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Biochem Self Study > Photosynthesis > Flashcards

Photosynthesis Flashcards

1
Q

Photosystem II

A
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2
Q

Photosystem II: How many photons are required per electron transferred?

A

1

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3
Q

Photosystem II: How many electrons are required to make O2?

A

4

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4
Q

Photosystem II: How many protons are pumped into the lumen per O2 molecule made?

A

4

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5
Q

What are the intermediates transferring electrons from photosystem II and cytochrome b6f?

A

Plastocyanin and plastoquinone

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6
Q

What is the main product of Photosystem II?

A

ATP

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7
Q

Cytochrome b6f

A

is an enzyme found in the thylakoid membrane in chloroplasts that catalyzes the transfer of electrons from plastoquinol to plastocyanin

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8
Q

Cytochrome b6f: How many protons are pumped into the lumen per O2 molecule made?

A

8

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9
Q

Cytochrome b6f: What is the Q cycle?

A

Cycle by which 2 electrons are taken from PQ and transferred one at a time to plastocyanin

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10
Q

Cytochrome b6f: To what soluble molecule are electrons passed?

A

Plastocyanin

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11
Q

Photosystem I

A
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12
Q

Photosystem I: How many photons are required to elevate one electron?

A

1

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13
Q

Photosystem I: How many protons are pumped into the lumen?

A

0

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14
Q

photosystem I: To what soluble molecule are electrons passed?

A

Ferredoxin

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15
Q

What is the main product of photosystem I?

A

NADPH

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16
Q

Cyclic photophsophorylation

A

the synthesis of ATP coupled to electron transport activated by Photosystem I solely

17
Q

When does cyclic photophosphorylation occur?

A

When NADP+ is depleted

18
Q

What is the main product of cyclic photophosphorylation?

A

ATP

19
Q

Cyclic PPP: How many protons are pumped for each electron transferred?

A

2

20
Q

Calvin cycle

A

The dark reactions of photosynthesis are a series of chemical reactions that convert carbon dioxide, use the chemical energy of ATP, and reduce NADPH’s power from the light-dependent reactions into glucose.

21
Q

How many turns of the Calvin cycle are required to regenerate starting ribulose 5’ phosphate?

A

3

22
Q

Calvin cycle: The fixing of 1 carbon of CO2 requires how many NADPH?

A

2

23
Q

Calvin cycle: The fixing of 1 carbon of CO2 requires how many ATP?

A

3

24
Q

Transaldolase

A
25
Q

Transketolase

A
26
Q
A

Biochem Self Study (7 decks)

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