Which of the following is not a reason why healthcare settings are hot zones for antibiotic-resistant pathogens?
A) Caregivers may be overly fatigued and not wash their hands properly.
B) Air is recirculated from patient isolation rooms to the rest of the hospital.
C) There is extensive antibiotic use.
D) There is an abundance of susceptible hosts.
E) Healthcare staff caring for a high number of patients may wrongly assume that glove use can replace hand hygiene.
Answer: B
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The connection point of two sister chromatids
is called the
a. chromatid. b. chromatin. c. centriole. d. centrosome. e. centromere
How will the destruction of forests affect the amount of carbon dioxide in the atmosphere?
1.It should have no effect. Carbon dioxide is put in the air by the burning of fossil fuels. 2.There will be fewer plants to absorb carbon dioxide through photosynthesis, so carbon dioxide can build up in the atmosphere. 3.It should reduce the amount of carbon dioxide produced since there will be fewer organisms undergoing cellular respiration. 4.Oxygen and carbon dioxide are balanced. If you increase carbon dioxide by plant removal you will decrease the amount of oxygen.
The most common method of bacterial reproduction is
A) prokaryotic fission. B) meiosis. C) mutation. D) budding.
Fish gills consist of a series of
A) parabronchi. B) interconnected bronchioles. C) spiracles. D) filaments. E) opercula.