WSU Biology 251 Exam 1 EXAM, QUESTIONS
WITH ACCURATE ANSWERS | MULTIPLE
CHOICES |2025\2026!!
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Which of the following d.) The primary mechanism to maintain homeostasis is
statements about positive feedback
homeostasis is FALSE?
a.) Homeostasis is the
maintenance of the
internal environment
b.) The organ systems
work together to maintain
homeostasis
c.) Illness can result if
homeostasis is disrupted
d.) The primary mechanism
to maintain homeostasis is
positive feedback
e.) The extracellular fluid is
maintained in a state
compatible for life
What type of cell oligodendrocyte
produces myelin sheaths
around axons of neurons
in the central nervous
system?
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, 9/24/25, 3:38 PM WSU Biology 251 Exam 1 EXAM, QUESTIONS WITH ACCURATE ANSWERS | MULTIPLE CHOICES |2025\2026!! Flashcards | Q…
In a neuron, where are axon termnial
voltage-gated calcium
channels located?
The body fluid intracellular fluid
compartment with a high
potassium and protein
concentration is _________.
In most homeostasis sensor; integrating; center; effector
mechanisms, a ________
detects a change in a
regulated variable and
sends that information to
a(n) _________ which relays
signals to a(n) _________.
The function of a second amplify the response of the first messenger
messenger system is to
Parasympathetic acetylcholine; acetylcholine
preganglionic neurons
release the
neurotransmitter _______;
sympathetic preganglionic
neurons release the
neurotransmitter ______.
The electrochemical inward; positive
gradient for sodium across
the membrane is such that
the net flux for sodium
movement is directed
________, thereby causing the
cell's membrane potential
to become more _______.
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