Select the correct meaning for the following pedigree symbol.





A) Unaffected male

B) Unaffected female

C) Mating

D) Affected male

E) Affected female


B) Unaffected female

Biology & Microbiology

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Bacteremia is a term used

A) to indicate the presence of bacteria in the blood. B) synonymously with septicemia. C) when the same organism is isolated from more than one site. D) to indicate the presence of bacteria in the lungs.

Biology & Microbiology

This microscope produces an image of a light cell against a dark background; internal structures are not visible.

A) Compound light microscope B) Phase-contrast microscope C) Darkfield microscope D) Fluorescence microscope E) Electron microscope

Biology & Microbiology

The corpus callosum, which lies between the two cerebral hemispheres of the brain, is actually composed of an extensive network of

A. connective tissue. B. cell bodies. C. nerve tracts. D. blood vessels.

Biology & Microbiology

What causes smoker's cough?

A) Smoking affects the respiratory center neurons in the medulla. B) Smoking damages the cilia that normally remove debris-laden mucus. C) Nicotine irritates the lining of the lung. D) Carbon monoxide in the smoke triggers the cough reflex.

Biology & Microbiology