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BIO Chapter 9

Cellular Respiration

TermDefinition
Four steps of cellular respiration- glycolysis, pyruvate oxidation, citric acid cycle, oxidative phosphorylation
Products of glycolysis- 2 ATP, 2 NADH, 2 H2O, 2 pyruvates
Energy investment phase of glycolysis- the investment of 2 ATP to start the breakdown of glucose
Energy payoff phase of glycolysis- the production of 4 ATP and 2 NADH, resulting in 2 pyruvates and 2 water molecules
Where does glycolysis take place?- cytosol of mitochondria
Pyruvate oxidation- the pairing of a CoA enzyme to each pyruvate, resulting in Acetyl CoA and 2 NADH
What is lost in pyruvate oxidation? 2 CO2
Where does pyruvate oxidation take place? mitochondria
What are the products of the Citric acid cycle? 6 NADH, 2 FADH2, 2 ATP
For one glucose molecule to start, how many times does the citric acid run? Twice
What is the first molecule in the citric acid cycle? citrate
What is the last molecule produced in the citric acid cycle? Oxaloacetate
What is lost in the citric acid cycle? CO2
Where does oxidative phosphorylation take place? Mitochondrial membrane
What is donated to oxidative phosphorylation by the citric acid cycle? FADH2 and NADH
How many electrons travel down the electron transport chain? 2 electrons
What happens to protons during oxidative phosphorylation? energy released pumps protons across the electron transport chain to form a proton motive force in the intermembrane space
What is the proton concentration like in the matrix of the mitochondria? there is a low proton concentration
What is the final acceptor of electrons on the electron transport chain? oxygen
What function of the ATP Synthase? proton motive force is pumped through, creating about 26-28 ATP
What is the making of ATP driven by? the transfer of electrons from food to oxygen
What is a product of the fourth major protein on the transport chain? Water
How do electrons move down the electron transport chain? a series of redox reactions
Chemiosmosis- coupling of proton motive force with the creation of ATP
1 NADH=? 2 ½ ATP
1 FADH2=? 1 ½ ATP
How many ATP are made in cellular respiration? You didn't have an answer but I think its 38
What is the formula for cellular respiration? C6H12O6 + 6O2 Right Arrow 6CO2 + 6H2O + Energy
Created by: mr_spangler