Bio 181 ASU Exam 3 2025/2026 Exam
Questions and Answers | A+ Score
Assured
T or F: Potassium ions are at high concentrations inside of cells, including
neurons - 🧠 ANSWER ✔✔True
The action potential is a result of: - 🧠 ANSWER ✔✔the movement of ions
The post-synaptic cell can be: - 🧠 ANSWER ✔✔in glands, muscle cells and
neurons
Th resting potential of a neuron is - 🧠 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 - 🧠 ANSWER ✔✔false
, T or F: Voltage gated ion channels open when a protein binds to the
receptor - 🧠 ANSWER ✔✔false
T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells -
🧠 ANSWER ✔✔false
T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid - 🧠
ANSWER ✔✔false
In the motor end plate, the event that is the immediate trigger for exocytosis
is - 🧠 ANSWER ✔✔calcium ions
T or F: Fast Neurons as described in lecture require cytoplasmic signal
transduction to open an ion channel. - 🧠 ANSWER ✔✔False
T or F: Only pre-synaptic neurons are coated with myelin. - 🧠 ANSWER
✔✔False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area
is called a motor end plate. - 🧠 ANSWER ✔✔True
T or F: Receptors are made from membrane-bound polyribosomes. - 🧠
ANSWER ✔✔True
Questions and Answers | A+ Score
Assured
T or F: Potassium ions are at high concentrations inside of cells, including
neurons - 🧠 ANSWER ✔✔True
The action potential is a result of: - 🧠 ANSWER ✔✔the movement of ions
The post-synaptic cell can be: - 🧠 ANSWER ✔✔in glands, muscle cells and
neurons
Th resting potential of a neuron is - 🧠 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 - 🧠 ANSWER ✔✔false
, T or F: Voltage gated ion channels open when a protein binds to the
receptor - 🧠 ANSWER ✔✔false
T or F: Excitatory synapses cause hyperpolarization of post-synaptic cells -
🧠 ANSWER ✔✔false
T or F: Acetylcholinesterase breaks acetylcholine into muscarinic acid - 🧠
ANSWER ✔✔false
In the motor end plate, the event that is the immediate trigger for exocytosis
is - 🧠 ANSWER ✔✔calcium ions
T or F: Fast Neurons as described in lecture require cytoplasmic signal
transduction to open an ion channel. - 🧠 ANSWER ✔✔False
T or F: Only pre-synaptic neurons are coated with myelin. - 🧠 ANSWER
✔✔False
T or F: When the presynaptic cell contacts a muscle cell, the synapse area
is called a motor end plate. - 🧠 ANSWER ✔✔True
T or F: Receptors are made from membrane-bound polyribosomes. - 🧠
ANSWER ✔✔True
