3. lipids

Question 1

what are triglicerieds made up of?

Answer 1

1x glycerol
3x fatty acids

Question 2

what bonds form between glycerol and fatty acids?

Answer 2

ester bond

Question 3

synthesis of the ester bond is known as

Answer 3

(condensation reaction) esterification

Question 4

break down of the ester bond is known as

Answer 4

hydrolisis reaction

Question 5

Fatty acids can be —– or ——–

Answer 5

saturaturated or unsaturated

Question 6

Describe the structure of triglycerieds

Answer 6

• theyre macromolecules
• they contain C H O
• they have 3 fatty acid tails made of a hydrocarbon chain and are hydrophobic

Question 7

whats the structure of phospholipids?

Answer 7

same as triglyceried but one fatty acid chain swaped for a hydrophilic phosphate group

Question 8

properties and functions of

triglycerides

Answer 8

Function : enerfy storage molecule in animals and plants (some bacteria use it to storeenergy and carbon)
Properties
1. long hydrocarbon chains contain lots of chemical energy becuase lots is released when theyre broken down x2 as carbs
2. they’re insoluble so don’t cause water to enter cells and sweel
3. can form micelle

Question 9

properties and functions of

phospholipids

Answer 9

function: component of cell membranes, control what enters and leaves the cell
properties:
1. hydrophobic and hydrophilic allow bilayer formation and act as a barrier to prevent water soluble substances through bevcaseu detered from the hydrophobic centre