Human Bio Unit 1 - Lipids

Question 0

Fatty acid formula

Answer 0

C in the middle

Double bond to a oxygen

Single bond to HO group

Single bond to R carbon chain

Question 1

Formation of a triglyceride

Answer 1

1 molecule of glycerol + 3 molecules of fatty acids -> 1 molecule of triglyceride + water

Question 2

What are the two types of fatty acid and which is which?

Answer 2

Unsaturated - No double bonds in R carbon chain

Saturated - Has some double bonds in R carbon chain

Question 3

Which of the fatty acids is bad for you?

Answer 3

Saturated

Question 4

Phospholipids

Answer 4

Important in cell membrane structure

One of the glycerol hydroxyl group is estrefied by phosphoric acid rather than by a fatty acid

Question 5

Ester link

Answer 5

Caused by a condensation reaction

Is between the carboxyl group of the fatty acid and the hydroxyl group of glycerol

Question 6

What is the reaction that forms triglycerides?

Answer 6

Condensation reaction

Question 7

Simple structure of a phospholipid

Answer 7

(See pictures)

One glycerol

Two non-polar hydrophobic tails

Phosphate, polar hydrophilic head