The heart and lungs are in the _____ cavity
a. thoracic c. cranial
b. pelvic d. abdominal
A
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HIV once only infected nonhuman primates and now infects humans as well. Likewise, the avian flu only infected birds but now infects humans. What causes the host range of a virus to increase?
A. The size of the virus changes over time and allows the virus to infect a different host cell. B. The virus integrates with another virus to gain the DNA sequences that allow infection of a new host cell. C. The virus gains entry into a new host cell through random mutation of the virus's genetic material. D. Changes in the human genome over time make humans more susceptible to infection by different kinds of viruses. E. None of the answer options is correct.
What is the main purpose of reduction of pyruvate to lactate during fermentation?
a. Produce more ATP. b. Produce CO2. c. Convert NADH to NAD+. d. Produce both ATP and CO2. e. Produce ATP and convert NADH to NAD+.
What does pharmacogenomics determine about a patient to help with dosage of drugs such as
warfarin?
a. warfarin metabolism genes b. body size c. other diseases the patient may have d. medications the patient is taking e. patient age
If a structure has no apparent function in one species, yet is homologous to a functional organ in another species, this structure is termed
A. homeotic. B. analogous. C. homologous. D. heterologous. E. vestigial.