Which of the following would limit your possible exposure to the Lassa virus?
A) using insect repellant
B) not eating bushmeat
C) keeping a rodent-free home
D) avoiding sexual intercourse
E) not eating anything that hasn't been well cooked
Answer: C
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The collective term for the organisms living on or in the human body is
A) normal microbial flora. B) fomite flora. C) transient microbial flora. D) pathogenic flora.
When the conditions of the Hardy-Weinberg equilibrium are met (select all correct choices),
A. evolution occurs. B. evolution does not occur. C. gene frequencies in the population change over time. D. gene frequencies in the population do not change over time. E. none of these occur when conditions of the Hardy-Weinberg equilibrium are met.
How would the hydrolysis of phosphodiester bonds impede the origin of life?
A. It would slow the rate of protein synthesis. B. It would prevent the assembly of nucleic acids. C. It would stop the formation of cell membranes. D. It would digest amino acids. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about the molecular basis of early life-forms? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
A culture medium consisting of agar, human blood, and beef heart is a:
A. None of the above B. Selective medium C. Complex medium D. Defined medium