Lipids Flashcards
1
Q
Give two reasons why triglycerides are used as energy storage molecules
A
Because they contain lots of chemical energy and they’re insoluble in water.
2
Q
Explain why the structure of phospholipids makes them able to form the bilayer of cell membranes
A
Phospholipid heads are hydrophilic and their tails are hydrophobic, so they form a double layer with their heads facing out towards the water on either side.
This makes the centre of the membrane bilayer hydrophobic, so water-soluble substances can’t easily pass through it.
