Chapter 7 Flashcards
Cellular respiration
Biochemical pathway for extracting energy from chemical bonds in gluclose
(ATP)
Which organisms do cellular respiration
Animals, plants, many fungi, protists and prokaryotes
Chemical reaction summary of C/R
C6H12O6 + 6O2 ∆ 6CO2 + 6H2O + ATP
Stages of C\R
Glycolysis
Transition step
Krebs cycle
E.T.C
Krebs cycle is aka
Citric acid cycle
Where does glycolysis occur
Cytoplasm
What are the end products of glycolysis
2 Pyruvate
4 ATP (net)
2 NADH
What are the reactants of glycolysis
Gluclose
2 ATP
2 NAD+
Transition step moves what to where
Pyruvate to acetyl CoA from cytoplasm to mitochondria
What are the reactants of transition step
Pyruvate
3NAD+
Coenzyme A
What are the products of transition step
CO2
NADH
Acetyl CoA
Where does Krebs Cycle occur
Mitochondria
What are the reactants of Krebs cycle
1 Acetyl CoA
3 NAD+
1 FAD
1 ADP
What are the products of Krebs cycle
2 CO2
3 NADH
1 FADH_2
1 ATP
Coenzyme A
Where does the ETC occur
Between the inner matrix and intermembrane space of mitochondria
What are the reactants of ETC
Electron carriers NADH, FADH_2
O2
Protons
What are the products of ETC
Water
ATP
Proton gradient
NAD+
FAD
What is driven/moved by portion gradient
ATP Synthase
Theoretical ATP output of C/R per gouclose
36 ATP
Real life output from C/R per gluclose
30-32 ATP
What happens to C/R if there is no oxygen
Krebs cycle and ETC shut down
Glycolysis can keep going
What must happen to keep glycolysis going with a lack of oxygen
Fermentation
What are the products of fermentaion
ATP
NADH
Pyruvate
Lactate (animals)
CO2 and Ethanol (plants and yeast)
