Frederick Griffith Conducted Experiments Where Nonlethal Bacteria Acquired the Ability

question 23

Multiple Choice

Frederick Griffith conducted experiments where nonlethal bacteria acquired the ability to cause lethal pneumonia due to the presence of an unknown chemical. This chemical was later found to be

• A)RNA.
• B)a protein.
• C)DNA.
• D)nonhereditary material.
• E)phosphorus.

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Definitions:

Recall

The act of retrieving information or memories from the past, without the aid of specific cues for what is being remembered.

Proactive Interference

A phenomenon in memory research where older information interferes with the recall of newer information.

Retroactive Interference

An occurrence where newly acquired knowledge hampers the retrieval of information learned earlier.

Encoding Failure

A phenomenon where the brain fails to create a memory link for information, making it difficult to remember later.