AP Psychology: Biological Bases of Behavior 2

Question 1

Which neurotransmitter is primarily associated with pleasure, reward, and motivation?

Accepted Answer

Dopamine

Answer

Dopamine plays a central role in the brain's reward system, motivation, and pleasure pathways.

Question 2

What is the function of the hippocampus in the brain?

Accepted Answer

Formation of new long-term memories

Answer

The hippocampus is essential for converting short-term memories into long-term memories.

Question 3

What is the all-or-none principle in neural transmission?

Accepted Answer

A neuron either fires at full strength or does not fire at all

Answer

The all-or-none principle states that once the threshold of excitation is reached, a neuron fires at full intensity regardless of stimulus strength.

Question 4

Which brain structure serves as the relay station for sensory information (except smell)?

Accepted Answer

Thalamus

Answer

The thalamus receives sensory input and routes it to the appropriate cortical areas for processing.

Question 5

What role does the endocrine system play in behavior?

Accepted Answer

It releases hormones that regulate mood, growth, metabolism, and stress responses

Answer

The endocrine system uses hormones as chemical messengers that influence behavior, emotions, and physiological processes.

AP Practice Test