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Does 2GB1 have quaternary structure? Why or why not?

Why there is prolonged asymptomatic phase seen in HIV infection ?


A fresh graduate student presented a research proposal on bovine Tuberculosis and strain identification involving conventional culturing techniques in your BSL2 laboratory, what is the hazard, characterize and evaluate the risk that either it is acceptable or not.
Why some species of cocci appeared as chains but others appear in a cuboidal arrangement.
2. The Baltimore classification system (named for the Nobel laureate David Baltimore) is one of several methods of categorizing viruses based on their methods of protein synthesis and nucleic acid replication. There are seven major viral categories under the Baltimore classification system,
A) Design a dichotomous key differentiating the seven viral categories from each other.
B) Single-stranded RNA viruses are divided into two categories—the sense, or +, strand, and the antisense, or -, strand. Explain the differences in how viral mRNA (necessary for the production of viral proteins) is synthesized between the two categories. (Figure 13.17 should be of assistance.)
C) Part of the Baltimore classification system is based on a discovery that led to Baltimore being awarded the Nobel Prize in Medicine in 1975. Describe the connection.

D) Which Baltimore viral category would you classify a virus with the unusual genetic material of a DNA strand attached to a RNA strand? Explain and defend your response.
Labolatory Identification methods of C Botulinum
Make simple Lab report on the spoilage of tomato after seven days
why is almost 95% of bacteria not culturable?

1) During a lytic cycle, which genes are expressed (transcribed and translated)?

Group answers:


  All genes needed for viral replication. 

  Only genes needed by the host cell to defend itself against viruses will be expressed. 

  Both genes needed for viral replication and host cell genes are expressed. 


(The only genes that are expressed are those for viral spikes and capsids wasn't correct)


2)How do viruses hijack their host cells' processes?

Group answers:


Viruses release toxins into the host cell in-between the penetration and biosynthesis phases. 


The host cell's DNA is cut into pieces by enzymes that the viral nucleic acid encodes.


The prophage acts as an enzyme and cuts up host cell DNA. 




Describe three hypotheses proposed to account for the decline in cell numbers during the death phase of a growth curve.
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