Which of the following is caused by an opportunistic pathogen?
A) trichomoniasis
B) genital herpes
C) candidiasis
D) gonorrhea
E) chancroid
C
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A bacterium is an example of a
(a) prokaryotic cell. (b) eukaryotic cell. (c) plant cell. (d) all of the above.
Adenoviruses are a frequent cause of acute upper respiratory tract infections in humans. Adenoviruses are non-enveloped and their capsid contains a "fiber" protein that is analogous in function to the spike glycoproteins of HIV. Which of the following would be ACCURATE about an adenovirus that has a mutation in its fiber protein gene?
A. The virus would still cause upper respiratory tract infections in humans but at a slower rate. B. Because it has a defective fiber protein, it will now have a broader host range. C. It would not be able to cause disease in humans. D. It would be able to infect humans normally, but would not be able to replicate its genome. E. It would be able to infect humans normally, but would not be able to release new adenoviruses from the human cells.
In the process of differentiation,
a. daughter cells usually receive different assortments of genes. b. cells with the same genes have different genes expressed. c. cells become specialized as a result of cleavage. d. daughter cells acquire different characteristics as a result of gene mutations. e. all of these occur.
A strain of ________ is being considered to control the mosquito vector of malaria.
What will be an ideal response?