T3 L15

Question 1

Functions of lipids (4)

Answer 1

• fuel storage
• energy generation
• cell membrane components
• metabolism

Question 2

Triacylglycerols:

• what type of lipids are they?
• components?
• neutral or polar?

Answer 2

• storage
• glycerol & 3 FAs
• neutral

Question 3

Three types of lipids

Answer 3

• sterols
• membrane lipids
• storage lipids

Question 4

Metabolic energy is stored in what major form?

Answer 4

Triacylglycerols

Question 5

Differentiate between saturated and unsaturated FAs

Answer 5

Unsaturated: has C=C bonds
Saturated: only C-C bonds

Question 6

Describe oxidation of triglycerides.

Answer 6

1. Glycerol removed –> β-oxidation of FAs to acetyl-CoA
2. Acetyl-CoA oxidised to CO2 in citric cycle
3. e-‘s from #2