IB Membranes Notes
Membrane Structure (1.3)
- Explain the phospholipid bilayer and why it forms two layers
- Identify the role and location of the types of membrane proteins:
- Describe where cholesterol is found and what it can be used for
- Identify the functions of membrane membranes:
- Transport (passive & active):
- Identify and explain the evidence from electron microscopy that led to Davson-Danielli model of the membrane
- Identify and explain the evidence that led to the falsification of the Davson-Danielli model and acceptance of the Singer-Nicolson membrane model.
- Draw the fluid mosaic model including the following labels: phospholipids, integral protein, peripheral protein, cholesterol.
Membrane Transport (1.4)
- Explain and draw pictures for the following forms of transport:
- Diffusion (simple diffusion):
- Illustrate and explain the structure and function of sodium-potassium pumps for active transport and potassium channels for facilitated diffusion axons.
- Explain why tissues or organs to be used in medical procedures must be bathed in a solution with the same osmolarity as the cytoplasm to prevent osmosis.