PHOTOSYNTHESIS
C 4 PHOTOSYNTHESIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In Photosynthetic electron transport, electrons travel through carriers organized in the “Z scheme"The following are indicated as directions of electron flow:P680 ____ PQa ____ PQb ____ Cytb6f ____ Pheo ____ PC ____ P700P700 ____ A0 ____ A1 ____ FeSx ____ FeSA ____ FeSB ____ FdP680 ____ Pheo ____ PQA ____ PQB ____ Cytb6f ____ PC ____ P700 P700 ____ A1 ____ A0 ____ FeSB ____ FeSA ____ FeSx ____ FdWhich one of the following is correct?
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1 and 2
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2 and 3
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3 and 4
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1 and 4
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Explanation:
Detailed explanation-1: -The Z scheme shows the pathway of electron transfer from water to NADP+. Using this pathway, plants transform light energy into “electrical” energy (electron flow) and hence into chemical energy as reduced NADPH and ATP.
Detailed explanation-2: -Thus, water is electron donor to P680 during light reactions of photosynthesis.
Detailed explanation-3: -So, the correct answer is ‘PSII, plastoquinone, cytochromes, PSI, ferredoxin’.
Detailed explanation-4: -Z scheme describes the oxidation or reduction changes that take place in light reactions of photosynthesis. Here, both the photosystems are involved in the transfer of an electron, the transfer of electron resembles Z shape.
There is 1 question to complete.