Course Guide Chapter 10: Photosynthesis Flashcards
Where does the light reactions occur?
thylakoid membranes
Where does ATP synthesis take place?
protons pumped from the stroma into the thylakoid space
What are the inputs of the light reactions?
Light (energy), ADP, Pi, NADP, H2O
What are the outputs of the light reactions?
O2, ATP, NADPH
What is the first step of the Calvin cycle?
CO2 is combined with 5-C compound ribulose biphosphate to generate two 3-C compounds 3-phosphoglycerate by rubisco
After CO2 is combined with 5-C compound ribulose biphosphate to generate two 3-C compounds 3-phosphoglycerate by rubisco, what is the next step of the Calvin cycle?
phosphorylation of 3-phosphoglycerate into 1,3-biphospho-glycerate by phosphoglycerate kinase
After phosphorylation of 3-phosphoglycerate into 1,3-biphospho-glycerate by phosphoglycerate kinase, what is the next step of the Calvin cycle?
1,3-biphosphoglycerate is dephosphorylated and reduced to glyceraldehyde 3-phosphate
After 1,3-biphosphoglycerate is dephosphorylated and reduced to glyceraldehyde 3-phosphate, what is the next step of the Calvin cycle?
glucose and other carbohydrates are synthesized from 1 out of 6 molecules of glyceraldehyde 3-phosphate
After glucose and other carbohydrates are synthesized from 1 out of 6 molecules of glyceraldehyde 3-phosphate, what is the next step of the Calvin cycle?
five glyceraldehyde 3-phosphates are used to regenerate 3 molecules of ribulose biphosphate
What are the inputs of the Calvin cycle?
CO2 + ATP + NADPH + H2O
What are the outputs of the Calvin cycle?
C6H12O6 + ADP + Pi + NADP+ + H2O + H+ + O2
Decribe C4 plants
use PEP carboxylase to fix CO2 into 4 C sugars in the mesophyll cells
Describe CAM plants
carry out C3 reactions during the day (stomata are closed and ATP and NADPH are available) and C4 reactions at night (stomata are open and CO2 is available)
