2.3 - Glycolysis

Question 1

What are the 2 phases of glycoysis?

Answer 1

Energy investment & Energy yeilding phase

Question 2

Describe the steps of glycolysis

Answer 2

1) glucose is phosphoralated (phosphate is added), and one ATP is added (becoming ADP)
2) That glucose is rearranged into a fructose isomer
3) one ATP is added, giving fructose another phosphate (phosphoralated) which makes the molecule symetrical
4) That fructose is split into two 3C molecules: DHAP and G3P
5) DHAP is converted/rearranged into G3P
6) G3P is oxidized (loses e-) and NADH is created from NAD+. A random floating phosphate is also added to the molecule [x2]
7) Phosphate is removed from the carbon chain and added to ADP to make ATP [x2]
8) Phosphate on carbon chain is moved from 3rd carbon to 2nd carbon [x2]
9) water is removed which forms a double bond between C=O [x2]
10) Pyruvate is made with the help of an enzyme called pyruvate kinase. Phosphate is transfered to make one ATP [x2]

Question 3

What does DHAP stand for?

Answer 3

Dihydroxyacetone phosphate

Question 4

What does G3P refer too?

aka PGAL

Answer 4

Glycerahdeyde-3-phosphate

Question 5

How many ATP is put in and how many are made after glycolysis?

Answer 5

2 ATP invested, 4 ATP made
net: 2ATP

Question 6

How many NADH are made after glycolysis?

Answer 6

2 NADH are made