Glycolysis & Gluconeogenesis Pathway

Question 1

Draw the first step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 1

Enzyme: Hexokinase/Glucokinase Enzyme Class: Transferase
Reversibility: Irreversible
*Uses ATP

Question 2

Draw the second step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 2

Enzyme: Glucose-6-Phosphate
Enzyme Class: Isomerase
Reversibility: Reversible

Question 3

Draw the third step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 3

Enzyme: Phosphofructokinase-1
Enzyme Class: Transferase
Reversibility: Irreversible
*Uses ATP
*Is the committed step

Question 4

Draw the fourth step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, or any other important information about this step.

Answer 4

Enzyme: Aldolase
Enzyme Class: Lyase
Reversibility: Reversible

Question 5

Draw the fifth step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 5

Enzyme: Triphosphate Isomerase Enzyme Class: Isomerase
Reversibility: Reversible

Question 6

Draw the sixth step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 6

Enzyme: Glyceraldehyde-3-phosphate dehydrogenase
Enzyme Class: Oxidoreductase
Reversibility: Reversible
*Creates 2NADH

Question 7

Draw the seventh step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 7

Enzyme: Phosphoglycerate kinase
Enzyme Class: Transferase
Reversibility: Reversible
*Creates 2 ATP

Question 8

Draw the eighth step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 8

Enzyme: Phosphoglycerate mutase
Enzyme Class: Isomerase
Reversibility: Reversible

Question 9

Draw the ninth step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 9

Enzyme: Enolase
Enzyme Class: Hydrolase
Reversibility: Reversible

Question 10

Draw the tenth step of glycolysis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 10

Enzyme: Pyruvate Kinase
Enzyme Class: Transferase
Reversibility: Irreversible
*Creates 2ATP

Question 11

What are the irreversible steps of glycolysis?

Answer 11

Steps 1, 3, 10

Question 12

What is the committed step of glycolysis?

Answer 12

Step 3

Question 13

What step of glycolysis requires ATP?NADH

Answer 13

No steps require NADH but steps 1 and 3 require one molecule of ATP each

Question 14

What step of glycolysis makes ATP/NADH

Answer 14

Steps 7 and 10 make 2 ATP each and Step 6 makes 2NADH

Question 15

What does it mean to be most energetic in vivo, and what steps of glycolysis are more energetic in vivo”?

Answer 15

It means it exhibits its highest energy state or activity within a living organism. Steps 1,3, and 10

Question 16

What steps in glycolysis are different in gluconeogenesis?

Answer 16

The irreversible steps 1, 3, and 10

Question 17

Draw the first step of gluconeogenesis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 17

Enzyme: Pyruvate carboxylase
Enzyme: Phosphoenol pyruvate carboxy kinase
Enzyme Class:n/a
Reversibility: Reversible
*Uses 2ATP
*Uses 2 GTP

Question 18

Draw the eighth step of gluconeogenesis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 18

Enzyme: Fructose-1,6-bisphosphate
Enzyme Class:n/a
Reversibility: Reversible

Question 19

Draw the tenth step of gluconeogenesis.
Ensure to note the enzyme used, enzyme class, reversibility, favorability, or any other important information about this step.

Answer 19

Enzyme: Glucose-6-phosphotase
Enzyme Class:n/a
Reversibility: Reversible