The Hershey and Chase Experiments,in Which Radioactive Phosphorus (32P)and Radioactive

question 39

Multiple Choice

The Hershey and Chase experiments,in which radioactive phosphorus (32P) and radioactive sulfur (35S) were used,demonstrated that ____.  

• A) DNA labeled with 35S and proteins labeled with 32P can be traced over the course of an experiment
• B) DNA labeled with 32P is transferred from the bacteriophage to the virus
• C) proteins labeled with 35S become deactivated and unable to be transferred
• D) bacteriophages transfer their DNA, not their coat proteins, into their hosts
• E) DNA may be the hereditary material, although bacteriophages transfer both DNA and proteins into their hosts

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Definitions:

Reinforcement

In operant conditioning, a consequence that will strengthen an organism's future behavior whenever that behavior is preceded by a specific antecedent stimulus.

Responses

Reactions or behaviors produced by an organism in response to a specific stimulus or situation.

Continuous Reinforcement

is a method of learning where a desired behavior is reinforced each time it occurs, leading to faster acquisition of the behavior.

Operant Conditioning

A method of learning that occurs through rewards and punishments for behavior, through which an association is made between a behavior and a consequence for that behavior.