Functions of the membrane
Protects and contains the contents of the cell
What is barrier?
Make up the entirety of the membrane
What is phospholipids?
Na+ pump actively moves Na+ out of and K+ into the cell
What is transporters?
Bind to specific molecules and because conformational changes
What is carrier proteins?
Controls import and export of molecules
What is selective permeability?
Allows for hydrophilic head and hydrophobic tail
What is amphipathic molecule?
K+ leaves the cell influencing cell excitability
What is ion channels?
Large enough spaces for proteins to pass through
What is nuclear pores?
Allows for cell growth and motility
What is membrane flexibility?
Align in a paired fashion
What is bilayer?
Binds to extracellular molecules to generate intracellular signals
What is receptors?
Span the width of the membrane to allow passage of small molecules
What is transmembrane proteins?
Receptor proteins within the membrane aid in
What is cell communication?
Altered by tail length
What is membrane fluidity?
Integrins link intracellular actin filaments to extracellular matrix protein
What is anchors?
Engulf the proteins and are made in the ER and Golgi apparatus
What is vesicles?
Membrane marker proteins aid in
What is cell recognition?
Greatly stiffens membrane in animals
What is cholesterol?
Extracellular signals trigger catalysis on intracellular molecules
What is enzymes?
Loosely attached to the membrane and can help in signaling
What is peripheral membrane proteins (PMPs)?