Unit #1 Review Cards 3

Question 1

What is a lipid, and what functions do lipids perform?

Answer 1

Lipids are the only ones HYDROPHOBIC!!! All lipids hydrophobic!!!

Functions:
Energy storage (more CH bonds = more energy)
Fats have more C-H bonds than carbs
Phospholipids form membranes
Prostaglandins are used for signaling
Isoprenoids (terpenes) are used for vision (absorbing light)

Question 2

What are glycerolipids?

Answer 2

Fats is a polymer of fatty acid and glycerol

Molecule of glycerol bonded to one or two fatty acids

Fatty acids are made up of long chains of C and H

Kink where double or triple bond is

Question 3

Bonds and State @ room temp:

unsaturated fats
saturated fats

Answer 3

unsaturated fats

• liquid
• oils
• double/triple cov. bond

saturated fats

• solid
• butter, crisco, margerine
• single cov. bond

Question 4

Why do fats store more energy than carbohydrates?

Answer 4

Fats have more C-H bonds