Lipids

Question 1

Fatty acid molecular formula

Answer 1

RCOOH

Question 2

Carboxylic acid group molecular formula

Answer 2

COOH

Question 3

R group, what is it made up of in lipids?

Answer 3

Hydrocarbon chain

Question 4

saturated vs unsaturated

Answer 4

Saturated - single bonds
unsaturated - at least one multiple carbon to carbon double bond.

Question 5

Triglyceride and phospholipid, what are they made of?

Answer 5

Triglyceride - 1 glycerol 3 fatty acids
Phospholipid - 1 glycerol 2 fatty acids 1 phosphate group

Question 6

Unsaturated fatty acid. what is it ? 3 marks

Answer 6

Long hydrocarbon chains
with carboxylic acid group on the end.
contains at least one carbon - carbon double bond

Question 7

Test for lipids

Answer 7

Ethonal + water
milky emulsion

Question 8

Saturated fats vs unsaturated fats in the food industry

Answer 8

Saturated:
Cheap
Solid at room temp - easier to handle
Risk of heart disease
Unsaturated:
Liquid at room temp - dificult ot handle
better for general health
less readily available.