Lipids

Question 1

what processes form ester bonds

Answer 1

Synthesis of triglycerides and polypeptide

Question 2

What is the structure of a phospholipid

Answer 2

• Hydrophilic head
• hydrophobic tail

Question 3

What is the difference between a saturated and unsaturated fatty acid

Answer 3

• Saturated fatty acids don’t have double bonds between carbon atoms because its saturated with hydrogen
• unsaturated fatty acids have at least one double bond between carbon atoms

Question 4

In what kind of reaction is an ester bond formed

Answer 4

Condensation

Question 5

What is the general formula of a saturated fatty acid

Answer 5

CnH(2n+1)COOH

Question 6

Explain how the structure of phospholipids allows them to form the bilayer of a plasma membrane

Answer 6

• Hydrophobic tails repelled by water
• Hydrophyllic head forms H bonds with water
• In an aqueous solution phospholipids arrange themselves so their hydrophobic tails face each other

Question 7

What are fatty acids made up of

Answer 7

A hydrocarbon chain attached to a carboxyl group

Question 8

What is the abbreviation for a fatty acid

Answer 8

RCOOH
- R stands for the residual group/ hydrocarbon chain
- COOH stands for the carboxyl group

Question 9

What makes up a triglyceride

Answer 9

3 molecules of fatty acids and 1 molecule of glycerol

Question 10

Where does cholesterol bind to

Answer 10

Phospholipid fatty acid tails