A particular variant of the lambda bacteriophage has a DNA double-stranded genome of 51,365 base pairs. How long would this DNA be?
What will be an ideal response?
One base pair is 0.34 nm; therefore, 51,365 bp × 0.34 nm/bp = 17,464 nm or 17.46 ?m.
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A 24-year-old woman is diagnosed with human papillomavirus (HPV) after having her annual Papanicolaou (Pap) smear. She was not vaccinated with the Gardasil vaccine. Which serotypes of the virus does she need to be concerned about that demonstrate the greatest risk for developing cervical cancer?
a. 12 and 14 b. 13 and 15 c. 16 and 18 d. 17 and 19
The difference between intrapleural pressure and intra-alveolar pressure is
A) the driving force for air flow into and out of the lungs. B) zero. C) atmospheric pressure. D) approximately 100 mm Hg. E) transpulmonary pressure.
Under certain conditions, the rate of mutation of a particular gene may be fairly easy to determine. Name three properties of the mutation that would favor the most direct determination of mutation rate
What will be an ideal response?
The probable cause for the relapsing nature of relapsing fever caused by Borrelia recurrentis is
A. periodic spore dormancy and activation. B. organisms that survive and propagate after spirochete-induced fever C. the sequential appearance of new antibiotic resistant variants. D. successive appearance of antigenic variants. E. periodic hormonal fluctuations in the host.