glycolysis EPK Flashcards
1
Q
- What is glycolysis?
A
The splitting of 6-carbon glucose into 3-carbon pyruvate
2
Q
- Why does glucose need to be phosphorylated (Pi added) before glycolysis can occur?
A
The glucose becomes more reactive and splits into two 3-carbon molecules called triose phosphate.
3
Q
- How many molecules of ATP are required to phosphorylate glucose?
A
2
4
Q
- What is the reaction which changes ATP to ADP and Pi called?
A
hydrolysis
5
Q
- What is phosphorylated glucose split into?
A
Triose phosphate
6
Q
- How does oxidation of triose phosphate occur?
A
By removing hydrogen
7
Q
- What is NAD?
A
A coenzyme that carries hydrogen atoms to the oxidative Phosphorylation stage of aerobic respiration.
8
Q
- Why does NAD become reduced?
A
Because it gains a hydrogen to form NADH.
9
Q
- How many molecules of ATP are produced when triose phosphate is converted to pyruvate?
A
2 (this happens twice though so there are four in total)
10
Q
- What is the net gain of ATP, reduced NAD and pyruvate molecules?
A
2 ATP because 4 were made but 2 were used at the start of the process, 2 NADH and 2 pyruvate.
11
Q
- Where does glycolysis occur?
A
Cytoplasm
12
Q
- What are coenzymes? Give an example.
A
Molecules that are needed for enzymes to function. They transfer chemical groups such as hydrogen atoms or acetate. Examples are NAD, FAD and coenzymeA.
