Lipids

Question 1

What is a Lipid?

Answer 1

1. Hydrophobic
2. Contains H,C,O
3. Makes up fatty acids and their derivatives

Question 2

Lipids contain how much more energy than Carbohydrates and Proteins?

Answer 2

They contains

1. 2.25x more per gram than Carbohydrates and Proteins
2. More C–C leads to greater energy available when broken

Question 3

What are the type of Lipids and which ones are important?

Answer 3

1. Simple
   2.Derived
   3.Compouds
   4.Sterols
   Simple and Derived are the most important of the Lipids

Question 4

What are Simple Lipids?

Answer 4

1. Simple lipids are fatty acids with alcohol groups

Question 5

What are Compound Lipids?

Answer 5

1. Fatty acid with alcohol + a functional group
2. Phosphoric acid and N-Phospholipids
3. CHO (carbohydrate) -> Glycolipids
4. Protein- Lipoprotein (helps to transport fat in the bloodstream)

Question 6

What are Derived Lipids?

Answer 6

1. They are products of hydrolysis

2. Invidiual fatty acids, glycerol, and other alcoholic compounds

Question 7

What are Sterol Lipids?

Answer 7

1. Compounds containing a phenanthrene ring

2, i.e. cholesterol

Question 8

What are special lipids needed for the brain?

Answer 8

1. Sphingnolipids

2. Cerebrosides

Question 9

What are Lecithins?

Answer 9

1. Used for digestion of fat (hydrophobic)

2. Has same components as fats

Question 10

What are the Volatile Fatty Acid (VFA’s) names and how many carbon do they contain.

Answer 10

Acetic acid (2 carbon)
Propionic Acid ( 3 carbon)
Butyric Acid ( 4 carbon)

Question 11

What would be the difference between lipids and fats?

Answer 11

Not all lipids are fats, but all fats are lipids.
Fat being a general term.
Lipids being a technical term.

Question 12

What do Lipids not contain?

Answer 12

They do not contain glycerol (ex. steroids)