Old cultures of bacteria that have lost their ability to cause disease are said to be ________.

A. pathogenic
B. virulent
C. attenuated
D. impotent


Answer: C

Biology & Microbiology

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Identify the structure indicated by #5:

A. epididymis B. seminal vesicle C. testis D. vas deferens E. prostate gland

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The most medically important bacteria sought in the medical laboratory are cultivated using incubators with temperatures maintained in what range?

a. 35°C to 37°C b. 30°C to 35°C c. 37°C to 39°C d. 25°C to 35°C

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Uracil will pair with

a. ribose. b. adenine. c. cytosine. d. thymine. e. guanine.

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Characteristics of the Orthomyxoviruses include all of the following, except 

A. they have an envelope. B. they have neuraminidase spikes. C. they have hemagglutinin spikes. D. their genome is RNA. E. they include paramyxoviruses.

Biology & Microbiology