CBNS 120 QUIZ 2 QUESTIONS WITH VERIFIED
ANSWERS
Correct 122
Incorrect 00
1 of 122
Definition
dephosphorylation
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In Na-K ATPase ion
A decrease in membrane potential, or
translocation, K+ binding leads
reduced charge separation is called
to
In Na-K ATPase ion translocation,
Ouabain comes from the _________
dephosphorylation is followed by
Don't know?
2 of 122
,Term
Voltage clamp recordings on the giant squid axon revealed 2 different
voltages:
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all or none, propagated without
a return to the starting conformation
amplitude decrement
Na+ channels ; rising phase / early inward current and late
depolarization outward current
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3 of 122
Definition
1 / interval between spikes
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Spike transduction is Spike frequency is
Permeability changes occur because
capacitative currents are
of
, Don't know?
4 of 122
Definition
ATP hydrolysis
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Julius Bernstein suggested that _________ A decrease in membrane potential, or
open up during an AP reduced charge separation is called
Characteristics of Na+/K+ pump
Typical Em in neurons is about ____
in nerve and muscle: energy
inside
comes from
Don't know?
5 of 122
Term
Depolarization opens ____ and causes _______
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, Na+ channels ; rising phase / open at rest and non selective ; K+
depolarization and Na+
an amplitude that does not decline
reduction of the depolarization
with distance, unlike an electrotonic
required to reach AP threshold
or passive potential
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6 of 122
Term
Potential difference between electrical potentials is called the
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Na+ leaking into the cell membrane potential (Em or Vm)
directly ; charge separation inward Na+ leak ; resting potentials
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7 of 122
Definition
decreased proportionally
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ANSWERS
Correct 122
Incorrect 00
1 of 122
Definition
dephosphorylation
Give this one a try later!
In Na-K ATPase ion
A decrease in membrane potential, or
translocation, K+ binding leads
reduced charge separation is called
to
In Na-K ATPase ion translocation,
Ouabain comes from the _________
dephosphorylation is followed by
Don't know?
2 of 122
,Term
Voltage clamp recordings on the giant squid axon revealed 2 different
voltages:
Give this one a try later!
all or none, propagated without
a return to the starting conformation
amplitude decrement
Na+ channels ; rising phase / early inward current and late
depolarization outward current
Don't know?
3 of 122
Definition
1 / interval between spikes
Give this one a try later!
Spike transduction is Spike frequency is
Permeability changes occur because
capacitative currents are
of
, Don't know?
4 of 122
Definition
ATP hydrolysis
Give this one a try later!
Julius Bernstein suggested that _________ A decrease in membrane potential, or
open up during an AP reduced charge separation is called
Characteristics of Na+/K+ pump
Typical Em in neurons is about ____
in nerve and muscle: energy
inside
comes from
Don't know?
5 of 122
Term
Depolarization opens ____ and causes _______
Give this one a try later!
, Na+ channels ; rising phase / open at rest and non selective ; K+
depolarization and Na+
an amplitude that does not decline
reduction of the depolarization
with distance, unlike an electrotonic
required to reach AP threshold
or passive potential
Don't know?
6 of 122
Term
Potential difference between electrical potentials is called the
Give this one a try later!
Na+ leaking into the cell membrane potential (Em or Vm)
directly ; charge separation inward Na+ leak ; resting potentials
Don't know?
7 of 122
Definition
decreased proportionally
Give this one a try later!
