دفتر الطب

13. Where is most ATP from oxidative phosphorylation generated?

12. What is transcytosis?

11. An internalized receptor returns from an early endosome to the cell surface. This is:

10. Where do newly endocytosed vesicles commonly deliver their cargo first?

9. Why do antibody-secreting plasma cells have abundant rough ER?

8. What causes the basophilic appearance of abundant rough ER?

7. The lumen of the endoplasmic reticulum is continuous with what structure?

6. How does an ion channel permit facilitated diffusion?

5. What distinguishes facilitated diffusion from primary active transport?

4. Which substance can readily cross a lipid bilayer by simple diffusion?

3. What explains the trilaminar appearance of the plasma membrane on electron microscopy?

2. What is the cytosol?

1. Which is a nonmembranous organelle?