Virus Worksheet


 Viruses Worksheet  

Structure of Viruses

1. Are viruses living or nonliving?

2. How can viruses be useful?


3. What odes a virologist do for a living?


4. Construct a Venn diagram comparing viruses and cells.








5. Explain how viruses were discovered and by whom.



6. Compare the size of viruses, bacteria, and eukaryotic cells.



7. What must be true for viruses to be able to replicate?


8. Name the two main parts of all viruses.


9. Discuss the hereditary material of viruses.



10. Compare & contrast capsids and envelopes of viruses.



11. Name 2 enveloped viruses that cause sexually transmitted disease.

12. What type of virus causes flu?

13. Where are glycoproteins found & what is there purpose?


14. What characteristics are used to group viruses?


15. How are these viruses grouped — retrovirus, adenovirus, and herpes virus?



16. Compare & contrast helical & icosahedral viral shapes & diseases.



17. Explain how RNA viruses replicate.



18. Do viruses contain enzymes? Explain.


19. Compare 7 contrast viroids & prions by constructing a Venn diagram.







Viral Replication

20. Why are viruses considered to be obligate intracellular parasites?


21. What is the best known bacteriophage, and what virus does it attack?


22. Sketch & label a bacteriophage and tell the function of each labeled part.






23. Name the steps of the lytic cycle & tell what happens to the host cell & virus at each stage.






24. What are temperate phages and how do they affect a cell?



25. Name the steps of the lysogenic cycle & tell what happens to the host cell & virus at each stage.





26. How does a prophage form?


27.Name a sexually transmitted virus that uses the lysogenic cycle to attack host cells.

28. Why is the influenza virus so hard to combat?


Viruses & Human Disease

29. Name some of the most common viral disease that attack humans.


30. How are shingles & chickenpox alike? How are they different?


31.What two methods are used to control viral diseases?


32. What is the CDC and what is its job?


33.What eradication program did the World Health Organization undertake in 1967, and what were the results?


34. What virus do we vaccinate our pets against each year?

35. How does AZT work?


36. What drugs prevent viruses from making capsids?

37. Why is rain forest clearing dangerous to humans?


38. Some lysogenic viruses can trigger certain types of _________________.