Photosynthesis

Question 1

What is the overall chemical equation for photosynthesis?

Answer 1

6CO2 + 6H2O + light energy -> C6H12O6 + 6O2

Question 2

Where does photosynthesis take place in a plant cell?

Answer 2

In the chloroplasts

Question 3

What are the two stages of photosynthesis?

Answer 3

Light-dependent reactions and light-independent reactions (Calvin cycle)

Question 4

What is the primary pigment involved in photosynthesis?

Answer 4

Chlorophyll

Question 5

What is the role of chlorophyll in photosynthesis?

Answer 5

To absorb light energy for the process

Question 6

What is the source of oxygen produced during photosynthesis?

Answer 6

Water

Question 7

What is the purpose of the light-dependent reactions in photosynthesis?

Answer 7

To produce ATP and NADPH

Question 8

What is the purpose of the Calvin cycle in photosynthesis?

Answer 8

To produce glucose using ATP and NADPH

Question 9

What is the role of carbon dioxide in photosynthesis?

Answer 9

To provide carbon for glucose production

Question 10

What is the role of water in photosynthesis?

Answer 10

To provide electrons for the light-dependent reactions

Question 11

What is the function of ATP in photosynthesis?

Answer 11

To provide energy for cellular processes

Question 12

What is the function of NADPH in photosynthesis?

Answer 12

To provide reducing power for glucose production

Question 13

What is the significance of photosynthesis in the ecosystem?

Answer 13

It is the primary source of energy for most living organisms

Question 14

What are the factors that can affect the rate of photosynthesis?

Answer 14

Light intensity, carbon dioxide concentration, and temperature

Question 15

What is the relationship between photosynthesis and cellular respiration?

Answer 15

They are complementary processes where the products of one are the reactants of the other

Question 16

What is the role of stomata in photosynthesis?

Answer 16

To allow for gas exchange (CO2 in, O2 out)

Question 17

What is photolysis in photosynthesis?

Answer 17

The splitting of water molecules to release oxygen, electrons, and protons

Question 18

What is the role of the electron transport chain in the light-dependent reactions?

Answer 18

To generate a proton gradient for ATP production

Question 19

What is the role of rubisco in the Calvin cycle?

Answer 19

To catalyze the fixation of carbon dioxide

Question 20

What is the significance of the Calvin cycle in photosynthesis?

Answer 20

It is responsible for the production of glucose

Question 21

What is the role of NADP+ in photosynthesis?

Answer 21

To accept electrons and hydrogen ions to form NADPH

Question 22

What is the role of the thylakoid membrane in photosynthesis?

Answer 22

To house the components of the light-dependent reactions

Question 23

What is the fate of the glucose produced in photosynthesis?

Answer 23

It can be used for energy production, stored as starch, or converted into other molecules

Question 24

What are the end products of the light-dependent reactions?

Answer 24

ATP, NADPH, and oxygen

Question 25

What are the end products of the Calvin cycle?

Answer 25

Glucose and ADP

Question 26

What is the role of light in photosynthesis?

Answer 26

To provide energy for the process

Question 27

What is the role of the antenna complex in photosynthesis?

Answer 27

To absorb and transfer light energy to the reaction center

Question 28

What is the role of the reaction center in photosynthesis?

Answer 28

To initiate the flow of electrons in the light-dependent reactions

Question 29

What is the significance of photosynthesis for humans?

Answer 29

It provides oxygen for respiration and food for sustenance

Question 30

What is the role of ATP synthase in photosynthesis?

Answer 30

To produce ATP from ADP and inorganic phosphate using the proton gradient

Question 31

What is the importance of the Z scheme in photosynthesis?

Answer 31

It describes the flow of electrons in the light-dependent reactions

Question 32

Why is photosynthesis considered an endothermic reaction?

Answer 32

Because it requires an input of energy in the form of light

Question 33

What is the role of the enzyme RuBisCO in photosynthesis?

Answer 33

To catalyze the carboxylation of ribulose-1,5-bisphosphate in the Calvin cycle

Question 34

What is the role of the stroma in photosynthesis?

Answer 34

To house the enzymes for the Calvin cycle

Question 35

What is the role of the granum in photosynthesis?

Answer 35

To house the thylakoid membranes where the light-dependent reactions occur

Question 36

What is the role of the cytochrome complex in photosynthesis?

Answer 36

To transfer electrons between photosystems in the light-dependent reactions