Cell Metabolism 1

Question 1

Which enzyme catalyses this reaction?

Answer 1

hexokinase

Question 2

What is the net gain of ATP in glycolysis?

Answer 2

2

Question 3

phospho-glucose isomerase catalyses which reactIon?

Answer 3

Isomerisation

Glucose-6-phosphate to fructose-6-phosphate

Question 4

fructose-6-phosphate undergoes a group transfer reaction, forming which molecules? Which enzyme catalysts it?

Answer 4

ATP + H⁺

fructose-1,6-bisphosphate

phosphofructokinase

Question 5

fructose-1,6-bisphosphate is split into two by which enzyme, producing which two molecules?

Answer 5

aldolase

glyceraldehyde-3-phosphate

dihydroxyacetone phosphate

Question 6

glyceraldehyde-3-phosphate

dihydroxyacetone phosphate

which of these two molecules undergoes an isomerisation reaction to form the other?

which enzyme catalyses it?

Answer 6

dihydroxyacetone phosphate

catalysed by triose phosphate isomerase (TPI)

Question 7

glyceraldehyde-3-phosphate undergoes a group transfer reaction, which molecules are used and formed?

Answer 7

Question 8

How many NADH produced in glycolysis of 1 glucose molecule?

Answer 8

2

Question 9

2 ATP are formed from 2 molecules of 1,3-biphosphoglycerate. Which other molecule is formed and which enzyme catalysts this reaction?

Answer 9

2 lots of 3-phosphoglycerate

phosphoglycerate kinase

Question 10

3-phosphoglycerate is isomerised to produce which molecule?

Which enzyme catalyses this reaction?

Answer 10

2-phosphoglycerate

phosphoglycerate mutase

Question 11

2-phosphoglycerate undergoes which kind of reaction under the presence of which enzyme, to form phosphoenolpyruvate

Answer 11

dehydration

enolase

Question 12

phosphoenolpyruvate undergoes a group transfer reaction, forming which molecules?

Which enzyme?

Answer 12

pyruvate and ATP

pyruvate kinase