Lipids

Question 1

What elements do lipids contain?

Answer 1

Carbon, hydrogen and oxygen atoms

Question 2

Are lipids polar or non-polar?

Answer 2

Non-polar and hydrophobic

Question 3

Different types of lipids

Answer 3

Triglycerides (fats and oils), phospholipids, steroids and waxes

Question 4

Monomers of triglycerides

Answer 4

Glycerol and 3 fatty acids

Question 5

What type of bond forms in triglycerides?

Answer 5

Ester bonds

Question 6

Roles of triglycerides

Answer 6

• Good energy reserve
• Insulation
• buoyancy
• source of metabolic water
• Protecting of vital organs

Question 7

What are phospholipids?

Answer 7

Made from glycerol molecule linked to 2 fatty acids and 1 phosphate group.

Question 8

Are phospholipids polar?

Answer 8

They have a polar phosphate head

Question 9

Function of phospholipids

Answer 9

Building block of cell membranes

Question 10

How many water molecules released during formation of phospholipids and triglycerides

Answer 10

Phospholipids - 2

triglycerides - 3