Photosynthesis

Question 1

does photosynthesis occur in plants or animal cells

Answer 1

plants

Question 2

what is the equation for photosynthesis

Answer 2

6CO2 + 6H20 –> C9H12O6 + 6O2

Question 3

where in the cell does photosynthesis occur in

Answer 3

• chloroplasts

Question 4

describe what the chloroplast structure looks like/contains

Answer 4

• 3 membranes: inner, outer, and thylakoid

- 3 compartments: intermembrane space, stroma, thylakoid space

Question 5

where does the light reaction take place in. also where does carbon fixation occur in

Answer 5

• light = thylakoid

- carbon fixation = stroma

Question 6

describe what happens in the light reaction

Answer 6

• captures light energy and converts it to chemical energy

- does this by using pigment and protein complexes embedded in the thylakoid membrane

Question 7

describe the parts in Photosystems capture light energy stage

Answer 7

1) photosystems are protein complexes that contain the chlorophyll
2) chlorophyll absorbs light energy
3) light energy absorbs by chlorophyll produce high energy electrons
4) high energy electrons travel through the photosynthetic electron transport chain

Question 8

describe the order of the electron transport chain

Answer 8

1) goes through Photosystem 2
2) then cytochrome complex
3) Photosystem 1
4) NADP reductase
5) ATP synthase

Question 9

what happens in the light reaction

Answer 9

• water has been split and 02 is produced, also ATP and NADPH are produced

Question 10

describe the Calvin cycle/carbon fixation

Answer 10

• ATP and NADPH that were produced in the light reactions are used to fix CO2 and produce carbohydrates
• the output of the Calvin cycle is a 3-carbon sugar that is converted to glucose
• plant cells bread down the glucose form photosynthesis in the mitochondria using cellular respiration

Question 11

what are the inputs and outputs during photosynthesis

Answer 11

• inputs: light, water, carbon

- outputs: glucose, oxygen

Question 12

where is ATP and NADPH only used after they are produce in the light reaction

Answer 12

• in the Calvin cycle

Question 13

what is one of the energy supply in both animals and plants called, and where do they get it

Answer 13

• glucose
  Animals must have an external source of it
  plants generate it during photosynthesis

Question 14

what is the other energy supply in animals and plants, and where do they get it/describe the it

Answer 14

• ATP
• is generated in both respiration and photosynthesis
• ATP synthase is responsible for ATP generated in both processes
• requires a proton gradient across a membrane in both animals and plants