Lecture 9

Question 1

What are the 4 types of lipids?

Answer 1

1- Fats
2- Phospholipds
3- Steroids
4- Waxes

Question 2

What is a Triglyceride?

Answer 2

FAT
Large lipid made up of 2 smaller molecules (1 glycerol and 3 fatty acids)
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Question 3

What bond joins the molecules in triglycerides?

Answer 3

ester-linkage

Question 4

Unsaturated fatty acids

Answer 4

Strand goes wonk to the side - contains one or mode double bonds
ex: olive oils + corn oil

Question 5

Saturated fatty acids

Answer 5

Fully saturated max number of hydrogens on the strand
ex: most animal fats

Question 6

Two types of unsaturated fatty acids =

Answer 6

Monounsaturated (one wonk)
Polyunsaturated (many wonkwonkwonk)

Question 7

Good cholesterol

Answer 7

HDL

Question 8

Bad cholesterol

Answer 8

LDL (cardiovascular disease, sticks to walls of arteries and clogs)

Question 9

What are phospholipids?

Answer 9

1 glycerol with a negatively charged phosphate group attached to 2 fatty acids
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Question 10

When the phospholipids cluster into a bilayer they become…

Answer 10

amphipathic (hydrophilic heads with hydrophobic tails in the center of the bilayer)

Question 11

What are steroids?

Answer 11

Lipids with 4 fused ring carbon skeleton
ex: cholesterol, testosterone, cortisol

Question 12

KNOW HOW TO LABEL THE WINTER WONDERLAND SCENE slide 25 lecture 9

Answer 12

KNOW HOW TO LABEL THE WINTER WONDERLAND SCENE slide 25 lecture 9

Question 13

What are waxes?

Answer 13

Long fatty acid tails bonded with long chain alcohols or carbon rings