Photosynthesis

Question 1

What is the formula for photosynthesis?

Answer 1

6CO2 + 6H2O →SUNLIGHT C6H12O6 + 6O2

Question 2

Name the two parts of photosynthesis.

Answer 2

Light-dependent and light-independent.

Question 3

Where does photosynthesis occur in the plant cell?

Answer 3

Chloroplast

Question 4

Name the parts of the chloroplast.

Answer 4

Stomata; stroma; thylakoid

Question 5

Name the parts of the thylakoid

Answer 5

Chlorophyll; lumen

Question 6

What is chlorophyll?

Answer 6

pigments that absorb light. Different chlorophyll absorb different light.

Question 7

What are photons?

Answer 7

Bundles of light energy that excite electrons.

Question 8

Which wavelength carries more energy?

Answer 8

Short wavelengths

Question 9

List inputs for light dependent reaction.

Answer 9

Sunlight, H2O, NADP+, ADP, Pi

Question 10

List outputs for light dependent reaction.

Answer 10

O2, NADPH, ATP

Question 11

What process happens in light dependent reaction?

Answer 11

The electron transport chain.

Question 12

Describe the process of photoact

Answer 12

Photons excite chlorophyll and they give up an electron (are oxidized).

Question 13

Describe the process during the electron transport chain.

Answer 13

Photons excite electrons in chlorophyll; H2O is split into 2 H+, 2 electrons, and O2. Electron is delivered to PSII reaction center. H+ is pumped into lumen. The electron is reengerized in PSI through photon excitation. Then the electron plus H+ goes to NADP+ which is reduced to NADPH, which enters the Calvin cycle.

Question 14

Where does the Calvin Cycle occur?

Answer 14

In the stroma.

Question 15

What are the inputs for the Calvin Cycle?

Answer 15

CO2, ATP, NADPH

Question 16

What are the outputs for the Calvin Cycle?

Answer 16

CH2O, ADP, Pi, NADP+

Question 17

List in order the three phases of the calvin cycle

Answer 17

Fixation; reduction; regeneration

Question 18

What happens in fixation?

Answer 18

3 CO2 go into enzyme Rubisco to combine carbons from CO2 to RuBP to form 2, 3-PGA.

Question 19

What happens in reduction?

Answer 19

ATP and NADPH are used to add electrongs and make 6 G3P (which make glucose). Only 1 out of every 5 leave the cycle.

Question 20

What happens in regeneration?

Answer 20

RuBp is regenerated from remaining G3P. During a series of 10 reactions, G3P are rearranged into RP. RP is phosphorylated to produce RuBp, which goes back to the start of the cycle.

Question 21

What is photolysis?

Answer 21

chemical compound is broken apart by photons. In photosynthesis, this is H2O, which is broken up into 2 H+ and O2.

Question 22

List in order the four steps of light-dependent reaction

Answer 22

Absorbed light in chlorophyll excites electron, H2O is split and creates O2 and 2 H+; electrons and H+ to NADP+ reducing it to NADPH.

Question 23

What is the function of PSII?

Answer 23

Capture energy from light to split H2O.

Question 24

What is the function of PSI?

Answer 24

Capture energy to reduce NADP+ to NADPH.

Question 25

Where does the light dependent part of photosynthesis occur?

Answer 25

The thyklakoid membrane.

Question 26

What light/color does Chloraphyll A absorb? Reflect? Where is it located?

Answer 26

Absorbs red and blue. Reflects green. Found in thylakoid membrane.

Question 27

What light/color does Chlorophyll B absorb? Reflect? Where is it located?

Answer 27

Absorbs blue; reflects yellow, red, and orange. Found in thylakoid membrane.