2.3 Lipids

Question 1

Common lipids

Answer 1

Fats and oils, steroids, and phospholipids

Question 2

Role of condensation and hydrolysis

Answer 2

Condensation occurs between 3 hydroxyl group of glycerol and carboxyl groups of 3 fatty acids

Hydrolysis breaks down molecules into subunits when exposed to water

Question 3

Functions of lipids

Answer 3

Structure

Hormonal signaling

Insulation

Protection

Store energy

Question 4

Structural function of proteins

Answer 4

Phospholipid bilayer is main component of cell membrane

Question 5

Function of Hormonal Signaling

Answer 5

Steroids are involved in hormonal signaling

Question 6

Example of steroids

Answer 6

Estrogen

Progesterone

Testosterone

Question 7

Function of Insulation

Answer 7

Fat in animals can serve as insulators

Question 8

Protection function

Answer 8

Triglycerides form tissue layer around organs to provide protection against injury

Question 9

Storage function

Answer 9

Triglycerides can be used as long term energy storage source