction of:
25. Which element is crucial for the stability and function of the chlorophyll molecules within the photosystems?
26. The 'plastoquinone pool' in the thylakoid membrane functions to:
27. The bioinorganic cofactor in the reaction center of Photosystem I that is responsible for the initial electron transfer is:
28. Which of the following is a primary electron acceptor in Photosystem II?
29. The primary role of the oxygen-evolving complex (OEC) is to:
30. Which metal ion is essential for the catalytic activity of the NADP+ reductase enzyme, which receives electrons from PSI?
31. The reaction center chlorophyll of Photosystem I is designated as:
32. Which of the following is NOT a component of the electron transport chain linking PSII and PSI?
33. In Photosystem II, the electron lost by P680 is ultimately replaced by an electron from:
34. The bioinorganic component that acts as a mobile electron carrier between PSII and the cytochrome b6f complex is:
35. The 'Z-scheme' of photosynthesis refers to the energy levels of electrons as they move through:
36. The primary function of the light-harvesting complexes (LHCs) associated with PSI and PSII is to:
37. Which molecule directly receives electrons from Photosystem I to reduce NADP+?
38. The bioinorganic center responsible for the oxidation of water in PSII is a tetrameric cluster of:
39. Which complex contains the primary electron donor P700 in Photosystem I?
40. The P680 reaction center chlorophyll in Photosystem II is oxidized by:
41. The role of plastocyanin in the photosynthetic electron transport chain is to:
42. Which of the following is a key bioinorganic component of the electron transfer pathway in Photosystem I?
43. The splitting of water (photolysis) in Photosystem II requires the presence of:
44. What is the typical absorption maximum wavelength for the reaction center chlorophyll of Photosystem I (P700)?
45. The electron transport chain between Photosystem II and Photosystem I involves which of the following carriers?
46. Which pigment molecule is considered the reaction center chlorophyll in Photosystem II?
47. In Photosystem I, the primary electron acceptor is a molecule called:
48. The oxygen-evolving complex (OEC) in Photosystem II is primarily associated with which metal ion?
49. What is the primary role of Photosystem II (PSII) in photosynthesis?
50. Which metal ion is the central atom in the reaction center of Photosystem I (PSI)?