Which of the following statements regarding erhlichiosis is incorrect?
A. The disease vector is transmitted by Ixodes ticks.
B. Symptoms include fever, headache, and muscle pains.
C. Treatment requires an extensive course of antibiotics, usually 3-6 weeks.
D. It often coinfects with Borrelia burgdorferi.
E. The disease is diagnosed by PCR or indirect fluorescent antibody tests.
Answer: C
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A biologist uses a time machine to collect living material from 2 different time periods. Sample A is 3 billion years old and sample B is 1.5 billion years old. How would these samples differ?
A. Prokaryotic organisms would be abundant in sample A but absent from sample B. B. Eukaryotic organisms would be present in both samples but much more common in sample B. C. Prokaryotic organisms would only occur in sample B. D. Eukaryotic organisms would be absent from sample A.
Which of the following structures is NOT a
part of a carpel?
a. stigma b. style c. calyx d. ovary e. all of these are parts of a carpel
Of the general categories of neurons, which carry information to the CNS?
A) inhibitory neurons B) sensory neurons C) motor neurons D) interneurons
Cytotoxic T lymphocytes insert (CD95/lectin/perforin) into the membranes of the cells they target as a first step in killing
What will be an ideal response?