Study Guide 1 (pt 3)

Question 1

Why are the lipids grouped alongside the polymeric macromolecules, even though they are not polymers nor macromolecules? State the trait that unites the lipids.

Answer 1

they are hydrophobic due to their structure

Question 2

State the three main types of lipids

Answer 2

fats, phospholipids, steroids

Question 3

Which part of fatty acids are hydrophobic

Answer 3

the fatty acid tails

Question 4

The ester linkage forms between which two functional groups

Answer 4

hydroxyl and carboxyl

Question 5

How many water molecules are generated as a result of the ester linkages in a triglyceride?

Answer 5

3

Question 6

State the main function of the fats in plants and in animals.

Answer 6

storage

Question 7

Determine three differences between a triacylglycerol and a phospholipid.

Answer 7

triglycerol has three fatty acids and phospholipids have two fatty acids

Question 8

Describe the structure of steroids

Answer 8

carbon skeleton with 4 fused rings

Question 9

State two functions of cholesterol in animals

Answer 9

growth and regulation