The Fluid Mosaic Model Flashcards
1
Q
What are membranes needed for
A
- to control entry and exits of substances
- contain cell contents and organelles; compartmentalise individual cell processes
- communicate with external environment
- site of chemical reactions
- change shape
- transport and packaging within cell
2
Q
What is the membrane made of
A
Phospholipids
3
Q
What is a phospholipid made from
A
Glycerol, phosphate group and two fatty acid chains
4
Q
Is the hair or the tail hydrophilic
A
The head
5
Q
Is the head or the tail hydrophobic
A
The tail
6
Q
What happens to the membrane when placed in water
A
The hydrophilic heads rest on the top of the water
7
Q
What happens when a membrane is shaken in water
A
It curls around so the tails are on the inside and the heads on the outside to create micelle
8
Q
Why is it called the fluid mosaic model
A
Because phospholipid next to each other are able to swap with each other
