Photosynthesis

Question 1

Photosynthesis can be carried out of certain _________ and _____________

Answer 1

Certain protists, bacteria, and plants

Question 2

CO2 is _____ during photosynthesis

Answer 2

Reduced

Question 3

H2O is _______ during photosynthesis

Answer 3

Oxidized

Question 4

Light dependent reaction occurs in_______

Answer 4

The thylakoid membrane of the chloroplast

Question 5

Calvin cycle occurs in _______

Answer 5

The stroma

Question 6

The input and output of the light dependent reaction

Answer 6

Inputs: H2O, light, NADP+
Outputs: NADPH, ATP, O2

Question 7

Where is oxygen gas produced?

Answer 7

Photosystem 2 from the light dependent reaction

Question 8

Where is NADPH produced?

Answer 8

Photosystem 1

Question 9

From where and to where are protons pumped?

Answer 9

From stroma to lumen

Question 10

Where is NADP+ in?

Answer 10

Stroma

Question 11

Photosystem 2’s functions

Answer 11

1. Produces oxygen by oxidizing water
2. Shuffles the electron to plastoquinone

Question 12

Photosystem 1’s function

Answer 12

1. Shuffle the electron to ferrodoxin
2. Reduces NADP+ to NADPH, further reducing the proton concentration in the stroma

Question 13

Photosystem 1 is also called

Answer 13

P700

Question 14

Photosystem 2 is called

Answer 14

P680

Question 15

Electron pathway in light dependent reaction

Answer 15

PS2 > plastoquinone > cytochrome b6f complex > plastocyanin > ps 1 > ferredoxin > NADP+ reductase

Question 16

What is photolysis?

Answer 16

Photolysis is the process of splitting a water molecule into oxygen and thus regaining a pair of electron that was loss when a ray of photon hits the photo system two, exciting the electrons.

Question 17

Photolysis occurs at _____

Answer 17

PS2

Question 18

Calvin Cycle stages

Answer 18

• CO2 fixation
• CO2 reduction
• RuBP regeneration

Question 19

In order to produce 1 molecule of glucose to be produced, the Calvin cycle has to occur __ times

Answer 19

6

Question 20

In order to produce 1 molecule of G3P to be produced, the Calvin cycle has to occur __ times

Answer 20

3

Question 21

Input and output of the Calvin cycle

Answer 21

Input: NADPH, CO2, ATP
Output: NADP+, ADP, G3P

Question 22

The components of the ETC of photosynthesis that pump protons

Answer 22

Plastoquinone and cytochrome b-6f complex

Question 23

CO2 fixation

Answer 23

CO2 is fixed by RuBP (Ribulose-1,5-bisphosphate) into PGA (3-phosphoglycerate). This reaction is catalyzed by rubisco enzyme (Ribulose-1,5-bisphosphate carboxylase oxygenase).

Question 24

Reduction of CO2

Answer 24

PGA (3-phosphoglycerate) is phosphorylated by ATP into 1,3-bisphosphoglycerate.
1,3-Bisphosphoglycerate is reduced by NADPH into G3P.

Question 25

Regeneration of RuBP

Answer 25

Molecules of ATP are used to turn G3P into RuBP.