Patients with indwelling catheters (long-term tubes inserted into body orifices for drainage, such as through the urethra and into the urinary bladder) are susceptible to infections because
A) injected solutions are contaminated.
B) their immune systems are weakened.
C) infections can be transmitted from other people.
D) biofilms develop on catheters.
E) bacteria cause infections.
D
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The activator for the lac operon is:
A. CRP. B. cAMP. C. lactose. D. allolactose.
Which of the following best describes the special "high-energy" bond of ATP?
A) phosphoester B) phosphoanhydride C) hydrogen D) ionic E) hydrogenation
The synthetic theory of evolution emphasizes:a
natural selection of individuals. b. population genetics. c. differential reproduction. d. overproduction of individuals. e. homologous versus vestigial structures.
Usually, the alleles are written in pairs to reflect that each individual has two alleles for every gene, one from each parent, such as PP, Pp, or pp. These symbols are called the ______.
Fill in the blank(s) with the appropriate word(s).