BIO 181 Exam 3 2025 (ASU) | Actual Exam Questions and Correct Answers
(Verified Answers) | Latest Version | Just Released
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
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
, 2
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
The terminal web: - (CORRECT ANSWER)is a site of exocytosis
T or F: Excitatory synapses cause depolarization of the post-synaptic cell - (CORRECT ANSWER)True
T or F: The membrane potential (resting potential) is largely set by the Na-K- ATPase pump. - (CORRECT
ANSWER)true
The neural tissues are: - (CORRECT ANSWER)spinal cord, sensory neurons and brain
T or F: the axon from a pre-synaptic cell contacts the axon of another neuron - (CORRECT ANSWER)false
T or F: The receptors in post-synaptic cells are the basis on which the synapse can be defined as
inhibitory or excitatory - (CORRECT ANSWER)false
4 types of glial cells - (CORRECT ANSWER)schwann, oligodendrocytes, astrocytess and microglia
T or F: The axon hillock in the pre-synaptic neuron fires based on temporal and spatial summation of
inputs - (CORRECT ANSWER)true
The central nervous contains - (CORRECT ANSWER)spinal column and brain
(Verified Answers) | Latest Version | Just Released
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
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
, 2
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
The terminal web: - (CORRECT ANSWER)is a site of exocytosis
T or F: Excitatory synapses cause depolarization of the post-synaptic cell - (CORRECT ANSWER)True
T or F: The membrane potential (resting potential) is largely set by the Na-K- ATPase pump. - (CORRECT
ANSWER)true
The neural tissues are: - (CORRECT ANSWER)spinal cord, sensory neurons and brain
T or F: the axon from a pre-synaptic cell contacts the axon of another neuron - (CORRECT ANSWER)false
T or F: The receptors in post-synaptic cells are the basis on which the synapse can be defined as
inhibitory or excitatory - (CORRECT ANSWER)false
4 types of glial cells - (CORRECT ANSWER)schwann, oligodendrocytes, astrocytess and microglia
T or F: The axon hillock in the pre-synaptic neuron fires based on temporal and spatial summation of
inputs - (CORRECT ANSWER)true
The central nervous contains - (CORRECT ANSWER)spinal column and brain
