glycolysis

Question 1

is glycolysis an aerobic or anaerobic process

Answer 1

anaerobic

Question 2

what is the purpose of glycolysis

Answer 2

produces pyruvate from glucose

Question 3

where does glycolysis happen

Answer 3

cytoplasm of cells

Question 4

what is the net gain of ATP in glycolysis

Answer 4

2 ATP

Question 5

what is the first stage of glycolysis

Answer 5

glucose is phosphorylated by adding 2 phosphates from the hydrolysis of 2 ATP in ADP + Pi

Question 6

what is produced when glucose is phosphorylated

Answer 6

1 molecule of hexose bisphosphate and 2 molecules of ADP

Question 7

what is hexose bisphosphate split up into

Answer 7

2 molecules of triose phosphate (3 carbons)

Question 8

how is pyruvate formed from triose phosphate

Answer 8

triose phosphate is oxidised losing hydrogen to form 2 molecules of pyruvate producing ATP

Question 9

what happens to the hydrogen ions when triose phosphate is oxidised

Answer 9

coenzyme NAD collects them becoming reduced NAD (NADH)

Question 10

why is there a net gain of 2 ATP in glycolysis

Answer 10

4 ATP are produced but 2 are used up at the start

Question 11

what happens to the 2 molecules of NADH produced in glycolysis

Answer 11

go the final stage of aerobic respiration: oxidative phosphorylation

Question 12

what happens to pyruvate when it is produced

Answer 12

actively transported to the matrix of the mitochondria for the link reaction