Which One of the Following Contributes to the Utility of the Strains

question 101

Multiple Choice

Which one of the following contributes to the utility of the strains of Salmonella typhimurium used in the Ames reversion assay?

• A)They are highly permeable to test substances.
• B)They are defective in DNA repair and,therefore,cannot readily repair damage done by the test substances.
• C)It is very straightforward to assay the conversion of their histidine auxotrophy mutations to histidine prototrophy.
• D)All of the choices are correct.

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Definitions:

Conformity

The act of matching attitudes, beliefs, and behaviors to group norms, values, or expectations.

Classic Experiment

a traditional or well-established form of experimental research that tests hypotheses under controlled conditions to establish cause and effect relationships.

Industrial Revolution

A period of major industrialization from the late 18th to early 19th century that transformed primarily agrarian, rural societies in Europe and America into industrialized, urban ones.

Nineteenth-Century

A period from January 1, 1801, to December 31, 1900, characterized by significant industrial, cultural, and political changes worldwide.