ch 8 exam 2 Flashcards

(17 cards)

1
Q

Which of the following components is not used by both plants and cyanobacteria to carry out photosynthesis?

A

chloroplasts

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2
Q

What two main products result from photosynthesis?

A

sugars/carbohydrates and oxygen

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3
Q

In which compartment of the plant cell do the light-independent reactions of photosynthesis take place?

A

stroma

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4
Q

Which statement about thylakoids in eukaryotes is not correct?

A

thylakoids exist as a maze of folded membranes

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5
Q

Predict the end result if a chloroplast’s light-independent enzymes developed a mutation that prevented them from activating in response to light.

A

ATP and NADPH accumulation

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6
Q

How are the NADPH and G3P molecules made during photosynthesis similar?

A

they both store energy in chemical bonds

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7
Q

Which of the following structures is not a component of a photosystem?

A

ATP synthase

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8
Q

How many photons does it take to fully reduce one molecule of NADP+ to NADPH?

A

2

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9
Q

Which complex is not involved in the establishment of conditions for ATP synthesis?

A

photosystem ll

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10
Q

From which component of the light-dependent reactions does NADPH form most directly?

A

photosystem l

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11
Q

Three of the same species of plant are each grown under a different colored light for the same amount of time. Plant A is grown under blue light, Plant B is grown under green light, and Plant C is grown under orange light. Assuming the plants use only chlorophyll a and chlorophyll b for photosynthesis, what would be the predicted order of the plants from most growth to least growth?

A

A,C,B

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12
Q

Plants containing only chlorophyll b are exposed to radiation with the following wavelengths: 10nm (x-rays), 450nm (blue light), 670nm (red light), and 800nm (infrared light). Which plants harness the most energy for photosynthesis?

A

blue light irradiated plants

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13
Q

Which molecule must enter the Calvin cycle continually for the light-independent reactions to take place?

A

CO2

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14
Q

Which order of molecular conversions is correct for the Calvin cycle?

A

RuBP + CO2 → [RuBisCO] 3-PGA → G3PRuBP + CO2 → [ RuBisCO ] 3-PGA → G3P

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15
Q

Where in eukaryotic cells does the Calvin cycle take place?

A

chloroplast stroma

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16
Q

Which statement correctly describes carbon fixation?

A

the conversion of CO2 into an organic compound

17
Q

If four molecules of carbon dioxide enter the Calvin cycle (four “turns” of the cycle), how many G3P molecules are produced and how many are exported?

A

4 G3P made, 1 G3P exported