Photosynthesis Quiz

Question 1

Equation for photosynthesis

Answer 1

Light + CO2 + H2O = C6H12O6 + O2

Question 2

Light

Answer 2

light dependent e- transport chain, photosystems harvest light

Question 3

CO2

Answer 3

RuBisCo fixes CO2 in Calvin Cycle

Question 4

H2O

Answer 4

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

Question 5

C6H12O6

Answer 5

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

Question 6

O2

Answer 6

PSII by product

Question 7

What product of the Calvin cycle leaves to make sugars?

Answer 7

Glyceraldehyde 3-phosphate

Question 8

What enzyme fixes CO2 from the atmosphere?

Answer 8

RuBisCO

Question 9

How do PSI and II harvest light?

Answer 9

By pigments

Question 10

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

Answer 10

Calvin Cycle

Question 11

How many protein complexes harvest light during photosynthesis?

Answer 11

2

Question 12

What are the products of the photosynthetic electron transport?

Answer 12

NADPH + ATP

Question 13

Where is the light energy harvested by photosynthesis stored?

Answer 13

Chemical bonds

Question 14

Where does photosynthesis occur?

Answer 14

The chloroplast

Question 15

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

Answer 15

Light & H2O = NADPH & ATP

Question 16

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

Answer 16

ATP, NADPH, CO2 = Glyceraldehyde 3-phosphate

Question 17

What is the role of PSII

Answer 17

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

Question 18

Which two ions are produced when PSII splits water?

Answer 18

O2-. 4H+

Question 19

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

Answer 19

4H+ - ATP, O2- = NADPH

Question 20

What is the role of PQ

Answer 20

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

Question 21

What is the role of cytb6f?

Answer 21

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

Question 22

What is the role of PC?

Answer 22

Carries/shuffles the e- from cytb6f to PSI

Question 23

What is the role of PSI?

Answer 23

Regeneration / reenergize, linked with ferrodoxin

Question 24

What is the role of Fdx?

Answer 24

Fdx transports e- to NADP reductase

Question 25

What is the role of NADP Reductase?

Answer 25

Reduces NADP to NADPH?

Question 26

What is the role of ATP synthesis?

Answer 26

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

Question 27

Which products will be used by the Calvin Cycle?

Answer 27

ATP, NADPH, CO2

Question 28

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?

Answer 28

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.

Question 29

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

Answer 29

ATP and NADPH

Question 30

What are the fates of the G3P molecules

Answer 30

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

Question 31

What is the purpose of the regeneration phase?

Answer 31

For the cycle to continue and begin again