Which of the following does NOT affect pathogen growth?

A) availability of microbial nutrients
B) pH
C) temperature
D) doubling time


Answer: D

Biology & Microbiology

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________ defines the lowest quantity of an antigen that can be detected in a serological test

A) Specificity B) Antigenic capacity C) Minimal inhibitory concentration D) Sensitivity

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The sodium-potassium pump is called an electrogenic pump because it _____

A) pumps equal quantities of Na+ and K+ across the membrane B) contributes to the membrane potential C) ionizes sodium and potassium atoms D) is used to drive the transport of other molecules against a concentration gradient

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What is the fundamental purpose of staining in light microscopy?

a. To kill the specimen b. To make the specimen appear larger in the microscope c. To see the specimen without the aid of a microscope d. To increase the contrast and visibility of the specimen

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Robert Koch was involved in research on all of the following topics EXCEPT

A) the cause of anthrax. B) the cause of fermentation. C) development of a method to determine the cause of an infectious disease. D) the cause of tuberculosis. E) techniques for isolating microbes in the laboratory.

Biology & Microbiology