Topic 4 Photosynthesis: Chemiosmosis in Chloroplasts

Question 1

• Uses H+ gradient to generate ATP

Answer 1

Chemiosmosis

Question 2

• H+ ions accumulated inside thylakoids
  a. Here H+ are released into lumen when water is split by PSII
  b. H+ carried into lumen from stroma by cytochrome between PSII and PSI

Answer 2

Step 1

Question 3

• pH and electrical gradient created with pH of 5

Answer 3

Step 2

Question 4

• ATP synthase generated ATP

a. ADP is phosphorylated with Pi to form ATP, 3 H+ are required to make 1 ATP

Answer 4

Step 3

Question 5

• Calvin Cycle produces 2 G3P using NADPH, CO2, and ATP

a. At end of ETC following PSI, 2 electrons produce NADPH

Answer 5

Step 4