NEUROSCIENCE EXAM PRACTICE
TEST GUIDE QUESTIONS WITH
COMPLETE ANSWERS
Oligodendrocytes and Schwann cells differ in what way:
a) Oligodendrocytes are found in the central nervous system, whereas Schwann
cells are found in the peripheral nervous system.
b) Oligodendrocytes are myelinating glia, whereas Schwann cells are microglia
c) One oligodendrocyte will surround one axon, whereas each Schwann cell affiliates
with several axons. d) Oligodendrocytes form nodes of Ranvier, while Schwann cells
do not. - Answer-a) Oligodendrocytes are found in the central nervous system,
whereas Schwann cells are found in the peripheral nervous system.
A guy got fired from your lab for not keeping his notebook up to date. Your job is to
analyze the slides he prepared. Under the microscope you see scattered, beautiful,
fully labeled neurons. You conclude that he used:
a) a nissl stain
b) a golgi stain
c) a cajal stain
d) a professor Stein - Answer-b) a golgi stain
What is Axoplasmic transport? - Answer-Axoplasmic transport
• no rough endoplasmic reticulum in axon; proteins are transported from the cell
body • movement of material up or down axon is known as axoplasmic transport
• material enclosed in vesicles, "walked down" microtubules
• proteins involved
o kinesin for anterograde transport (soma axon)
o dynein for retrograde transport (axon soma)
• ATP is used
Ion X is negatively charged and more concentrated inside than outside of the cell.
Therefore:
(a) Ex is negative
(b) EX is positive
(c) EX is zero
(d) The cell will fail its Olympic drug test - Answer-(b) EX is positive
The resting membrane potential is closer to EK than ENa because at rest:
(a) Vm - ENa = 0
(b) gNa = 0
(c) gK >> gNa
(d) gK = 0 - Answer-(c) gK >> gNa
, You discover an ion channel that, when open, is permeable to all ions. This channel
lacks:
(a) gating
(b) quaternary structure
(c) selectivity
(d) an alpha subunit - Answer-(c) selectivity
Dendrites differ from axons because:
a) Dendrites are uniform in diameter whereas axons taper
b) Axons can have spines or be smooth, whereas dendrites always have spines.
c) On average, dendrites are shorter in length whereas axons are longer
d) Axons can be postsynaptic surfaces whereas dendrites cannot - Answer-c) On
average, dendrites are shorter in length whereas axons are longer
All of the following statements about dendrites are generally true EXCEPT:
a) they range from millimeters to meters in length
b) there are many extending from a single soma
c) they taper from one end to the other
d) they are often spiny - Answer-a) they range from millimeters to meters in length
Which of the following is TRUE about axons?
a) They are only found in neurons
b) They contain rough ER so proteins can be synthesized
throughout their length
c) You can show retrograde transport of proteins in axons by
injecting a cell's soma with radioactive amino acids.
d) A & B are true - Answer-a) They are only found in neurons
There are two types of neurites: axons and dendrites. Which of the following is true
about these neurites?: a) Dendrites are relatively short in length (about 2mm), have
a uniform diameter along their entire length, and act as the antennae of the neuron
to receive incoming signals or input.
b) Axons are relatively long (can be over a meter), if they branch at all, they do so at
right angles, and act like "wires" that carry the output of the neurons.
c) The power of the Golgi stain is that, unlike the Nissl stain, it reveals the elaborate
dendritic structure of the neuron; nevertheless, neither stain fills the axon.
d) ALL OF THE ABOVE ARE TRUE - Answer-b) Axons are relatively long (can be
over a meter), if they branch at all, they do so at right angles, and act like "wires" that
carry the output of the neurons.
While traveling around the human body, you run into Sheriff Nosore, Herpes Fighter.
He is chasing the herpes virus from the soma to the axon terminal bouton. Which
direction and mechanism does he use.
TEST GUIDE QUESTIONS WITH
COMPLETE ANSWERS
Oligodendrocytes and Schwann cells differ in what way:
a) Oligodendrocytes are found in the central nervous system, whereas Schwann
cells are found in the peripheral nervous system.
b) Oligodendrocytes are myelinating glia, whereas Schwann cells are microglia
c) One oligodendrocyte will surround one axon, whereas each Schwann cell affiliates
with several axons. d) Oligodendrocytes form nodes of Ranvier, while Schwann cells
do not. - Answer-a) Oligodendrocytes are found in the central nervous system,
whereas Schwann cells are found in the peripheral nervous system.
A guy got fired from your lab for not keeping his notebook up to date. Your job is to
analyze the slides he prepared. Under the microscope you see scattered, beautiful,
fully labeled neurons. You conclude that he used:
a) a nissl stain
b) a golgi stain
c) a cajal stain
d) a professor Stein - Answer-b) a golgi stain
What is Axoplasmic transport? - Answer-Axoplasmic transport
• no rough endoplasmic reticulum in axon; proteins are transported from the cell
body • movement of material up or down axon is known as axoplasmic transport
• material enclosed in vesicles, "walked down" microtubules
• proteins involved
o kinesin for anterograde transport (soma axon)
o dynein for retrograde transport (axon soma)
• ATP is used
Ion X is negatively charged and more concentrated inside than outside of the cell.
Therefore:
(a) Ex is negative
(b) EX is positive
(c) EX is zero
(d) The cell will fail its Olympic drug test - Answer-(b) EX is positive
The resting membrane potential is closer to EK than ENa because at rest:
(a) Vm - ENa = 0
(b) gNa = 0
(c) gK >> gNa
(d) gK = 0 - Answer-(c) gK >> gNa
, You discover an ion channel that, when open, is permeable to all ions. This channel
lacks:
(a) gating
(b) quaternary structure
(c) selectivity
(d) an alpha subunit - Answer-(c) selectivity
Dendrites differ from axons because:
a) Dendrites are uniform in diameter whereas axons taper
b) Axons can have spines or be smooth, whereas dendrites always have spines.
c) On average, dendrites are shorter in length whereas axons are longer
d) Axons can be postsynaptic surfaces whereas dendrites cannot - Answer-c) On
average, dendrites are shorter in length whereas axons are longer
All of the following statements about dendrites are generally true EXCEPT:
a) they range from millimeters to meters in length
b) there are many extending from a single soma
c) they taper from one end to the other
d) they are often spiny - Answer-a) they range from millimeters to meters in length
Which of the following is TRUE about axons?
a) They are only found in neurons
b) They contain rough ER so proteins can be synthesized
throughout their length
c) You can show retrograde transport of proteins in axons by
injecting a cell's soma with radioactive amino acids.
d) A & B are true - Answer-a) They are only found in neurons
There are two types of neurites: axons and dendrites. Which of the following is true
about these neurites?: a) Dendrites are relatively short in length (about 2mm), have
a uniform diameter along their entire length, and act as the antennae of the neuron
to receive incoming signals or input.
b) Axons are relatively long (can be over a meter), if they branch at all, they do so at
right angles, and act like "wires" that carry the output of the neurons.
c) The power of the Golgi stain is that, unlike the Nissl stain, it reveals the elaborate
dendritic structure of the neuron; nevertheless, neither stain fills the axon.
d) ALL OF THE ABOVE ARE TRUE - Answer-b) Axons are relatively long (can be
over a meter), if they branch at all, they do so at right angles, and act like "wires" that
carry the output of the neurons.
While traveling around the human body, you run into Sheriff Nosore, Herpes Fighter.
He is chasing the herpes virus from the soma to the axon terminal bouton. Which
direction and mechanism does he use.
