Leader: Nur
Diseases
Course: Bio 212
Instructor: Sakaguchi
Date: December 1, 2015
Supplemental Instruction
Iowa State University
Helper T cells
Reverse Transcriptase
Lysogenic Cycle
Pathogens
Virulent
Bacteriophage
Epidemic
Capsid
Retrovirus
Pandemic
Membrane Envelope
Lytic Cycle
1. True / False: Viruses have double stranded DNA or RNA and when provided with
polymerase can carry out replication.
2. In 2003, the severe acute respiratory syndrome (SARS) took the lives of about 800
people. Would this be considered a pandemic, epidemic, or an endemic?
3. The plague of Justinian killed nearly 100 million people in the Byzantine Empire
around 541 AD. Pandemic, epidemic, or endemic?
4. What are the three basic structures of viruses?
5. Viruses infect hosts in two ways:
a. ______________ ___________ where the host cells is killed and new virions
are produced.
b. ______________ where the virus coexists with the host cell.
6. In a bacteriophage, the two infection types are called the _________ ________ and the
___________ ___________, respectively.
7. Outline the steps of the lytic cycle.
8. In which step of the lytic cycle would an infection enter the lysogenic cycle?