UMKC Bio 109 Exam 4 Study Guide
Questions and Answers 100% Pass
Which one of the following is not an advantage of chemical messengers over electrical
signals? - ✔✔Chemical molecules initiate faster responses.
In this type of signaling, secreted molecules diffuse into the bloodstream and trigger
responses in target cells anywhere in the body. - ✔✔endocrine
A cell with membrane-bound proteins that selectively bind a specific hormone is called
that hormone's _____ - ✔✔target cell
The steroid hormone that stimulates molting in arthropods is _____. - ✔✔ecdysteroid
A form of asexual reproduction in which the egg develops without being fertilized. -
✔✔parthenogenesis
Which of the following structures in females is analogous in function to the vas deferens
in males? - ✔✔oviduct
Connects the seminiferous tubules to the vas deferens - ✔✔epididymis
Ovulation is the follicular response to a burst of secretion of - ✔✔LH
The movement of the membrane potential from a value of -70 mV to a value of -80 mV
would be termed a(n) - ✔✔hyperpolarization
In a resting potential, an example of a cation that is more abundant as a solute in the
cytosol of a neuron than it is in the interstitial fluid outside the neuron is _____. - ✔✔K+
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, The transmission of an action potential (AP) typically requires the cell membrane of this
region of the neuron to reach threshold. - ✔✔axon hillock
In a simple synapse, neurotransmitter chemicals are released by the _____. -
✔✔presynaptic membrane
When two excitatory postsynaptic potentials (EPSPs) occur at a single synapse so
rapidly in succession that the postsynaptic neuron's membrane potential has not
returned to the resting potential before the second EPSP arrives, the EPSPs add together
producing _____. - ✔✔temporal summation
produce the myelin sheaths that surround axons in the PNS - ✔✔Schwann cells
myelinate axons in the CNS - ✔✔oligodendrocytes
immune cells in the CNS that protect against pathogens - ✔✔microglia
participate in formation of the blood-brain barrier - ✔✔astrocytes
Which system controls smooth and cardiac muscles of the digestive, cardiovascular,
and excretory systems? - ✔✔autonomic nervous system
Which area of the brain is most intimately associated with the unconscious control of
respiration and circulation? - ✔✔medulla oblongata
What do Wernicke's and Broca's regions of the brain affect? - ✔✔speech
If someone said to you that a particular hormone utilizes a cell surface receptor in its
signal transduction pathway, you would know that the hormone - ✔✔is water soluble
Steroid and peptide hormones typically have in common _____. - ✔✔their requirement
for travel through the bloodstream
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 2
Questions and Answers 100% Pass
Which one of the following is not an advantage of chemical messengers over electrical
signals? - ✔✔Chemical molecules initiate faster responses.
In this type of signaling, secreted molecules diffuse into the bloodstream and trigger
responses in target cells anywhere in the body. - ✔✔endocrine
A cell with membrane-bound proteins that selectively bind a specific hormone is called
that hormone's _____ - ✔✔target cell
The steroid hormone that stimulates molting in arthropods is _____. - ✔✔ecdysteroid
A form of asexual reproduction in which the egg develops without being fertilized. -
✔✔parthenogenesis
Which of the following structures in females is analogous in function to the vas deferens
in males? - ✔✔oviduct
Connects the seminiferous tubules to the vas deferens - ✔✔epididymis
Ovulation is the follicular response to a burst of secretion of - ✔✔LH
The movement of the membrane potential from a value of -70 mV to a value of -80 mV
would be termed a(n) - ✔✔hyperpolarization
In a resting potential, an example of a cation that is more abundant as a solute in the
cytosol of a neuron than it is in the interstitial fluid outside the neuron is _____. - ✔✔K+
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 1
, The transmission of an action potential (AP) typically requires the cell membrane of this
region of the neuron to reach threshold. - ✔✔axon hillock
In a simple synapse, neurotransmitter chemicals are released by the _____. -
✔✔presynaptic membrane
When two excitatory postsynaptic potentials (EPSPs) occur at a single synapse so
rapidly in succession that the postsynaptic neuron's membrane potential has not
returned to the resting potential before the second EPSP arrives, the EPSPs add together
producing _____. - ✔✔temporal summation
produce the myelin sheaths that surround axons in the PNS - ✔✔Schwann cells
myelinate axons in the CNS - ✔✔oligodendrocytes
immune cells in the CNS that protect against pathogens - ✔✔microglia
participate in formation of the blood-brain barrier - ✔✔astrocytes
Which system controls smooth and cardiac muscles of the digestive, cardiovascular,
and excretory systems? - ✔✔autonomic nervous system
Which area of the brain is most intimately associated with the unconscious control of
respiration and circulation? - ✔✔medulla oblongata
What do Wernicke's and Broca's regions of the brain affect? - ✔✔speech
If someone said to you that a particular hormone utilizes a cell surface receptor in its
signal transduction pathway, you would know that the hormone - ✔✔is water soluble
Steroid and peptide hormones typically have in common _____. - ✔✔their requirement
for travel through the bloodstream
© EMILY CHARLENE YEAR 2025-2026, ALL RIGHTS RESERVED 2
