Unit 2 AP Psychology 2025/2026 Exam
Questions and Correct Answers | New
Update
biological psychologists - 🧠 ANSWER ✔✔the scientific study of the links
between biological and psychological processes.
neuron - 🧠 ANSWER ✔✔a nerve cell; the basic building block of the
nervous system.
dendrites - 🧠 ANSWER ✔✔the bushy, branching extensions of a neuron
that receive messages and conduct impulses toward the cell body.
axon - 🧠 ANSWER ✔✔the neuron extension that passes and electrical
messages through its branches to other neurons or to muscles or glands.
, myelin sheath - 🧠 ANSWER ✔✔a layer of fatty tissue segmentally encasing
the fibers of many neurons; enables vastly greater transmission speed of
neural impulses as the impulse hops from one node to the next.
action potential - 🧠 ANSWER ✔✔a neural impulse; a brief electrical charge
that travels down an axon.
refractory period - 🧠 ANSWER ✔✔a period of inactivity after a neuron has
fired.
threshold - 🧠 ANSWER ✔✔the level of stimulation required to trigger a
neural impulse.
all-or-nothing response - 🧠 ANSWER ✔✔a neuron's reaction of either firing
or not firing.
synapse - 🧠 ANSWER ✔✔the junction between the axon tip of the sending
neuron and the dendrite or cell body of the receiving neuron. The tiny gap
at this junction is called the synaptic gap or synaptic cleft.
neurotransmitters - 🧠 ANSWER ✔✔chemical messengers that cross the
synaptic gaps between neurons. When released by the sending neuron,
they travel across the synapse and bind to receptor sites on the receiving
Questions and Correct Answers | New
Update
biological psychologists - 🧠 ANSWER ✔✔the scientific study of the links
between biological and psychological processes.
neuron - 🧠 ANSWER ✔✔a nerve cell; the basic building block of the
nervous system.
dendrites - 🧠 ANSWER ✔✔the bushy, branching extensions of a neuron
that receive messages and conduct impulses toward the cell body.
axon - 🧠 ANSWER ✔✔the neuron extension that passes and electrical
messages through its branches to other neurons or to muscles or glands.
, myelin sheath - 🧠 ANSWER ✔✔a layer of fatty tissue segmentally encasing
the fibers of many neurons; enables vastly greater transmission speed of
neural impulses as the impulse hops from one node to the next.
action potential - 🧠 ANSWER ✔✔a neural impulse; a brief electrical charge
that travels down an axon.
refractory period - 🧠 ANSWER ✔✔a period of inactivity after a neuron has
fired.
threshold - 🧠 ANSWER ✔✔the level of stimulation required to trigger a
neural impulse.
all-or-nothing response - 🧠 ANSWER ✔✔a neuron's reaction of either firing
or not firing.
synapse - 🧠 ANSWER ✔✔the junction between the axon tip of the sending
neuron and the dendrite or cell body of the receiving neuron. The tiny gap
at this junction is called the synaptic gap or synaptic cleft.
neurotransmitters - 🧠 ANSWER ✔✔chemical messengers that cross the
synaptic gaps between neurons. When released by the sending neuron,
they travel across the synapse and bind to receptor sites on the receiving
