Consider the Following Forms of the Amino Acid Alanine (Ala)

question 42

Multiple Choice

Consider the following forms of the amino acid alanine (Ala) .Which statement concerning these structures is FALSE?

• A)Structure I represents the form of Ala present in the blood at physiological pH.
• B)Structure II represents the form of Ala present in the basic environment of the intestines.
• C)Structure III represents the form of Ala present in the acidic environment of the stomach.
• D)Structure IV represents the zwitterion of Ala.
• E)None of the statements are false.

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Definitions:

Higher-order Conditioning

A conditioned response is linked to a new stimulus by associating the new stimulus with a previously conditioned stimulus.

Conditioned Stimulus

A previously neutral stimulus that, after association with an unconditioned stimulus, comes to trigger a conditioned response.

Neutral Stimulus

A stimulus that initially produces no specific response other than focusing attention before it is associated with an unconditioned stimulus.

Extinction

The process through which a conditioned response is weakened by presenting the conditioned stimulus without the unconditioned stimulus.