PSYC 101 MODULE 2 LATEST UPDATE 2025/2026 WITH
CORRECT VERIFIED ANSWERS/WELL ANALYSED
ALREADY GRADED A+
Heredity - CORRECT ANSWER-The passing of genetic traits from parents to children
Allele - CORRECT ANSWER-Alternate forms of a gene
Trait - CORRECT ANSWER-features or characteristics of a person
Dendrites - CORRECT ANSWER-branching fibers that receive information and bring
it to the neuron; each neuron usually has many dendrites
Axon - CORRECT ANSWER-leaves the neuron and transmits information out of it
(remember: axons away); each neuron typically only has only one axon; the
end of an axon is called its terminal button
Synapse - CORRECT ANSWER-where one neuron sends information to another; its
the point of contact between neurons; the synapse is very important because it
is at the synapse that neurons release a chemical substance called a
neurotransmitter
Sensory neurons - CORRECT ANSWER-Carry information from sense organs to the
brain
Motor neurons - CORRECT ANSWER-carry information from the brain to the body
, Interneurons - CORRECT ANSWER-The most common type of neuron - relay
messages among sensory, motor, and other interneurons.
Action Potential - CORRECT ANSWER-bioelectrical nerve impulse that runs down a
neuron's axon and ultimately causes a neurotransmitter to be released at the
terminal button
Resting potential - CORRECT ANSWER-the slight negative charge that exists when a
neuron is inactive
all-or-none principal - CORRECT ANSWER-the neuron either fires or it doesnt
Steps of action potential - CORRECT ANSWER-1. During the resting potential,
potassium ions are inside the cell, and sodium ions are outside.
2. Action potentials begin when a stimulus (such as burning your finger)
changes how permeable the cell membrane is. Sodium channels then open,
and the sodium ions come rushing into the cell. This state is called
depolarization.
3. Repolarization occurs when sodium channels close and potassium channels
open. Potassium ions then rush out of the cell.
4. Depolarization and repolarization happens all the way down the axon as the
action potential rushes down the length of the axon.
5. When the action potential reaches the end of the neuron, calcium channels
open, and calcium rushes into the cell.
CORRECT VERIFIED ANSWERS/WELL ANALYSED
ALREADY GRADED A+
Heredity - CORRECT ANSWER-The passing of genetic traits from parents to children
Allele - CORRECT ANSWER-Alternate forms of a gene
Trait - CORRECT ANSWER-features or characteristics of a person
Dendrites - CORRECT ANSWER-branching fibers that receive information and bring
it to the neuron; each neuron usually has many dendrites
Axon - CORRECT ANSWER-leaves the neuron and transmits information out of it
(remember: axons away); each neuron typically only has only one axon; the
end of an axon is called its terminal button
Synapse - CORRECT ANSWER-where one neuron sends information to another; its
the point of contact between neurons; the synapse is very important because it
is at the synapse that neurons release a chemical substance called a
neurotransmitter
Sensory neurons - CORRECT ANSWER-Carry information from sense organs to the
brain
Motor neurons - CORRECT ANSWER-carry information from the brain to the body
, Interneurons - CORRECT ANSWER-The most common type of neuron - relay
messages among sensory, motor, and other interneurons.
Action Potential - CORRECT ANSWER-bioelectrical nerve impulse that runs down a
neuron's axon and ultimately causes a neurotransmitter to be released at the
terminal button
Resting potential - CORRECT ANSWER-the slight negative charge that exists when a
neuron is inactive
all-or-none principal - CORRECT ANSWER-the neuron either fires or it doesnt
Steps of action potential - CORRECT ANSWER-1. During the resting potential,
potassium ions are inside the cell, and sodium ions are outside.
2. Action potentials begin when a stimulus (such as burning your finger)
changes how permeable the cell membrane is. Sodium channels then open,
and the sodium ions come rushing into the cell. This state is called
depolarization.
3. Repolarization occurs when sodium channels close and potassium channels
open. Potassium ions then rush out of the cell.
4. Depolarization and repolarization happens all the way down the axon as the
action potential rushes down the length of the axon.
5. When the action potential reaches the end of the neuron, calcium channels
open, and calcium rushes into the cell.
