The Hershey-Chase Experiments, in Which ³²P and ³⁵S Were Used

question 4

Multiple Choice

The Hershey-Chase experiments, in which ³²P and ³⁵S were used to label biological molecules, demonstrated ____.

• A)the semiconservative nature of DNA replication
• B)that harmless bacterial cells can be permanently and heritably transformed into lethal bacterial cells
• C)that pure DNA extracted from disease-causing bacteria transformed harmless strains into killer strains
• D)that bacteriophages transfer their DNA, but not their protein coats, to their host bacteria
• E)that DNA content of a cell does not vary over time

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Definitions:

Case Study Method

A research strategy that involves an in-depth investigation of a single subject, group, or event to explore causation in order to find underlying principles.

In-depth Investigation

A comprehensive and detailed examination of a subject or issue, aiming to uncover deeper insights or facts.

Naturalistic Observation Method

A research methodology where subjects are observed in their natural environment without any manipulation by the observer.

Careful Surveillance

The meticulous observation or monitoring of behaviors, activities, or information for the purpose of influence, management, or protection.