Plasma Membrane Flashcards
What are the main functions of the cell membrane?
Prevents content from escaping
Selective permeability
Compartmentalisation of individual organelles
Provides support
What is the structure of a lipid bi layer?
Two closely apposed sheets of lipid in which proteins are embedded and some carbohydrates.
Also contain glycoproteins and glycolipids
How are membrane proteins synthesised?
In the rough ER
What are the functions of membrane proteins?
Transport of molecules
Enzymatic activity
Signal transduction
Structural support
What are glycoproteins?
Chains of sugar linked to amino acids
What are the three types of transport across a cell membrane?
Passive transport
Active transport
Vehicle transport
What are the three types of passive transport?
Diffusion
Osmosis
Tonicity
What are the two types of vehicle transport?
Endocytosis
Exocytosis
What are the three types of exocytosis?
Phagocytosis
Pinocytosis
Receptor-mediated endocytosis
