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BIO 181 ASU EXAM 3 2026 WITH
QUESTIONS AND ANSWERS
T or F: Potassium ions are at high concentrations inside of cells, including
neurons - correct answer-True
The action potential is a result of: - correct answer-the movement of ions
The post-synaptic cell can be: - correct answer-in glands, muscle cells and
neurons
Th resting potential of a neuron is - correct answer--60mV
T or F: The cell body refers to the part of the neurons that begin at the
dendrites and extend to the axon terminal - correct answer-false
T or F: Voltage gated ion channels open when a protein binds to the
receptor - correct answer-false
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T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells -
correct answer-false
T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid -
correct answer-false
In the motor end plate, the event that is the immediate trigger for exocytosis
is - correct answer-calcium ions
T or F: Fast Neurons as described in lecture require cytoplasmic signal
transduction to open an ion channel. - correct answer-False
T or F: Only pre-synaptic neurons are coated with myelin. - correct answer-
False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area
is called a motor end plate. - correct answer-True
T or F: Receptors are made from membrane-bound polyribosomes. -
correct answer-True
BIO 181 ASU EXAM 3 2026 WITH
QUESTIONS AND ANSWERS
T or F: Potassium ions are at high concentrations inside of cells, including
neurons - correct answer-True
The action potential is a result of: - correct answer-the movement of ions
The post-synaptic cell can be: - correct answer-in glands, muscle cells and
neurons
Th resting potential of a neuron is - correct answer--60mV
T or F: The cell body refers to the part of the neurons that begin at the
dendrites and extend to the axon terminal - correct answer-false
T or F: Voltage gated ion channels open when a protein binds to the
receptor - correct answer-false
, 2 |Page
T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells -
correct answer-false
T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid -
correct answer-false
In the motor end plate, the event that is the immediate trigger for exocytosis
is - correct answer-calcium ions
T or F: Fast Neurons as described in lecture require cytoplasmic signal
transduction to open an ion channel. - correct answer-False
T or F: Only pre-synaptic neurons are coated with myelin. - correct answer-
False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area
is called a motor end plate. - correct answer-True
T or F: Receptors are made from membrane-bound polyribosomes. -
correct answer-True
