Biology (Lipids)

Question 1

What are lipids made up of?

Answer 1

Carbon, Hydrogen and Oxygen atoms

Question 2

What is the H:O ratio of a lipid?

Answer 2

Greater than 2:1

Question 3

What are the properties of lipids?

Answer 3

Insoluble in water
Soluble in organic solvents

Question 4

Name 2 types of lipids.

Answer 4

Triglyceride,
Phospholipid

Question 5

How is a tryglyceride formed?

Answer 5

It is formed from 1 glycerol and 3 fatty acids via condensation.

Question 6

Triglyceride is the most common________.

Answer 6

Lipid

Question 7

Tryglyceride can be classified into ____ and _____.

Answer 7

fats
oils

Question 8

What are the functions of lipids?

Answer 8

=Energy reserves
Lipids store in adipose tissues under the skin as subcutaneous fats
Or around the internal organs
It can store 2 the amount of energy than carbs

=Shock absorber
Fat stored in adipose tissues around the internal organs protects the internal organs

=Heat insulator
Subcutaneous fat reduces heat loss from the body

=Involved in the absorption, transport and storage of lipid-soluble vitamins (A,D)

=Produce some hormones (especially sex hormones)

=Component of cell membranes

Question 9

Phospholipids are an important________ of cell membrane.

Answer 9

Component

Question 10

Triglycerides are broken down by?

Answer 10

Hydrolysis