In oxygenic photosynthesis, water is split in order to provide the

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Question:
In oxygenic photosynthesis, water is split in order to provide the

1. electrons needed to reduce P680

2.O2 needed for the dark reactions

3. electrons needed to reduce NADH

4.electrons needed for cyclic photophosphorylation

Posted Date:-2021-03-07 10:59:30

More MCQS Questions and answers

  1. Carbon dioxide is reduced in
  2. In algae, photosynthesis takes place in
  3. The cytochrome c oxidase complex
  4. The end products of noncyclic photophosphorylation are
  5. What is the maximum absorption wavelength for photosystem I in green plants?
  6. Which of the following enzyme does not take part in the TCA cycle?
  7. Which of the following statements about energy metabolism is false?
  8. As a result of the photosynthetic process, which product is formed?
  9. If the oxygen is labeled in CO2 and provide this CO2 to a plant, where it is expected to find this labeled oxygen after the plant had undergone photosynthesis?
  10. In noncyclic photophosphorylation, the ultimate acceptor of electrons that have been produced from the splitting of water is
  11. In the initial step of photosynthesis, sunlight energizes the electron pair of
  12. What do NAD+, NADP+, and FAD+ all have in common?
  13. A cyclic electron transport process is the characteristic of
  14. A eukaryotic cell that can carry out only fermentation instead of the complete aerobic respiration of glucose
  15. A glucogenic amino acid is one which is degraded to
  16. A person with phenylketonuria cannot convert
  17. A positive redox potential means substance has
  18. Antenna complexes, electron transport chains, and carbon fixation are all found in
  19. Assume the combined processes of photosynthesis and cellular respiration, the electrons that start as part of H2O at the beginning of the light reactions end up attaching to
  20. Carbon fixation requires the expenditure of ATP molecules which is generated by
  21. Cholesterol can be synthesized de novo in
  22. Citric acid cycle occurs in
  23. During the light-dependent reactions of photosynthesis, which of the following does not occur?
  24. Electron transport systems play a vital role in
  25. Energy that is released from glucose during respiration but not transferred to ATP bonds can be detected as
  26. Glycolysis takes places in the __________ and produces __________ , which in the presence of oxygen then enters the __________ .
  27. Histidine is degraded to α-ketoglutarate and is described as a
  28. Hydrogen (electron) acceptor in the light reactions is
  29. In cells having organelles, the steps of the Krebs cycle and the electron transport system occur in the
  30. In eukaryotes, electron transport occurs in
  31. In oxygenic photosynthesis, the electron donor is
  32. In oxygenic photosynthesis, water is split in order to provide the
  33. In the Calvin cycle, carbon dioxide is fixed in a reaction with the
  34. Important function of cholesterol is to
  35. More ATP is manufactured during __________ than at any other time in all of cellular metabolism.
  36. Most multi-cellular organisms obtain energy for the synthesis of ATP during oxidative phosphorylation from
  37. Most of the enzymes of the citric acid cycle in a eukaryotic cell are located in the
  38. NADP+ is reduced to NADPH during
  39. Oxidative deamination is the conversion of an amino
  40. Oxidative phosphorylation is to respiration as __________ is to photosynthesis
  41. Rubisco (RuBP Carboxylase-oxygenase enzyme), glyceraldehyde 3-phosphate, and NADPH all play a role in
  42. Standard redox potential for a substance is measured under standard condition and is expressed as
  43. The breakdown of glucose occurs by the process known as
  44. The catabolism of sugars and fatty acids is similar because
  45. The electrons that are released by the splitting of water during photosynthesis ultimately end up in
  46. The end product of glycolysis is pyruvate, which enters the citric acid cycle after being converted to
  47. The enzymes of the TCA cycle in a eukaryotic cell are located in the
  48. The FADH2 and NADH produced by the oxidation of one acetyl-CoA results in the synthesis of about-
  49. The first intermediate in TCA cycle is
  50. The followings are the products of the light reactions of photosynthesis except
  51. The manufacture of ATP in both photosynthesis and respiration is made possible by
  52. The rate of photorespiration in most plants increases at.higher temperatures. Some plants have evolved a somewhat round-about system to deal with this problem. This series of reactions is called
  53. The vast majority of the molecules that act as energy carriers to power cellular activities are made in
  54. To stop ATP synthesis which chemical is generally used?
  55. What do coenzyme A, CO2, oxaloacetate, and FADH2 all have in common?
  56. What process in cellular respiration is essentially the reverse of carbon fixation in photosynthesis?
  57. Where do the protons come from that make up the proton gradient used in the light reactions of photosynthesis?
  58. Where does the O2 come from that is essential for the proper functioning of oxidative phosphorylation?
  59. Which enzyme is involved in carbon-fixation reaction?
  60. Which of the following amino acids is considered as both ketogenic and glucogenic?
  61. Which of the following is involved in energy production?
  62. Which of the following is the best described glucogenic amino acid?
  63. Which of the following is the reduced form of a temporary electron carrier molecule?
  64. Which of the following represents a correct ordering of the events that occur during the respiration of glucose in the absence of O2?
  65. Which of the following serves as a reactant in photosynthesis and a product in cellular respiration?
  66. Which of the following structures or processes are logically associated with chloroplasts?
  67. Which one is not the main protein in electron transport chain?
  68. Which one of the following is a product of both cyclic and noncyclic photophosphorylation?
  69. Which one of the following is not the intermediate of Kreb's cycle?
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