Pages in this set

Page 1

Preview of page 1
Respiration
Glycolysis
Summary
1 molecule of Glucose (6C) GLYCOLYSIS
2ATP (in cytoplasm)

2ADP
Hexose bisphosphate (6C)




2 x Triose phosphate (3C)
NAD
4ADP + 4Pi



4ATP Reduced NAD


2 x Pyruvate (3C)


1. Glucose is phosphorylated to for hexose bisphosphate
2. 2 molecules of ATP are used to do this…

Page 2

Preview of page 2
Kreb's Cycle
Kreb's Cycle (in matrix of mitochondria)
Acetyl coenzyme A (2C) Coenzyme A



Acetate (2C) + Oxaloacetate (4C) = Citrate (6C)



Reduced FAD


FAD

ATP CO2
CO2

reduced NAD 5C intermediate compound
NAD
NAD

reduced NAD

1. These reactions also occur in the mitochondrial matrix
2. The acetate from…

Page 3

Preview of page 3
Chemiosmosis diagram




Evidence for chemiosmosis

Evidence Conclusion
Mitochondria have been isolated where the various enzymes are in the
Placed in solution of very low water mitochondria
potential. Water enters by osmosis. the link reaction and Krebs cycle take
This ruptured the outer membrane place in matrix
Releasing the contents of…

Page 4

Preview of page 4
Anaerobic respiration

In the absence of oxygen hydrogen cannot be used up by combining it with oxygen
So reduced NAD cannot be oxidised and re-cycled
There is less ATP available, so pyruvate cannot be pumped into the mitochondrial matrix
Instead the following happens :

In plants ­ Ethanol pathway In…

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »