Materials move most slowly through the:
a. colon
b. duodenum
c. esophagus
d. jejunum
e. stomach
a
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Which pollutant would most likely be the source of coliform bacteria in a stream?
(a) fertilizers from a golf course. (b) discharge from a factory. (c) forestry activities. (d) sewage or animal wastes.
MacConkey agar serves which purpose when used in the bacterial fecal culture?
a. Evaluation of general flora and predomi-nant species b. Selection of enteric pathogens such as Salmonella, Aeromonas, and others c. Inhibition of normal flora and selection of enteric pathogens d. Enrichment for enteric pathogens such as Salmonella and others
Medical asepsis eliminates all microbes from an object or area
Indicate whether the statement is true or false
What are the functions of helper T cells?
What will be an ideal response?