Unit 1 Test - Biology (AP Psychology Section 2)

The spatial junctions where impulses are chemically transmitted from one neuron to another are called

• thresholds.

• neural networks.

• synapses.

• axons.

• neurotransmitters.

The chemical messengers released into the spatial junctions between neurons are called

• neurotransmitters.

• hormones.

• synapses.

• sensory neurons.

• motor neurons.

Hormones are the chemical messengers of the

• endocrine system.

• autonomic nervous system.

• central nervous system.

• action potential.

• peripheral nervous system.

Heritability refers to the extent to which

• unrelated individuals share common genes.

• adult personality is determined by infant personality.

• genetic mutations can be transmitted to one's offspring.

• trait differences in a group are attributable to genetic variations.

• nurture controls a trait rather than nature.

The slowdown of neural communication in multiple sclerosis involves a degeneration of this fatty casing that helps speed up the neural transmissions of a neuron:

• myelin sheath

• endocrine gland

• threshold

• dendrites

Increasing excitatory signals above the threshold for neural activation will not affect the intensity of an action potential. This indicates that a neuron's reaction is

• inhibited by the myelin sheath.

• an all-or-none response.

• primarily electrical rather than chemical.

• dependent on neurotransmitter molecules.

• delayed by the refractory period.

Prozac, a drug commonly prescribed to treat depression, prevents the sending neuron from taking in excess serotonin. Which process does this drug prevent from taking place?

• reuptake

• the all-or-none response

• depolarization

• a refractory period

• an action potential

The brains of patients with Parkinson's disease have little dopamine. Drugs used to treat such patients bind to dopamine receptors, thereby stimulating those receptors. These drugs would be considered

• sympathetic.

• endorphins.

• agonists.

• selectively permeable.

• antagonists.

A person with schizophrenia may have an overactive dopamine system. Drugs used to treat this disorder prevent the action of dopamine by keeping it from binding to its receptors. These drugs are

• sympathetic.

• agonists.

• somatic.

• selectively permeable.

• antagonists.

For you to be able to run, ______ must relay messages from your central nervous system to your leg muscles.

• motor neurons

• sensory neurons

• interneurons

• agonists

• the autonomic nervous system