Microbiology Weekly Review

Exam 2 is Thursday April 8th

Exam 2 Covers Bacteria and Viruses

• See Weekly Reviews for Weeks 6-9 for outlines of what we have covered.
• Practice short answer (matching, multiple choice, crosswords) are posted in Vancko Hall.
• Sample essays are below.
• Note that this maybe a diagram-heavy exam as there are lots of possibilities for diagrams of such things as:
  • cell wall structure in prokaryotes
  • cell structure (both prokaryotes and eukaryotes but mostly the former)
  • viral structure
  • viral replication cycles — both bacteriophages and animal viruses
  • bacterial growth curve
  • viral growth curve
• Diagrams may be presented as parts of essays, i.e. label the diagram and explain what is going on in it, and multiple choice questions where the structures have letters and you have to choose the correct letter to go with the name of the structure.

Possible Essays for Exam 2

1. The 1918 influenza pandemic had a huge impact, costing may lives.  Explain the historical, scientific, and intrinsic (due to the virus itself) factors that made this possible.
2. Could an influenza outbreak be this devastating today?  Explain why or why not.
3. Explain the infective cycle of an animal virus using the diagram below.  Be sure to label the diagram.  [The diagram was from your text.]
4. Compare and contrast the infective cycle of a bacteriophage with that of an animal virus.
5. Thoroughly describe the infective cycle of an animal virus using HIV as an example.
6. Discuss the factors that are involved in choosing an agent for biological warfare using anthrax and/or smallpox as examples.
7. Compare and contrast the following pairs of terms:  [Define each; tell how they are related if they are related; and why they are not if they are not.]
   • capsid and capsule
   • glycocalyx and capsule
   • spikes and fimbriae
   • nucleoid and nucleus
   • chromosome and plasmid
   • eukaryotic and prokaryotic ribosomes
   • eclipse period and latent period
   • virulent and temperate phages
   • chickenpox and shingles
   • fimbriae and flagella
   • naked and enveloped viruses
   • lytic and lysogenic cycles

I will be available for review Tuesday, April 5th at 5 PM and at 6 PM in the lab as well as by appointment.

• Note that I cannot be available from 3:30-5 on Tuesday.