alternative methods Flashcards
1
Q
C3 plants
A
initial fixation of carbon via rubisco
adds CO2 to RuBP
2
Q
what happens with little CO2
A
photorespiration
3
Q
photorespiration
A
instead of binding CO2, they bind O2 in the calvin cycle and releases CO2
-uses ATP
4
Q
what is the point for photorespiration
A
protection
-from damage by excessive light
5
Q
C4 plants
A
first product of the calvin cycle is 4 carbon
- this is sent to bundle sheath cells that release CO2 for the calvin cycle
- CO2 is incorporated in organic intermediates before thecalvin cycle
6
Q
rice wheat and soybeans
A
c3
7
Q
sugarcane and corm
A
c4 plants
8
Q
CAM plants
A
open stomata at night to keep water
- and store it until morning when the light an power the light reactions
- CO2 is incorporated in organic intermediates before thecalvin cycle
9
Q
Cam fixation is called
A
crassulacean acid metabolism
