1. Outline the cell theory. [6]
2. Outline the exceptions to the cell theory. [6]
3. Explain the importance of surface area:volume ratio in cells and how this allowed for
adaptation. [8]
4. Explain the features of the Paramecium that enable it to live. [7]
5. Explain the features of the Chlamydomonas that enable it to live. [7]
6. Explain the features of E. coli that enable it to live. [7]
7. Outline the process of differentiation in cells. [4]
8. Describe emergent properties. [3]
9. Explain how stem cells can be used to cure diseases. [6]
10. Outline the ethical implications behind stem cell research. [3]
11. Define ultrastructure. [1]
12. Outline the differences between the structures of prokaryotic and eukaryotic cells.
[6]
13. Explain why eukaryotic cells are compartmentalized. [4]
14. Explain how the structure and properties of phospholipids help to maintain the
structure of cell membranes. [8]
15. Describe the structure of cell membranes. [8]
16. Describe the various functions of membrane proteins. [8]
17. Describe the structure and function of cholesterol in the cell membrane. [4]
18. Explain the processes of endocytosis, exocytosis, and movement across the cell,
providing examples of its uses for each. [8]
19. Explain the differences between diffusion, facilitated diffusion, osmosis, and active
transport in a cell. [4]
20. Explain how a sodium-potassium pump works. [5]
21. Describe how the endosymbiotic theory explains how eukaryotes came to exist. [4]
22. Describe the evidence that mitochondria and chloroplasts were prokaryotes earlier.
[4]
23. Explain the role of mitosis. [4]
24. Explain the processes of mitosis. [8]
25. Explain the processes of interphase. [4]
26. Describe the stages of the cell cycle. [4]
27. Describe the processes of cytokinesis is plants and animal cells. [4]
Unit 2: Molecular Biology