1. HIV budding from a T-cell Homework #1 due 2/7 Bonus #1 due 2/28

2. Four types of molecules that are primarily found in living systems (biomolecules): Carbohydrates/ Sugars Nucleotides- DNA/RNA Amino Acids- Proteins Lipids- fats/phospholipids

3. Information flow in cells Protein CB 5.25

4. CB 5.13 Lipids and Fats- membranes/energy storage Polar/ Hydrophilic head Non-polar/ Hydrophobic tail

5. CB 7.2 Membranes act as barriers separating inside from outside

6. CB 7.7 Membranes have associated proteins

7. CB 5.14 Are membranes solid or fluid?

8. CB 7.6 Testing membrane fluidity

9. CB 7.5 Membrane lipids are in constant motion

10. CB 7.5 Too much movement can lead to leaks Too little movement can lead solidification and leaks

11. CB 7.5 In cold teperatures cells can increase double bonds, unsaturated lipids, increasing disorder In hot temperatures cells can decrease the number of double bonds, saturated lipids, decreasing disorder coldhot

12. CB 5.13 Lipids and Fats- membranes/energy storage Polar/ Hydrophilic head Non-polar/ Hydrophobic tail

13. CB 7.5 In cold conditions cells can increase double bonds, unsaturated lipids, increasing disorder In hot conditions cells can decrease the number of double bonds, saturated lipids, decreasing disorder coldhot

14. CB 6.9 Animal Cell

15. Viruses CB 18.2

16. Viruses are very simple, and come in a variety of shapes/compositions CB 18.4

17. Living organisms must fit all of the following criteria: (modified from Campbell “Biology”) 1. They must have organization. 2. They must have metabolism. 3. They must respond to the environment. 4. They must be able to reproduce themselves.

18. Viruses only harm cells by invading them and using the cell to reproduce

19. Living organisms must fit all of the following criteria: (modified from Campbell “Biology”) 1. They must have organization. 2. They must have metabolism. 3. They must respond to the environment. 4. They must be able to reproduce themselves.

20. basic viral reproductive cycle CB 18.5

21. The Lytic Cycle CB 18.7

22. The Lytic and Lysogenic Cycles CB 18.7 Lytic cycle Lysogenic cycle

23. the relationship between viruses and disease

24. Membrane protein Viruses enter cells via specific membrane proteins; thus viral infections are usually cell specific.

25. an Envelope Virus CB 18.8

26. human immune cell (T-cell) HIV Reproductive Cycle CB 18.10

27. HIV infects the T-cells of the human immune system CB 43.14

28. Stages of HIV infection

29. human immune cell (T-cell) HIV Reproductive Cycle CB 18.10

30. Viruses CB 18.2 Homework #1 due 2/7 Bonus #1 due 2/28

31. Videos about the reproductive cycle of Herpes virus From: http://darwin.bio.uci.edu/~faculty/wagner/index.html