A Pro- Strain of Bacteria,which Has Not Been in Contact

question 25

Multiple Choice

A pro- strain of bacteria,which has not been in contact with any other strains,develops the ability to produce the amino acid proline.What is the most likely mechanism of this mutant "rescue?"

• A)addition of the pro+ gene via transduction
• B)addition of the pro+ gene during conjugation
• C)removal of the pro- gene during excision
• D)addition of the pro+ gene via transformation
• E)correction of the pro- gene by reverse transcriptase

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Definitions:

John B. Watson

An American psychologist who is considered one of the founders of behaviorism, emphasizing the importance of observable behavior over internal mental states.

Phobias

Irrational, intense, persistent fears of certain situations, activities, things, or people, leading to avoidance behavior.

Classical Conditioning

A learning process that occurs through associations between an environmental stimulus and a naturally occurring stimulus, famously demonstrated by Ivan Pavlov's experiments with dogs.

Operant Conditioning

A method of learning where the intensity of an action is altered by either rewards or penalties.