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