Daily questions from session 1

1. Describe the structure of the cell membrane and how it relates to the intra-and extracellular fluid.

   • 1.1. Canvas solutions
   • 1.1. Webers solution

2. What is the endoplasmic reticulum? What is the difference in roles of the smooth and rough endoplasmic reticulum, and what makes the rough endoplasmic reticulum rough?

   • 1.2. Canvas solutions
   • 1.2. Webers solution

3. Using your knowledge of the nature of phospholipids, explain what you think would happen if phospholipids are mixed with water. If you are having trouble visualising this, think about what happens when oil is added to water. Can you suggest a physiological process where this might be important?

   • 1.3. Canvas solutions
   • 1.3. Webers solution

4. What are the roles of channels in cell membranes? What different types of channels exist and why are the different types important?

   • 1.4. Canvas solutions
   • 1.4. Webers solution

5. Channelopathies are rare genetic or acquired diseases that affect the cell membrane channels. In broad terms, what effects do you think channelopathies have (i.e. what symptoms would they produce)?

   • 1.5. Canvas solutions

6. What is the difference between diffusion and active transport?

   • 1.6. Canvas solutions

7. How does the role of cell membrane carriers differ from that of channels?

   • 1.7. Canvas solutions

8. What is the role of organelles in the cell?

   • 1.8. Canvas solutions

9. For each of the following organelles give a brief description of their function.

   • nucleus
   • nucleolus
   • golgi apparatus
   • endoplasmic reticulum
   • mitochondrion
   • 1.9. Canvas solutions