Describe the difference between a lytic and lysogenic
bacteriophage cycle
Complete the following definitions with regards to viral
replication:
Retrovirus
Prophage
Burst Size
Burst Time
How does bacteriophage lambda "decide" whether to enter the
lytic or lysogenic cycle when it infects a bacterium and how does
it execute the decision? Which of the statements below are
correct?
a. In a population of healthy and vigorously growing bacteria
cells it propagates lytically.
b. In a population of poorly growing bacteria cells it
propagates lysogenically.
c. In the lysogenic state, the prophage genome is inactive
(repressed).
d. In the lytic phase, the phage genes for reproduction are...
Explain similarities and differences between animal viruses and
bacteriphages, also use HIV as an example of its similarities and
differences in replication.
Describe & diagram a basic bacteriophage reproductive cycle.
How does this compare to infection by animal viruses? Describe at
least 3 special adaptations, including latent phases, that some
animal viruses have to avoid the immune system?
Discuss the differences in structure between an icosahedral, a
helical, and a complex virus. Are viruses considered 'cells'? Why
or why not? Discuss both the negative aspects, as well as the
positive uses, for viruses.
(a) THREE (3) major
differences between the Krebs cycle and the Calvin
cycle.
(b) Plants are grown in glasshouse for all seasons. Explain in
details why it is essential to keep the temperature low when light
intensity is low.