1. Understanding Viruses
Part 1
Viewing Guide
Name______________________________________
Answer the questions as you follow along on the movie. The questions are in order.
1. How old could a virus be?
2. How can a virus grow and reproduce?
3. Name 2 diseases caused by a virus.
4. How can you see a virus?
5. How is a virus like a parasite?
6. How does a bacteriophage attack a bacteria?
7. When did the influenza pandemic occur?
8. How many people were killed in the influenza pandemic?
9. How was the 1st vaccine developed?

2. 10. What are antibodies?
11. What are memory cells?
12. How do viruses get around the immune system?
13. Why are RNA viruses harder to treat than DNA viruses?
14. Who developed the polio vaccine?
Understanding Viruses Part 2
15. How can rotavirus be controlled?
16. When did smallpox become extinct?
17. What is a contributing factor to the spread of viruses?

3. 18. Why are researchers catching mosquitoes in the rainforest?
19. How many strains have been isolated from the mosquitoes that were previously
unknown?
20. What is the Hantan virus caused by?
21. Where do we think HIV came from?
22. Why is HIV difficult to find and treat?
23. How are we using viruses to help people?