hú nydlothermal vents 17. In which part of photosynthesis is carbon fixed from a
ID: 212797 • Letter: H
Question
hú nydlothermal vents 17. In which part of photosynthesis is carbon fixed from a. Photosystem I b. Photosystem II c. Electron transport chain dCalvin cycle e. Reduction of NADP+ 18. Ph otosystem I and photosystem II differ in which of the following ways Photosystem II splits water, photosystem I does not b. Photosystem I is capable of cyclic electron flow, photosystem II is not c. Photosystem I is capable of producing NADPH, photosystem II is not d. Both A and B e. All of the above and its AG would be 19. Overall the process of photosynthesis is a a. Exergonic reaction, positive b. Endergonic reaction, negative Exergonic reaction, negative d. Endergonic reaction, positive to chemical energy. and it converts 0 Chlorophyll is type ofExplanation / Answer
17) Option D is the correct answer.
Calvin cycle is responsible for carbon-dioxide fixation in plants. One turn of calvin cycle fixes 1 molecule of CO2.
18) Option E is the correct answer.
All of the above are correct. PS II splits water to generate electrons for transport. PS I is involved in cyclic photophosphorylation and produces NADPH while PS II does not.
19) Option D is the correct answer.
Photosynthesis is endergonic because it requires energy; and glucose- the product- has more energy than its reactants. Endergonic reactions require an input of energy and the G for that reactionwill be a positive value.
21) Option D is the correct answer.
Both A and B are correct. Light reaction is responsible for using H2O and releasing oxygen as well as producing NADPH and ATP. Sugar is produced from CO2 fixation in dark reaction of photosynthesis and involves calvin cycle.
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