In the Classic Experiment Conducted by Hershey and Chase,why Was

question 21

Multiple Choice

In the classic experiment conducted by Hershey and Chase,why was the pellet radioactive in the centrifuge tube that contained bacteria with viruses?

• A) The bacteria were in the pellet, and they had incorporated radioactive proteins into their cell membranes.
• B) The radioactive viruses (coats plus DNA) were in the pellet.
• C) The bacteria were in the pellet, and many contained the radioactive viral DNA.
• D) The radioactive protein coats of the viruses were in the pellet.
• E) The radioactive viruses were in the pellet, and the bacteria were in the supernatant.

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Definitions:

Replication

Repeating a study to see if the effect is reliable.

Independent Variables

The factors manipulated or controlled by researchers in an experiment to determine their effects on dependent variables.

Meta-analysis

A statistical procedure that integrates findings from separate but similar studies to identify patterns, contradictions, or strengths in the collected research data.

Reliability

Consistency of measurement.