Page 23 - Teknik Menjawab Soalan PSPM Biologi

Suggested Answer:

1 M 1 M

C pathway is also called Hatch- Slack pathway. CO fix with phosphoenolpyruvate (PEP)
4
2
(in the mesophyll cells) to form oxaloacetate (OAA). This process catalyses by PEP
1 M
carboxylase.
1 M
1 M OAA will be converted to malate (4C). Malate is transported to bundle sheath cells. Malate

converted to pyruvate (3C)and releasing CO 1 M
1 M 2 1 M

CO react with RuBP to form PGA (3- Phosphoglycerate) in bundle sheath cell. Ribulose RuBP 1 M
2
carboxylase (rubisco) in Calvin cycle

1 M 1 M
Pyruvate is transported back to mesophyll cell and converted to PEP using energy from ATP C plants
4
have adaptation to fix CO efficiently 1 M
2