Lesson 4- Lipids (FA)

Question 1

Function

Answer 1

Long-term energy storage, insulation, protection of internal organs, chemical signals, and cellular membranes

Question 2

Structure

Answer 2

Hydrocarbon chain, some may contain hydroxyl, carbonyl and carboxyl groups. they are hydrophobic and non-polar.

Question 3

Triglycerol

Answer 3

Glycerol backbone and three fatty acid chains. They undergo condensation reactions and form through an ester linkage.

Question 4

Glycerol

Answer 4

three-carbon chain with three hydroxyl groups can bond with three fatty acid chains.

Question 5

Fatty acids

Answer 5

hydrocarbon chains can be long short, saturated or unsaturated. each one has a carboxyl group

Question 6

Saturated fat

Answer 6

no double bonds, straight, solid at room temperature, stays liquid in warm blooded animals (butter, lard)

Question 7

Unsaturated fat

Answer 7

one or more double c bond, crooked, liquid at room temperature (oils, nuts)

Question 8

Types of triglycerides

Answer 8

the length and number of bonds will determine specific properties of the fat- omega fats, cis, trans, coconut oil

Question 9

Phospholipids

Answer 9

Glycerol backbone, phosphate group, nitrogen group, and two fatty acid chains, the head is hydrohpillic, the tail is hydrophobic (cell membrane is composed of phospholipid bilayer)