Download Identify the structures labeled a–e in the diagram of the human

Identify the structures labeled a–e in the diagram of the human
immunodeficiency virus shown below.
A= glycoprotein
B=RNA
D=lipid bilayer membrane
C=reverse transcriptase
E=capsid
Answer the questions in the space provided.
1. What did Wendell Stanley’s work suggest about the nature of viruses?
Stanley's work seemed to indicate that the infectious agent in TMV was a protein, in
spite of the fact that TMV was known to contain RNA ____________________________
_______________________________________________________________________
2. Why must a person receive a different flu vaccine each year to be protected against
the flu?
Because we need protection from newly created flu viruses which our past vaccinations
were not developed to fight.
_________________________________________
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The diagrams below represent five steps in the lytic cycle of a bacteriophage. The order of the
steps has been scrambled. Arrange the steps in their correct order by writing the letter of each
step, and briefly describe what is happening in each step.
In step C the virus attach to the cell in step A virus inject it’s DNA in step E
protein coats are new DNA are formed in step D the new viruses are formed
and finally in step B the new viruses released from the cell and the cell has
been destroyed .
a=2
b=5
c=1
d=4
e=3