NAME___________________________________DATE___________PERIOD____
HONORS UNIT 6 –VIRUSES AND BACTERIA QUEST- QUESTIONS
VIRUSES- SIZE, SHAPE, AND STRUCTURE- pages 40-43
1. What is the definition of a virus?
2. Why do biologists consider viruses to be nonliving?
3. Where is the only place that viruses can multiply?
4. What is a host?
5. What is the definition of a parasite?
6. What is a bacteriophage?
7. What is the range of the smallest to the largest virus diameter? How many
nanometers are in one meter?
8. How do viruses compare in size to bacteria?
9. What are the four ways that scientists name viruses?
10. What are the two basic parts of a virus? Use Figure 3 to draw a diagram of a
virus.
11. How do surface proteins on a virus allow it to enter certain host cells?
VIRUSES- MULTIPLICATION & HEALTH- pages 44-46
12. What are the steps in active virus multiplication?
13. How does a hidden virus differ from an active virus?
14. What are common viral diseases in humans?
15. What are examples of viral diseases in other organisms besides humans?
16. How are viruses used for gene therapy? Provide an example of a genetic disorder
that can be treated using this technique.
DOMAIN BACTERIA AND DOMAIN ARCHAEA-page 27, Archaebacteria article
17. How are the organisms in Domain Bacteria and Domain Archaea similar?
18. How do the organisms in Domain Archaea differ from the organisms in Domain
Bacteria?
19. What is a characteristic of each of the following types of Archaebacteria?
a. Methanogens
b. Halophiles
c. Thermoacidophiles
BACTERIA- STRUCTURE, OBTAINING FOOD, REPRODUCTION- pages 48-53
20. Describe the function and location of each of the bacterial cell parts:
CELL PART
FUNCTION
LOCATION
Cell Wall
Cell Membrane
Cytoplasm
Ribosomes
Genetic Material
Flagellum
21. Draw and provide an example of each of the cell shapes of bacteria:
Cell Shape
Drawing
Example
Spherical
Rodlike
Spiral
22. Describe the difference between Gram positive and Gram negative bacteria? (not
in book)
23. How many micrometers are in one meter?
24. How are bacteria named? (not in book)
25. How do bacteria obtain food?
26. What is the difference between an aerobe and an anaerobe? (not in book)
27. How do bacteria reproduce through each of the following?
a. binary fission
b. conjugation
28. What is an endospore and when does it form?
BACTERIA- ROLE IN NATURE- Pages 54-57.
29. How do bacteria help produce oxygen in the Earth’s atmosphere?
30. What are cyanobacteria? (not in book)
31. What foods are produced using bacteria?
32. What is pasteurization?
33. What are decomposers and how do they recycle chemicals in dead organisms?
34. How do nitrogen fixing bacteria help plants (like peanut, pea, and soybeans)
survive?
35. How are bacteria used to clean up the environment (bioremediation)?
36. How do bacteria in your body help keep you healthy?
37. How are bacteria used in the medical field?
VIRUSES, BACTERIA, AND YOUR HEALTH- pages 60-65
38. What are the definitions of the following terms?
a. infectious disease
b. toxin
c. antibiotic
d. antibiotic resistance
e. vaccine
39. How are viral infection treatments different from bacterial diseases? How are
viral infections best treated?
40. How can you prevent the spread of infectious diseases?