glycolysis Flashcards
what has glycolysis got to do with carbohydrate metabolism?
It is the central pathway for carbohydrate metabolism as all sugars can be converted to glucose.
Is glycolysis an anaerobic or araeobic process?
An anaerobic process.
what organisms use glycolysis?
Mammals, bacteria and plants.
Where does glycolysis occur?
The cytosol in mammalian cells
Explain what happens briefly during glycolysis.
Glucose (C6) is broken down into 2 molecules of pyruvate (C3) and results in a net production if 2 ATP molecules.
How many reactions take place in glycolysis?
Ten
Explain phase 1 of glycolysis briefly.
Converts glucose to 2 glyceraldehyde 3-phosphate molecules. It is the energy requiring phase, catabolic.
Explain phase 2 of glycolysis briefly.
2 pyruvate molecules are generated. It is the energy yielding phase, anabolic
Products of glycolysis.
4 ATP, 2 pyruvate, 2 NADH, 2 H2O
What is the first irreversible reaction called & explain it.
It is called hexokinase. Glucose is phosphorylated to glucose-6-phosphate.
What is the name of the second irreversible reaction and third reaction overall. Explain it.
Phosphofructokinase. Fructose-6-phosphate is phosphorylated to generate fructose-1, 6-bisphosphate.
what reaction is an isoenzyme and allosteric?
Phosphofructokinase.
What does allosteric mean?
Enzymes that have an additional binding site for effector molecules other than the active site.
What is the name of the third irreversible reaction and final reaction overall? Explain it.
Pyruvate kinase. Phosphenolpyruvate to pyruvate.
What is substrate level phosphorylation?
It is when a phosphate group is transferred to ADP.
