Additional Respiration Flashcards
Where does glycolysis occur?
Cytoplasm
What are the three steps of glycolysis?
Phosphorylating glucose to glucose phosphate using 2 ATP
Production of 2 triose phosphate
Oxidation of 2 triose phosphate to 2 pyruvate
What are the net products gained in glycolysis?
2 ATP
2 NADH
Where do the 2 pyruvate molecules go after glycolysis?
To the matrix
What are the steps of the links reaction?
Pyruvate oxidised to acetate
NAD is reduced and CO2 is lost
Co-enzyme A combines with acetate to produce acytlecoenzyme A
What are the products of the links reaction?
2 x CO2
2 x Acytle CoA
2 x NADH
What are the steps of the krebs cycle?
4 C molecule binds to Acytle (2C)
6C molecule made + CoA is lost
2 CO2 lost + 3 NAD reduced + 1 FAD reduced + ATP
Series of redox reactions to form 4C molecule
What are the products of the Krebs cycle? (per glucose)
6 NADH
2 FADH
4 CO2
2 ATP
Where does the krebs cycle occour?
Matrix
Where does oxidative phosphorylation occur?
Cristae
What are the stages of oxidative phosphorylation?
Release of H+ and e- from FADH and NADH
electron transport chain provides energy for movement of H+ into intermembrane space
Electrochemical gradient causes H+ to move down ATP synthase and catalyse phosphorylation of ADP
Oxygen binds with electrons and proton to form water
Why is oxygen important for Oxidative Phosphorylation?
Final proton acceptor
without which electrons would stop flowing and process would cease
Where does anaerobic respiration occur?
Cytoplasm
What happens to pyruvate in anaerobic respiration?
It is reduced and forms Lactate
Gains a H from NADH
Why is pyruvate converted to lactate?
to re-oxidise NADH so that glycolysis can continue
2x ATP produced
