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Epigenetics is defined as:

Question 1 options:

	How the environment changes our DNA
	Changes to DNA that are only evident after trauma or abuse
	How the environment alters our gene expression
	Changes to protein expression in the hippocampus

Question 2 (2 points)

_______ are cells of the nervous system that have an important role in support functions, such as immunity, nutrition, and neurogenesis.

Question 2 options:

	Muscle spindles
	Ion channels
	Motor neurons
	Glia

Question 3 (2 points)

Chemical communication between neurons is characterized by:

Question 3 options:

	The release of neurotransmitters from the presynaptic terminal that then moves across the synaptic cleft to bind to receptors on the postsynaptic cell
	Depolarization of the axonal membrane by Na+ ions to move the signal down the axon
	An influx of K+ into the axon that makes the axonal membrane more negative
	The release of Ca2+ ions from the presynaptic terminal that then move to the nucleus and cause release of neurotransmitters through the postsynaptic cell

Question 4 (2 points)

Within evolutionary theory, intersexual selection is best represented by which example:

Question 4 options:

	Greater song complexity evolved in a species of bird because these males mated less often
	None of these are correct.
	Male finches evolved smaller beaks because this trait was not preferred by potential mates.
	Brighter plumage evolved in male peacocks because these males mated more often

Question 5 (2 points)

Choose the correct component of the CNS that develops from the forebrain (procencephalon):

Question 5 options:

	Superior colliculus
	Pons
	Spinal cord
	Limbic system

Define psychological adaptations and physiological adaptations. Provide an example of each type of adaptation and include the input, procedure, and output to explain how these adaptations are different.

Question 6 options:

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Question 7 (5 points)

Compare and contrast the somatic and autonomic nervous systems.

Question 7 options:

Question 8 (5 points)

Sally is interested in studying the brains of patients with cognitive dysfunction. Choose a brain scan methodology she could use, briefly explain what it measures, and hypothesize what she might learn about the brain with this specific type of brain scan.

Question 8 options:

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Question 9 (5 points)

Choose one event in chemical communication at the synapse and explain how inhibiting or blocking this event would alter chemical communication.

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