Exam 2: Glycolysis

Question 1

Step 1: What happens?

Answer 1

Phosphate group is added to glucose, forming G6P

Question 2

Step 1: What facilitates?

Answer 2

Hexokinase

Question 3

Step 2: What happens?

Answer 3

G6P becomes a 5-member ring, forming F6P

Question 4

Step 2: What facilitates?

Answer 4

PGI (phosphoglucose isomerase)

Question 5

Step 3: What happens?

Answer 5

Phosphate is added to F6P, forming F-1,6BP

Question 6

Step 3: What facilitates?

Answer 6

PFK (phosphofructokinase)

Question 7

Step 4: What happens?

Answer 7

F-1,6BP is cleaved, forming DAP and G3P

Question 8

Step 4: What facilitates?

Answer 8

Aldolase

Question 9

Step 5: What happens?

Answer 9

DAP re-arranges to form G3P, now there are 2 G3P molecules

Question 10

Step 5: What facilitates?

Answer 10

triose isomerase phosphate

Question 11

Step 6: What happens?

Answer 11

Phosphate is added to G3P forming 1,3-BPG, NAD+ is reduced to NADH

Question 12

Step 6: What facilitates?

Answer 12

GAPDH (glyceraldehyde-3-phosphate-dehydrogenase), paired with step 7

Question 13

Step 7: What happens?

Answer 13

Phosphate removed from 1,3-BPG to form 3PG, and ATP

Question 14

Step 7: What facilitates?

Answer 14

PGK (phosphoglycerate kinase), paired with step 7

Question 15

Step 8: What happens?

Answer 15

3PG is re-arranged to 2PG

Question 16

Step 8: What facilitates?

Answer 16

PGM (phosphoglycerate mutase)

Question 17

Step 9: What happens?

Answer 17

2PG turns into PEP, forms water too

Question 18

Step 9: What facilitates?

Answer 18

enolase

Question 19

Step 10: What happens?

Answer 19

PEP loses a phosphate, forming ATP and pyruvate

Question 20

Step 10: What facilitates?

Answer 20

pyruvate kinase

Question 21

Where does glycolysis happen?

Answer 21

cytoplasm of the cell

Question 22

What are the end products of glycolysis?

Answer 22

2 ATP, 2 NADH, 2 pyruvate