unit 2: steps of glycolysis

Question 1

glycolysis step 1 inputs

Answer 1

glucose, ATP

Question 2

glycolysis step 1 outputs

Answer 2

glucose 6-phosphate, ADP

Question 3

glycolysis step 1 facilitative enzyme

Answer 3

kinase

Question 4

glycolysis step 1 function

Answer 4

phosphorylation of glucose (phosphate comes from ATP molecule)

Question 5

glycolysis step 2 inputs

Answer 5

glucose 6-phosphate

Question 6

glycolysis step 2 outputs

Answer 6

fructose 6-phosphate

Question 7

glycolysis step 2 facilitative enzyme

Answer 7

isomerase

Question 8

glycolysis step 2 function

Answer 8

reconfiguring the carbon based molecule to make a new isomer

Question 9

glycolysis step 3 inputs

Answer 9

fructose 6-phosphate, ATP

Question 10

glycolysis step 3 outputs

Answer 10

fructose 1,6-bisphosphate, ADP

Question 11

glycolysis step 3 facilitative enzyme

Answer 11

kinase

Question 12

glycolysis step 3 function

Answer 12

phosphorylation of fructose 6-phosphate (phosphate from ATP molecule); creates a high energy molecule

Question 13

glycolysis step 4 inputs

Answer 13

fructose 1,6-bisphosphate

Question 14

glycolysis step 4 outputs

Answer 14

2 new molecules: glyceraldehyde 3-phosphate

Question 15

glycolysis step 4 facilitative enzyme

Answer 15

aldolase

Question 16

glycolysis step 4 function

Answer 16

breaking of the high energy molecule (fructose 1,6-bisphosphate) into 2 new G3P molecules

Question 17

glycolysis step 5 inputs

Answer 17

dihydroxyacetone phosphate (DHAP)

Question 18

glycolysis step 5 outputs

Answer 18

glyceraldehyde 3-phosphate (G3P)

Question 19

glycolysis step 5 facilitative enzyme

Answer 19

isomerase

Question 20

glycolysis step 5 function

Answer 20

converts DHAP into G3P, creating the 2nd G3P molecule

Question 21

steps 1-5 of glycolysis are considered the _____ phase

Answer 21

the energy investment phase

Question 22

how many ATP are used in steps 1-5 of glycolysis?

Answer 22

2

Question 23

glycolysis steps 6-10 are considered the _______ phase

Answer 23

the energy payoff phase

Question 24

how many ATP are made in steps 6-10 of glycolysis?

Answer 24

4 (net 2 after considering the energy investment phase)

Question 25

how many new ATP are created after glycolysis?

Answer 25

4 (net 2 after considering the energy investment phase)

Question 26

glycolysis step 6 inputs

Answer 26

glyceraldehyde 3-phosphate; NAD+ (2x per 1 glucose molecule)

Question 27

glycolysis step 6 outputs

Answer 27

1,3-bisphosphoglycerate; NADH (2x per 1 glucose molecule)

Question 28

glycolysis step 6 facilitative enzyme(s)

Answer 28

kinase and dehydrogenase

Question 29

glycolysis step 6 function

Answer 29

phosphorylation and dehydrogenation of G3P; NAD+ is reduced to NADH

Question 30

glycolysis step 7 inputs

Answer 30

1,3-bisphosphoglycerate; ADP (2x per 1 glucose molecule)

Question 31

glycolysis step 7 outputs

Answer 31

3-phosphoglycerate, ATP (2x per 1 glucose molecule)

Question 32

glycolysis step 7 facilitative enzyme

Answer 32

kinase

Question 33

glycolysis step 7 function

Answer 33

phosphorylation of ADP (phosphate comes from 1,3-BPG); this creates 2 ATP per 1 glucose molecule to offset the ATP used in steps 1-5

Question 34

glycolysis step 8 inputs

Answer 34

3-phosphoglycerate (2x per 1 glucose molecule)

Question 35

glycolysis step 8 outputs

Answer 35

2-phosphoglycerate (2x per 1 glucose molecule)

Question 36

glycolysis step 8 facilitative enzyme

Answer 36

isomerase

Question 37

glycolysis step 8 function

Answer 37

move phosphate to a more reactive position on the molecule (creating another isomer)

Question 38

glycolysis step 9 inputs

Answer 38

2-phosphoglycerate (2x per 1 glucose molecule)

Question 39

glycolysis step 9 outputs

Answer 39

phosphoenol-pyruvate (PEP; H2O (2x per 1 glucose molecule)

Question 40

glycolysis step 9 facilitative enzyme

Answer 40

enolase

Question 41

glycolysis step 9 function

Answer 41

removed H2O from each 2-phosphoglycerate molecule to create even less stable PEP molecules

Question 42

glycolysis step 10 inputs

Answer 42

phosphoenol-pyruvate (2x per 1 glucose molecule)

Question 43

glycolysis step 10 outputs

Answer 43

pyruvate; ATP (2x per 1 glucose molecule)

Question 44

glycolysis step 10 facilitative enzyme

Answer 44

kinase

Question 45

glycolysis step 10 function

Answer 45

phosphorylation of ATP molecules; form the final 2 pyruvate molecules from every 1 starting glucose molecule

Question 46

glycolysis overall reactants and products

Answer 46

C6H12O6 (glucose) + 2 ATP + 2 NAD+ -> 2 pyruvate + 4 ATP + 2 NADH

Question 47

glycolysis overall rxt to prod: steps 1-5

Answer 47

1 glucose molecule (6C) + 2 ATP -> 2 G3P molecules (2x 3C) + 2 ADP

Question 48

glycolysis overall rxt to prod: steps 6-10

Answer 48

2 G3P molecules + 2 NAD+ + 4 ADP -> 2 pyruvate molecules + 2 NADH + 4 ATP + 2 H2O