Which of the following locations is likely to harbor a biofilm?
a. our teeth
v. lungs of a cystic fibrosis patient
c. medical devices, such as a pacemaker or catheter
d. all of these locations
Answer: d. all of these locations
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The ability of glucose to repress the lac operon depends on which of the following effector molecules?
A. allolactose B. cAMP C. tryptophan D. ADP E. starch
During gel electrophoresis, DNA fragments are separated by size
a. True b. False Indicate whether the statement is true or false
A fungal infection found mostly in the tropics and temperate regions is characterized by the development of soft, yellow or pale-brown aggregations around hair shafts in the axillary, facial, genital, and scalp regions. The fungus that would most likely be isolated is:
a. Candida. b. Malassezia. c. Cryptococcus. d. Trichosporon.
The structure that is compared to a whip is a(n)
a. microfilament. b. intermediate filament. c. cilium. d. flagellum. e. microtubule.