photsystem frq

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Last updated 4:32 AM on 12/16/25
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<p>(a) Describe the role of chlorophyll in the photosystems of plant cells.</p>

(a) Describe the role of chlorophyll in the photosystems of plant cells.

Absorbs light for energy

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<p>b) Based on Figure 1, explain why an increase in the ratio of NADPH to NADP+ will cause an increase in the flow of electrons through the cyclic pathway.</p>

b) Based on Figure 1, explain why an increase in the ratio of NADPH to NADP+ will cause an increase in the flow of electrons through the cyclic pathway.

There is less/no NADP+ to accept the electrons, so the electrons pass to the cyclic pathway to the cytochrome complex.

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<p>(c) Using rice plants, scientists examined the effect of a mutation that results in the loss of</p><p class="p1">the protein CRR6. CRR6 is a part of the photosystem I complex, and its absence reduces the activity of photosystem I. Predict the effect of the mutation on the rate of biomass (dry weight) accumulation.</p>

(c) Using rice plants, scientists examined the effect of a mutation that results in the loss of

the protein CRR6. CRR6 is a part of the photosystem I complex, and its absence reduces the activity of photosystem I. Predict the effect of the mutation on the rate of biomass (dry weight) accumulation.

Rate of biomass accumulation will decrease

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<p><span>(d) Justify your prediction in part (c).</span></p>

(d) Justify your prediction in part (c).

Not enough NADPH/ATP produced the Calvin cycle