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Microbiology

Critical Thinking

MicrobiologyCritical Thinking

Critical Thinking

33.

Name each labeled part of the illustrated bacteriophage.

An illustrated bacteriophage is shown. There are arrows pointing to its different parts labeled A, B, C, and D.
34.

In terms of evolution, which do you think arises first? The virus or the host? Explain your answer.

35.

Do you think it is possible to create a virus in the lab? Imagine that you are a mad scientist. Describe how you would go about creating a new virus.

36.

Label the five stages of a bacteriophage infection in the figure:

A shows the bacteriophage sitting on the outside of the cell; the phage DNA is inside the phage. The host cell shows host DNA. B shows phage DNA entering host. C shows phage DNA replicates as well as protein particles. D shows new bacteriophages forming. E shows new phage particles exiting host bacterial cell.
37.

Bacteriophages have lytic and lysogenic cycles. Discuss the advantages and disadvantages for the phage.

38.

How does reverse transcriptase aid a retrovirus in establishing a chronic infection?

39.

Discuss some methods by which plant viruses are transmitted from a diseased plant to a healthy one.

40.

Label the components indicated by arrows.

A plate with a smooth beige background labeled (A). There are holes in this background; these holes are labeled B.
Figure 6.27 (credit: modification of work by American Society for Microbiology)
41.

What are some characteristics of the viruses that are similar to a computer virus?

42.

Does a prion replicate? Explain.

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