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Chapter 20: Bacteria and Viruses
Section 20-1 Viruses
1.
Explain how Ivanovski discovered viruses.
2.
What does “virus” mean in Latin?
3.
What are viruses?
4.
What 1 thing do all viruses have in common?
5.
Describe a typical virus.
6.
Identify the outside of all viruses and what it is made of.
7
Draw a T4 bacteriophage in the space below and label the: nucleic acid, head, tail & tail fiber
8.
Explain how a virus infects its host.
9.
Discuss a Lytic infection
10.
Discuss a Lysogenic infection
11.
How is a retrovirus different from other viruses when undergoing protein synthesis?
Section 20-2: Prokaryotes
1.
Name the two domains of bacteria.
2.
Label the structure of a typical bacterium shown below.
3.
Discuss the characteristics of the Domain Bacteria, kingdom Eubacteria.
4.
Discuss the characteristics of the Archaebacteria kingdom (domain Archaea)
5.
Draw and label the three shapes of bacteria in the space below.
6.
How do bacteria reproduce asexually?
7.
What is conjugation and what does it bring to the bacteria involved?
8.
What is an endospore and when are they produced?
9.
We always think of bacteria as being bad for us. Explain 3 ways that bacteria are vital to the living
world.
Section 20 – 3: Diseases Caused by Bacteria and Viruses
1.
What is a pathogen?
2.
Okay, now the bad. Name the two ways bacteria cause disease in living organisms.
3.
Make a list of human bacterial diseases.
4.
How can bacterial diseases be prevented.
5.
How can they be treated?
6.
Make a list of human diseases caused by viruses.
7.
How can we prevent the spread of viruses?
8.
What is causing the “Superbugs”?
9.
So if you aren’t a total germaphobe yet, read the section on prions. What is it and what does it effect?