Transport and Cell membranes Flashcards
What are cell membranes made of?
Phospholipids, proteins, cholesterol, glycoproteins and glycolipids
What structure is the cell membrane?
Phospholipid bilayer
What is the phospholipid function?
Allow lipid soluble substance to enter and leave
Prevent water soluble substance entering and leaving
Make membrane flexible and self sealing
Why is the cell membrane called the fluid mosaic model
Fluid- phospholipids can move freely
Mosaic - made of different molecules
Glycolipid function in cell membrane
Act as recognition sites
Tissue formation
Maintain stability
Glycoproteins
Act as recognition sites
Tissue formation
Allow cells to recognise one another such as lymphocytes
Cholesterol
Increase rigidity
Reduce fluidity as high temp
Prevent water and ions leaking from cell
