Cellular Respiration Flashcards
Rebox Reactions
Oxidation and reduction
Always couples
the reduced molecule needs to be close to the oxidized molecule
Oxidation
an electron is stripped off a molecule
Reduction
A molecule accepts an electron from another molecule
3 steps of cellular respiration
Glycolysis: in the cytosol of the cell
Krebs Cycle: in the mitochonrial matrix
Electron transport chain: in the mitochondrial inner membrane.
2 phases of gylcolysis
Energy investment
Energy payoff
Summery equation for glycolysis
glucose …..to…. 2 Pyruvate+2 APT + 2 NAPH
Kreb cycle reactants (in)
Acetyl CoA + NAD+ + FAD + ADP +P
NADH and FADH
Electron carriers, take electrons fron Kreb cycle to the ETC
Each Private acid generates
1 ATP
6 NADH
2 FADH
4 CO2
Each glucose molecule generates
2 pyruvate
What happens if there is no O2
Kreb cycle and ETC shut down
Glycolysis continues to make 2 ATP only if there is NAD+
How do we get NAD + in the absence og Kren cycle and ETC
Alcohol fermentation or Lactic acid Fermintation
Purpose of fermentation
Gives NADH a place to drop off ts electrons and return to glycolysis as NAD+
Lactic acid fermintation
anaerobic respiration
2 pyruvic acid molecules enter
Lactic acid fermintation products
Lactic acid
2 Carbon dioxide
2 NAD+
