cell membrane structure

Two types of cells and what are they

Prokaryotic cell- cell without a nucleus

Eukaryotic- contains a nucleus

What is a plasma membrane used for

To separate a barrier between extracellular and intracellular fluids

What is in a plasma membrane

Phospholipids, protein, carbohydrates and lipids

What is the role of the lipids in a plasma membrane

To produce strength and structure to counteract for the fluidity of the phospholipids

What is the role of carbohydrates in a plasma membrane

They attach to lipids and proteins

Called glycolipids or glycoproteins

Why are phospholipids water loving and water hating

Have hydrophilic heads that are water loving made up of nitrogen, phosphate and glycerol

Have hydrophobic tails that are water hating made up of fatty acid tails

What forms a phospholipid bilayer?

The phospholipid tails facing inwards and heads outwards

The phospholipid bilayer function

to create a barrier to stop ions and solids getting through its selective

Doesn’t allow different organelles to leak out the cell

Messages signalling chemicals binding to proteins

Plasma membrane tasks

Transport solutes from extra cellular to intercellular layers

For cell to cell recognition where carbohydrates bind to proteins

Receptors- detect changes so receptors bind to proteins

Attachment- to cytoskeleton