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Flashcards in Lipids Deck (12)
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1

what are triglycerides?

the combination of one glycerol and 3 fatty acids

2

how do triglycerides form?

the hydroxyl groups interact forming 3 water molecules and ester bonds between glycerol and fatty acids

3

what bonds are formed between glycerol and fatty acids?

ester bonds

4

what does saturated mean?

there are only single bonds between the carbon atoms

5

what does unsaturated mean?

there are double bonds between the carbon atoms creating kinks (bends)

6

why are some lipids liquid at room temperature?

because the double bonds cause kinks so they can't pack close together

7

what reaction forms ester bonds in the joining of glycerol and fatty acids?

esterification

8

what are sterols?

a 4 carbon ring structure with a hydroxyl, such as cholesterol

9

what test identifies lipids?

emulsion test

10

what are phospholipids?

they are a phosphate with 2 fatty acids, they have hydrophobic tails (non-polar) and hydrophilic heads (polar)

11

name 4 roles of lipids

membrane formation, hormone production, thermal insulation, waterproofing

12

when ester bonds are formed in triglycerides, how many water molecules are formed?

3