Overview of Metabolism

Question 1

Describe protein as a fuel and energy store

Answer 1

• Transported as aminoacid

- Polymer

Question 2

Describe carbohydrate as a fuel and energy store

Answer 2

• Stored as glycogen in liver and muscle
• Hydrated polymer
• Mobilised as glucose

Question 3

Describe fat as a fuel and energy store

Answer 3

• Triacylglycerol
• Transported as chylomicrons
• Stored in adipose tissues
• Insoluble droplets
• Mobilised as free fatty acids (bound to albumin) and ketone bodies

Question 4

What happens following a meal?

Answer 4

-Insulin increase
-Insulin to glucagon ratio increases
-Insulin
=Activates triacylglycerol synthesis because activates acetyl-CoA carboxylase and inhibits triacylglycerol lipase
=promotes glycogen synthesis by activating glycogen synthase and inhibits glycogen phosphorylase