One way to detect the growth of a virus in culture is to observe the degeneration and lysis of infected cells in the monolayer of cells. These areas show up as clear, well-defined patches in the cell sheet called

A) colonies.
B) plaques.
C) turbidity.
D) cottony patches.


Ans: B) plaques.

Biology & Microbiology

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Which term describes the presence of abnormally high concentrations of protein in the urine?

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a. includes all populations of all species in a given area.

b. features the living organisms interacting with the physical and chemical environment. c. is the sum of all places in Earth's atmosphere, crust, and waters where organisms live. d. includes members of only one species. e. is at a higher level of organization than an ecosystem.

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In your own mulitcellular body, different cells in your body have a division of labor between them.

a. true b. false

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The discovery of the organism Thermus aquaticus was critical for the development of the technique of PCR

Indicate whether the statement is true or false

Biology & Microbiology