Which of the following sites of the human body does not have indigenous microflora?

A) bloodstream
B) colon
C) distal urethra
D) vagina


A) bloodstream

Biology & Microbiology

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Match the following items with the correct phrases.

_______1. The width of a typical coccus. _______2. The resolving power of the unaided eye. _______3. The resolving power of the scanning electron microscope. _______4. The resolving power of the transmission electron microscope. _______5. The resolving power of the compound light microscope. a. 0.2 nm b. 20 nm c. 0.2 ?m d. 1 ?m e. 0.2 mm

Biology & Microbiology

In the graph above, the point at which the potassium channels open is indicated by the letter


A) A.
B) B.
C) C.
D) D.
E) E.

Biology & Microbiology

The only class of antibody that can cross the placenta is

A. IgA. B. IgD. C. IgG. D. IgE.

Biology & Microbiology

_____ is an increase in the number of circulating white blood cells

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology