Unit 8.1 Digestion (Lipids)

Question 1

What are two characteristics of lipids?

Answer 1

store 2x the amount of energy than carbs

non-polar (insoluble in water)

Question 2

What are lipids made of?

Answer 2

glycerol

3 fatty acids

Question 3

What vitamins do lipids carry?

Answer 3

A, D, E, K

Question 4

What are two functions of lipids?

Answer 4

Cushioning organs

Making hormones

Question 5

What do lipids do in the cell membrane?

Answer 5

act as a phospholipid bilayer (provides structure)

Question 6

What are the four types of lipids?

Answer 6

Triglycerides (fat)
Waxes
Phospholipids
Steriods

Question 7

What are triglycerides and what are the two types?

Answer 7

triglycerides are fat (lipid)

there’s unsaturated and saturated

Question 8

What is the difference between saturated and UNsaturated?

Answer 8

saturated = solid @ room temp (animal fats, unhealthy for heart)
unsaturated = liquid @ room temp  (plant oils)

Question 9

Waxes act as a…

Answer 9

waterproof coating (for plant leaves, bird feathers, etc)

Question 10

What are steroids made of and what are the two types?

Answer 10

made of cholesterol
HDL
LDL

Question 11

What is the difference between HDL & LDL?

Answer 11

HDL = removes bad cholesterol, protects against heart attack/stroke
LDL = blocks arteries, can cause heart attack/stroke

Question 12

What are liposomes and why are they used?

Answer 12

Synthetic membranes used to safely deliver drugs, they are used because they reduce unwanted side effects