Lecture 25 Flashcards
The presence of oxygen in cell metabolism allows
more options, and more ATP to be made because it oxidizes glucose all the way to CO2 and H2O
What happens when O2 is available to pyruvate?
Acetyl CoA synthesis
Acetyl CoA synthesis is important because
it is the bases for generating many more electrons for ATP biosynthesis (entry point for citric acid cycle)
Acetyl CoA steps
Glycolysis -> Pyruvate + coenzyme A + NAD+ + PDH -> Acetyl CoA
Where does Acetyl CoA occur in the cell?
In the mitochondrial Matrix
Full name of NAD+
Nicotinamide Adenine Dinucleotide
What is NAD+
a coenzyme that is reduced to NADH after accepting a pair of electrons and protons (H+)
Full name of FAD
Flavin Adenine dinucleotide
What is FAD
coenzyme that accepts electron pair and protons
Difference of NADH and FADH2
Electrons are in lower energy bonds in FADH2 than NADH, so FADH2 drives lower energy reactions than NADH
Krebs/ Citric acid cycle is important because
it provides the electrons and protons for the phosphorylation and creation of ATP
Krebs/ Citric acid cycle enzymes needed
CKSSFO
Can Krebs stop shopping for oatmeal
Citric acid (8C)
Ketoglutarate (5C)
Succinyl-CoA (4C)
Succinate (4C)
Fumarate (4C)
Oxaloacetate (4)
Where does the Krebs/ citric acid cycle occur
the mitochondrial matrix
Substrate for Krebs/ citric acid cycle
2 acetyl CoA
Krebs/ citric acid cycle forms what products
2 ATP
6 NADH (18 ATP)
2 FADK2 (4 ATP)
4 CO2
