1. Virus Reading Guide

2. How Active Viruses Multiply
Virus attaches to the surface of a living cell

3. How Active Viruses Multiply
Virus injects genetic material into cell

4. How Active Viruses Multiply
Cell produces viral proteins and genetic material

5. How Active Viruses Multiply
Viruses assemble

6. How Active Viruses Multiply
Cell bursts, releasing viruses

7. How Hidden Viruses Multiply
Virus attaches to the surface of a living cell

8. How Hidden Viruses Multiply
Virus’s genetic material becomes part of the cell’s genetic material.

9. How Hidden Viruses Multiply
Later, virus’s genetic material becomes active.

10. How Hidden Viruses Multiply
Cell produces viral proteins and genetic material; viruses are assembled

11. How Hidden Viruses Multiply
Cell bursts, releasing viruses

12. 1. Why do biologists consider viruses to be nonliving?

13. 1. Why do biologists consider viruses to be nonliving?
Viruses are not cells and do not have the characteristics of organisms.

14. 2. True/ False. Viruses multiply the same way as other organisms.

15. 2. True/ False. Viruses multiply the same way as other organisms.

16. Parasite Host Bacteriophage Particle
3. Which is the name of a living thing that provides energy for a virus or an organism?
Parasite
Host
Bacteriophage
Particle

17. 3. Which is the name of a living thing that provides energy for a virus or an organism?
B. Host

18. 4. Viruses act like ____ because they destroy the cells in which they multiply.

19. 4. Viruses act like ____ because they destroy the cells in which they multiply.
parasites

20. 5. True/ False. Each virus can enter only a few types of cells in a few species.

21. 5. True/ False. Each virus can enter only a few types of cells in a few species.

22. 6. True/ False. All viruses have the same shape.

23. 6. True/ False. All viruses have the same shape.

24. 7. A virus that infects bacteria is called a(n) _______.

25. 7. A virus that infects bacteria is called a(n) _______.
bacteriophage

26. 8. True/ False. Viruses are much smaller than bacteria.

27. 8. True/ False. Viruses are much smaller than bacteria.

28. 9. Circle the letter of each sentence that is true about viruses.
They are larger than cells.
They need to be inside a living cell in order to reproduce.
They contain genetic material.
They are all round in shape.

29. 9. Circle the letter of each sentence that is true about viruses.
b. They need to be inside a living cell in order to reproduce. c. They contain genetic material.

30. 10. Label the two basic parts of a virus in this diagram.

31. 10. Label the two basic parts of a virus in this diagram.
Protein Coat

32. 10. Label the two basic parts of a virus in this diagram.
Genetic material
Protein Coat

33. 11. True/ False. Some viruses are surrounded by an outer membrane envelope.

34. 11. True/ False. Some viruses are surrounded by an outer membrane envelope.

35. 12. What are two functions of a virus’s protein coat?

36. 12. What are two functions of a virus’s protein coat?
It protects the virus.
It allows the virus to attach to certain cells.

37. 13. True/ False. The shape of the proteins allow the virus’s coat to attach to only certain cells in the host.

38. 13. True/ False. The shape of the proteins allow the virus’s coat to attach to only certain cells in the host.
True