4. Photosynth

Question 1

opposite of respirated eqn

Answer 1

yes

Question 2

process of light reactions

Answer 2

• splitting of water gives e-

light hits pigment 680 then down ETC PQ then 700 again, then FD then NADP+ reductase to NADPH and ATP

Question 3

cyclic photophosphorylation

Answer 3

• replenishes ATP but goes back from PSI to PSII

Question 4

Calvin cycle process

Answer 4

fixes co2 6 times.

1. rubisco fixes CO2 to RuBP to make PGA
2. then reduced by amp and NADPH
   - 3. regenerates RuBp using ATP
3. 2 G3P made glucose
   * 18 ATP used and 12 NADPH

Question 5

Calvin cycle occurs in

Answer 5

chloroplast stroma

Question 6

highest H+

Answer 6

lumen

Question 7

photolysis takes place in

Answer 7

lumen

Question 8

what absorbs light

Answer 8

thylakoid membrane

Question 9

chemiosmosis

Answer 9

• H+ in lumen, then come across and ATP synthase makes ATP

Question 10

photorespiration

Answer 10

rubisco fixes co2 as well when hot

* peroxisomes break this down

Question 11

c4 photosynth

Answer 11

• co2 absorbed by mesophyll, then moved to bundle sheath instead of being fixed into PGA, co2 combines with PEP to form OAA (4c)
• malate then transported via plasmodesmata into bundle sheet cell.
• co2 and pyruvate releases and then goes back to PEP

Question 12

where is c4 found

Answer 12

hot dry climates

- requires 1 app

Question 13

CAM photosynth

Answer 13

PEP carb fixes co2 to OAA then malic acid.

• at night, stomate open, and magic acid accumulates
• day, stomata close and then magic acid converted to OAA then Co2 to fix

Question 14

CAM poants

Answer 14

• cacti stuff

- also uses 1 atp

Question 15

Calvin cycle is light

Answer 15

independent, but needs light dependent products