Photosynthesis Quiz Flashcards

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1
Q

Equation for photosynthesis

A

Light + CO2 + H2O = C6H12O6 + O2

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2
Q

Light

A

light dependent e- transport chain, photosystems harvest light

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3
Q

CO2

A

RuBisCo fixes CO2 in Calvin Cycle

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4
Q

H2O

A

PSII of e- transport chain, e- is harvested from this H2O

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5
Q

C6H12O6

A

Glyceraldehyde 3-phosphate is used to build sugars (carb production)

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6
Q

O2

A

PSII by product

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7
Q

What product of the Calvin cycle leaves to make sugars?

A

Glyceraldehyde 3-phosphate

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8
Q

What enzyme fixes CO2 from the atmosphere?

A

RuBisCO

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9
Q

How do PSI and II harvest light?

A

By pigments

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10
Q

Which process uses the NADPH and ATP produced by electron transport?

A

Calvin Cycle

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11
Q

How many protein complexes harvest light during photosynthesis?

A

2

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12
Q

What are the products of the photosynthetic electron transport?

A

NADPH + ATP

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13
Q

Where is the light energy harvested by photosynthesis stored?

A

Chemical bonds

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14
Q

Where does photosynthesis occur?

A

The chloroplast

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15
Q

What is the starting material for the photosynthetic electron transport chain and what products are produced?

A

Light & H2O = NADPH & ATP

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16
Q

What is the starting material for the Calvin Cycle and what products are produced?

A

ATP, NADPH, CO2 = Glyceraldehyde 3-phosphate

17
Q

What is the role of PSII

A

Absorb light, use energy to break H2O into O and H, electron is harvested to start the e- transport chain

18
Q

Which two ions are produced when PSII splits water?

A

O2-. 4H+

19
Q

Each of the two ions enables the production of the two products. Link each ion to the product made from it

A

4H+ - ATP, O2- = NADPH

20
Q

What is the role of PQ

A

PQ receives the e- along with 2 protons from PSII and passes the e- to cytb6f

21
Q

What is the role of cytb6f?

A

Cytb6f passes the e- to PSI so it may be reenergized with more light

22
Q

What is the role of PC?

A

Carries/shuffles the e- from cytb6f to PSI

23
Q

What is the role of PSI?

A

Regeneration / reenergize, linked with ferrodoxin

24
Q

What is the role of Fdx?

A

Fdx transports e- to NADP reductase

25
Q

What is the role of NADP Reductase?

A

Reduces NADP to NADPH?

26
Q

What is the role of ATP synthesis?

A

ATP utilizes the proton gradient created by PSII and PQ to make ATP

27
Q

Which products will be used by the Calvin Cycle?

A

ATP, NADPH, CO2

28
Q

The herbicide atrazine is an enzyme inhibitor. Which of the electron transport chain enzymes is inhibited by atrazine? Why would this kill a plant? Do you think this compound would be toxic to animals?

A

Photosynthesis is ultimately blocked as electron transport PSII is inhibited by atrazine. This would kill plants with photosynthesis being unable to take place and no energy being capable of producing anything from the plants. This would also be toxic to animals as no ATP or NADPH is produced from this process.

29
Q

What products from the electron transport chain are used during the reduction stage

A

ATP and NADPH

30
Q

What are the fates of the G3P molecules

A

The G3P molecules leave to make sugars in carb production, only some are converted again in the regeneration phase

31
Q

What is the purpose of the regeneration phase?

A

For the cycle to continue and begin again