Rubisco, C4 and CAM Flashcards
1
Q
rubisco
A
takes carbon from inorganic gaseous form to an organic compound
2
Q
role of rubisco
A
binding to CO2 and fixing the carbon onto organic 3-PGA
3
Q
photorespiration
A
rubisco binds to O2 instead limiting photosynthesis
4
Q
influences on rubisco
A
high temp- affinity for O2 is higher
substrate concentration- more O2
5
Q
C3
A
no adaptations to minimise photorespiration
6
Q
C4
A
2nd stage occurs in bundlesheath (seperate cell) cells to allow rubisco to work in low O2 and high CO2
7
Q
C4 examples
A
corn, sugarcane
8
Q
CAM
A
separates steps over time, stomata open at night to bring in CO2 and store in vacuoles, stomata close during day
9
Q
CAM examples
A
pineapple cactus orchids
10
Q
C3 examples
A
most plants
