Bryson Was Three When His Neighbour's House Burned Down

question 35

Multiple Choice

Bryson was three when his neighbour's house burned down. He heard the loud sirens and saw the fire and trembled with fear. Now he's starting preschool. He hears the loud bell ring and associates it with the fire and fire trucks and begins to tremble. In this setting, the sound of the bell is

• A) a neutral response.
• B) a neutral stimulus.
• C) an unconditioned response.
• D) a conditioned stimulus.

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Definitions:

Nutrition

The process of taking in and using food (nutrients).

Protists

Diverse group of eukaryotic microorganisms, which are not animals, plants, or fungi.

Pseudopodia

Temporary protrusions of the cell membrane in certain amoeboid cells, used for movement or ingesting nutrients.

Amoeba

A unicellular protist that moves by means of pseudopodia.