A woman struggling with a bacterial illness is prescribed a month's supply of a potent antibiotic. She takes the antibiotic for about two weeks and feels much better. Should she save the remaining two-week supply, or should she continue taking the drug?
A) She should save the drug for later, because if she keeps taking it the bacteria will evolve resistance.
B) She should save the drug for use the next time the illness strikes.
C) She should save the drug because antibiotics are in short supply, and she may need it to defend herself against a bioterrorism incident.
D) She should continue taking the drug until her immune system can completely eliminate the infection. Otherwise, some bacteria may remain in her system, and they will probably be resistant.
Answer: D
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Why aren't insect tracheae associated with capillary beds?
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A woman with normal blood clotting mates with a man who has hemophilia. Their first child is a boy who has
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a. all of the children will have hemophilia b. half of the boys and none of the girls will have hemophilia c. none of the other children should have hemophilia d. all of the boys and half of the girls will have hemophilia e. half of the boys and half of the girls will have hemophilia
Which of the following can be used as an energy source inside a human body?
a. proteins b. carbon dioxide c. water d. oxygen