Lecture 14 Energy Balance and Metabolism I

Question 1

What is the function of phosphorylase and what stimulate phosphorylase activity?

L14 S10

Answer 1

Phosphorylase breaks down glycogen into glucose-1-phosphate.

Stimulated by epinephrine (adrenal medulla) and glucagon (alpha cells of pancreas).

Question 2

What is the net chemical equation for glycolysis?

L14 S11

Answer 2

Reactants:

• glucose (6 carbons)
• 2 ADP
• 2 phosphates

Products:

• 2 pyruvic acid (3 carbons)
• 2 ATP
• 4 H

Question 3

What are the products of conversion of pyruvic acid to Acetyl-CoA?

L14 Sz

Answer 3

• 2 acetyl-CoA
• 4 H
• 2 CO2

Question 4

Where do the hydrogens from the penthouse phosphate pathway go to?

L14 S17

Answer 4

NADPH