The effect of beneficial microbes of normal biota against invading microbes is called ________.
A. axenic
B. microbial antagonism
C. infectious disease
D. endogenous infection
E. gnotobiotism
Answer: B
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Which one of the following organisms in not one of the four most likely potential biologic warfare or bioterrorism agents?
A) Bacillus anthracis B) Ebola virus C) Variola major D) Yersinia pestis
Explain what is meant by deamination. How does this mutation affect a cytosine (C) versus a methylcytosine (5meC)? What effect does deamination have on CpG islands, and how does that affect the mutation frequencies in these regions?
What will be an ideal response?
Viruses always lack which of the following?
a. A plasma membrane b. Genetic material c. A protein coat d. Organelles
Which of the following mutations would not result in antibiotic resistance?
a. Missense mutation b. Nonsense mutation c. Silent mutation d. Frameshift insertion e. Frameshift deletion