Question 1

Corey was in an automobile accident that resulted in an injury to her brain. She now has difficulty with her hearing and her ability to recognize faces. The part of her brain most likely injured was her ________ lobe.

Accepted Answer

A)  frontal 
B)  temporal 
C)  occipital 
D)  parietal

Question 2

Despite its dangers, a young man continues to take cocaine because of the feelings of euphoria it produces for him. This powerful arousal of his nervous system is probably due to cocaine's ability to ________.

Accepted Answer

A)  inhibit enzymes that break down neurotransmitters 
B)  block the receptor sites for neurotransmitters 
C)  increase the release of neurotransmitters 
D)  prevent neurotransmitters from being reabsorbed into the synaptic vesicles

Question 3

Neurons that carry messages from one neuron to another are called ________ neurons.

Accepted Answer

A)  efferent 
B)  afferent 
C)  association 
D)  primary

Question 4

The ability of the brain to change in response to experience is called ________.

Accepted Answer

A)  neural plasmosis 
B)  reticular formation 
C)  neurogenesis 
D)  neural plasticity

Question 5

Organisms or fluids attempting to enter the cell body of a neuron must first pass through the ________.

Accepted Answer

A)  cell membrane 
B)  dendrite 
C)  axon 
D)  myelin sheath

Question 6

An organism's entire unique genetic makeup is called its ________.

Accepted Answer

A)  phenotype 
B)  genotype 
C)  genetic imprint 
D)  polygenic inheritance

Question 7

The nervous system is comprised of two major parts - the ________.

Accepted Answer

A)  central nervous system and the peripheral nervous system 
B)  brain and the spinal cord 
C)  afferent nervous system and the efferent nervous system 
D)  sympathetic nervous system and the parasympathetic nervous system

Question 8

Which of the following statements is true?

Accepted Answer

A)  A neuron fires in response to every message it receives. 
B)  Signals above the threshold of excitation will prevent a neuron from firing. 
C)  Impulses in myelinated neurons may reach speeds of nearly 400 feet per second. 
D)  The strength (intensity) of a neuron's action potential depends on the strength of its excitation.

Question 9

A middle-aged person who is depressed most likely has a problem with which of the following neurotransmitters?

Accepted Answer

A)  serotonin 
B)  GABA 
C)  dopamine 
D)  acetylcholine

Question 10

Neurons typically have ________.

Accepted Answer

A)  many axons and one dendrite 
B)  one axon and many dendrites 
C)  one axon and one dendrite 
D)  many axons and many dendrites

Exam 2: The Biological Basis of Behavior