An opportunistic pathogen frequently seen in AIDS patients, ________ spreads rapidly to various organs.
A. Mycobacterium tuberculosis
B. Mycobacterium avium-intracellulare
C.
| Mycobacterium leprae |
D. Mycobacterium bovis
E. Mycobacterium ulcerans
Answer: B
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Sulfonamides and other drugs that inhibit folic acid synthesis have a high therapeutic index because
A. humans synthesize folic acid by a process that is not sensitive to sulfonamides. B. humans do not use folic acid. C. humans do not synthesize folic acid but obtain it in their diets. D. None of these are correct.
The kangaroo rat gets the bulk of its water from ____
a. drinking liquids b. absorption through its skin c. ingesting food d. oxidative reactions in its cells e. reuptake of water from urine
What would happen if the trachea did not have cartilaginous rings?
A) Incoming air would not undergo filtration. B) Incoming air would not be humidified. C) Sense of smell would be lost, and food would taste funny. D) The trachea would collapse.
Which of the following lifestyle changes would have the greatest impact on reducing an individual's environmental impact?
A. Reducing the number of children in your household to reach a zero population growth rate. B. Buying a more fuel-efficient vehicle and only using it when you are taking long trips instead of traveling locally. C. Downsizing and moving into a smaller house. D. Reducing your meat consumption to once or twice a week. E. Waiting until later in life to have children and only having one per couple.