Sail E0 Webinar

MCQs

Total Questions : 88 | Page 3 of 9 pages
Question 21. Oxidative phosphorylation is to respiration as __________ is to photosynthesis
  1.    light capture by chlorophyll
  2.    reduction of NADPH
  3.    electron transport chain
  4.    carbon fixation
 Discuss Question
Answer: Option C. -> electron transport chain
Question 22. In oxygenic photosynthesis, water is split in order to provide the
  1.    electrons needed for cyclic photophosphorylation
  2.    O2 needed for the dark reactions
  3.    electrons needed to reduce NADH
  4.    electrons needed to reduce P680
 Discuss Question
Answer: Option D. -> electrons needed to reduce P680
Question 23. During the light-dependent reactions of photosynthesis, which of the following does not occur?
  1.    Splitting of water
  2.    Release of oxygen
  3.    Carbon dioxide fixation
  4.    Absorption of light energy by photosystems
 Discuss Question
Answer: Option C. -> Carbon dioxide fixation
Question 24. Where do the protons come from that make up the proton gradient used in the light reactions of photosynthesis?
  1.    ATP
  2.    NADPH
  3.    H2O
  4.    Glucose
 Discuss Question
Answer: Option C. -> H2O
Question 25. Which of the following structures or processes are logically associated with chloroplasts?
  1.    Plant cells
  2.    Thylakoid membranes
  3.    Chlorophyll
  4.    All of these
 Discuss Question
Answer: Option D. -> All of these
Question 26. Hydrogen (electron) acceptor in the light reactions is
  1.    ADP
  2.    NAD+
  3.    NADP+
  4.    FADH
 Discuss Question
Answer: Option C. -> NADP+
Question 27. What do NAD+, NADP+, and FAD+ all have in common?
  1.    They are what is used during carbon fixation in photosynthesis
  2.    They are oxidized
  3.    They are reduced
  4.    They have a full complement of electrons
 Discuss Question
Answer: Option B. -> They are oxidized
Question 28. The cytochrome c oxidase complex
  1.    pumps protons out of the matrix space
  2.    accepts electrons from cyt c
  3.    donates four electrons to O2
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 29. Which of the following serves as a reactant in photosynthesis and a product in cellular respiration?
  1.    Sunlight
  2.    ATP
  3.    O2
  4.    CO2
 Discuss Question
Answer: Option D. -> CO2
Question 30. In the Calvin cycle, carbon dioxide is fixed in a reaction with the
  1.    ribose tri phosphate
  2.    ribulose diphosphate
  3.    3-phosphoglyceric acid
  4.    ribulose phosphate
 Discuss Question
Answer: Option B. -> ribulose diphosphate

Latest Videos

Latest Test Papers