To Prove That DNA Is the Transforming Substance, Avery, MacLeod

question 110

Multiple Choice

To prove that DNA is the transforming substance, Avery, MacLeod, and McCarty demonstrated that DNA could transform nonvirulent strains of pneumococcus.The definitive evidence for transformation was

• A) enzymes that destroy proteins also destroy transforming activity.
• B) the transformed R bacteria passed on the virulence trait to daughter cells.
• C) enzymes that destroy complex carbohydrates also destroy transforming activity.
• D) the transforming activity is destroyed by boiling.
• E) other strains of bacteria also can be transformed successfully.

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Definitions:

Hindsight Bias

The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, also known as the "knew-it-all-along" effect.

Confounding Variable

An external factor in a research study that correlates with both the dependent and independent variables, potentially skewing results.

Alcoholic Beverage

A drink that contains ethanol, commonly known as alcohol, which is a psychoactive substance.

Control Group

In experimental research, the group that does not receive the treatment or intervention being tested, serving as a baseline for comparison.