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1
Q

4 functions of fatty acids

A

Fatyy acids are building blocks of phospholipids and glycolipids

Many proteins are modified by the covalent attachment of fatty acids

Fatty acids are fuel molecules.

Fatty acid derivatives serve as hormones and intracellular messengers

2
Q

fatty acid stereochem

A

usually cis conformation

3
Q

fatty acids we need to know

A

Palmitate - 16 carbons

Stearate - 18 carbons

4
Q

Plant oil

A

55-83% oliec acid

liquid at room temp

5
Q

Animal fats

A

Saturated fatty acids

solid at room temp

6
Q

What does hydrogenation do to fats

A

adds H over the double bond i.e unsaturated to saturated

increases melting point

make spreads and shit

Level of hydrogenation controlled by H2, temp and time

7
Q

What does hydrogenation do to fat stereochemistry

A

converts cis to trans which is more stable

Trans isomers are implicated in disease. bad cholesterol

8
Q

Types of membrane lipids

A

Phospholipids
Glycolipids
Cholesterol

9
Q

Phospholipid structure

A

Fatty acid + glycerol(3C) + phosphate + alcohol

10
Q

Phospholipids derived from glycerol

A

Phosphoglycerides

11
Q

Phospholipid without alcohol

A

Phosphatidate

12
Q

How are glycolipids arranged in membrane

A

asymmetric

sugar side always extracellular

13
Q

Phospholipids not derived from glycerol

A

sphingosine

found in animals