The microbiologist identified an organism that produces large c-hemolytic colonies on blood agar and appears as a gram-variable rod on Gram staining. In order to further identify the organ-ism, the microbiologist should:
a. no further identification is necessary.
b. complete a biochemical panel and antibi-otic sensitivity.
c. complete a biochemical panel, no antibi-otic sensitivity is warranted.
d. report the organism as Bacillus spp.
B
Based on the information presented in the question, the microbiologist should complete a bio-chemical identification and an antibiotic susceptibility. At this point, the type of isolate is un-known and therefore, it is important to identify the species to determine the antibiotic pattern. If the organism is indeed B. anthracis, some strains produce ?-lactamases. CLSI has published technical guidelines and interpretive criteria for testing Bacillus spp.
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Answer the following statement true (T) or false (F)
Two alleles of the same gene ________
A) are always different B) are always the same C) can be the same or can be different D) originate from the same parent
The evolutionary explosion of new species from a common ancestor is
A. adaptive radiation. B. convergent evolution. C. divergent evolution. D. gradualism.
Suppose that your roommate is on a 48-hour fast for food and drink. This means that she has no nutrients or liquids entering her system. What would happen to her blood pressure, and why? What hormones would be triggered by the lack of incoming liquids?
Explain how these hormones work and how the fast would affect her blood pressure and urine volume. What will be an ideal response?