Glycolysis Flashcards
1
Q
Where does glycolysis occur?
A
- In the cytoplasm
- Does not require oxygen
1
Q
Two major phases of glycolysis
A
- Energy investment phase
- Energy payoff phase
2
Q
Energy investment phase
A
Costs 2 ATP molecules
3
Q
Payoff phase
A
Gain 4 ATP molecules
4
Q
NAD+
A
- Oxidized
- Has not picked up energy from glucose
5
Q
NADH + H+
A
- Reduced
- Picked up energy from glucose
6
Q
What is the purpose of NADH + H+ molecules?
A
- Electron carriers
- This can later be used to make ATP
7
Q
FAD
A
- Oxidized
- Has not picked up energy from glucose
8
Q
FADH2
A
- Reduced
- Has picked up energy from glucose
9
Q
What is the beginning reactant in glycolysis?
A
- Glucose
- Has 6 carbons
10
Q
What does isomerization mean?
A
To rearrange atoms
11
Q
What is important to note from the 4th step?
A
- Everything from this point on is 2x
- Glyceraldehyde-3-phosphate and Dihydroxyactetone phosphate are in a state of equilibrium
- Only glyceraldehyde-3-phosphate can be used continuing on in the cycle though
12
Q
Summary of Glycolysis
A
- Begin with glucose which is oxidized into forming 2 pyruvate molecules
- 6 carbons become 2x 3 carbon compounds
- Products go to P.O. + Krebs and ETC (for NADH)
