CBNS 120 Study Guide Questions With
Verified Answers
Cajal cused cthe c_____ cstain cto cprove cthe c_____ cDoctrine. c- ccorrect
canswers✔✔Golgi; cNeuron
Conductance cis cthe creciprocal cof: c- ccorrect canswers✔✔resistance
Hyperpolarization coccurs cwhen cthe cmembrane cpotential cbecomes cmore c_____ c,
cwhile cdepolarization ccauses cthe cmembrane cpotential cto cbecome cmore c_____ c. c-
ccorrect canswers✔✔negative; cpositive
Permeability cindicates cthe cpresence cof c_____ c. c- ccorrect canswers✔✔open
cchannels
Permeability cindicates cthe cpresence cof c_____ c, cwhile cconductance crequires c_____
cand c_____ c. c- ccorrect canswers✔✔open cchannels; cions; cpermeability
Categories cof cion cchannels cinclude cthose cactivated cby c_____ c, c_____ c, cand
c_____ c. c- ccorrect canswers✔✔ligands; cvoltage, cstretch
Conductance ccan cbe cdistinguished cfrom cpermeability cby cthe crequirement cfor c_____
c. c- ccorrect canswers✔✔charge ccarriers
The cmembrane cpotential cat cwhich cthe cdiffusional cforce ccreated cby can cion cgradient
cis cequal cand copposite cto cthe celectrical cforce cis ccalled cthe c_____ c. c- ccorrect
canswers✔✔equilibrium cpotential
The cdifference cbetween cthe cmembrane cpotential c(Vm) cand cthe cequilibrium cpotential
c(Ex) cfor cany cgiven cion cis ccalled c_____ c. c- ccorrect canswers✔✔driving cforce
When cthe cmagnitude cof ccurrent cflow cacross cthe cmembrane cin cone cdirection
cexceeds ccurrent cflow cin cthe copposite cdirection, cit cis ccalled c_____ c. c- ccorrect
canswers✔✔rectification
Ion cchannels cflux c(transfer) cions cacross cthe cmembrane cat crates cof c_____ c, c_____
c, c_____ c- ccorrect canswers✔✔10^7-10^8 cions/sec
In cthe cfigure cdepicted cbelow, ccurrent cis cplotted cas ca cfunction cof cvoltage. cTwo
clinear cI-V crelationships care cshown. cThe clines care cparallel. cThe cslope cof cline cA cis
cdefined cas c- ccorrect canswers✔✔conductance
, In cthe cfigure cdepicted cbelow, ccurrent cis cplotted cas ca cfunction cof cvoltage. cTwo
clinear cI-V crelationships care cshown. cThe clines care cparallel. cThe cslope cof cline cA cis
cdefined cas
In cthe cprevious cquestion, cthe cconductance cof cA cis c_____ cthe cconductance cof cB. c-
ccorrect canswers✔✔equal cto
In cthe cfigure cdepicted cbelow, ccurrent cis cplotted cas ca cfunction cof cvoltage. cTwo
clinear cI-V crelationships care cshown. cThe clines care cparallel. cThe cslope cof cline cA cis
cdefined cas
In cQuestion c12, cthe cequilibrium cpotential cof cI-V crelationship cA cis c_____ cmV cand
cthe cequilibrium cpotential cfor cB cis c_____ cmV. c- ccorrect canswers✔✔-75; c-50
In cthe cfigure cdepicted cbelow, cthe cconductance cof cA cis c_____ cthe cconductance cof
cB. c- ccorrect canswers✔✔greater cthan
Driving cForce cis: c- ccorrect canswers✔✔equals cthe cdifference cbetween cthe
cequilibrium cpotential c(Ex) cand cthe cmembrane cpotential c(Vm).
zero cwhen cthe cVm c= cEx
is crequired cfor ccurrent cto cflow cacross cthe cmembrane
Ion cchannel cactivity cis: c- ccorrect canswers✔✔Random
Stochastic
Probablistic
The cgraph cbelow cdisplays: c- ccorrect canswers✔✔Outward crectification
More ccurrent cflow cin cthe coutward cdirection
ATPases clike cthe cNa/K cPump ctransfer cions cacross cthe cmembrane cat crates cof c-
ccorrect canswers✔✔10^0-10^3 cions/sec
In cvoltage-gated cchannels, cthe cS4 ctransmembrane csegment cfunctions cas ca c_____
cand cthe cloop cbetween cS5 cand cS6 cfunctions cas cthe c_____ c. c- ccorrect
canswers✔✔voltage csensor; cP cregion
Ligands cthat cactivate cchannels cfrom cthe ccytoplasmic cside cof cthe cmembrane cinclude
c_____ cand c_____ c. c- ccorrect canswers✔✔cyclic cGMP; ccalcium
Verified Answers
Cajal cused cthe c_____ cstain cto cprove cthe c_____ cDoctrine. c- ccorrect
canswers✔✔Golgi; cNeuron
Conductance cis cthe creciprocal cof: c- ccorrect canswers✔✔resistance
Hyperpolarization coccurs cwhen cthe cmembrane cpotential cbecomes cmore c_____ c,
cwhile cdepolarization ccauses cthe cmembrane cpotential cto cbecome cmore c_____ c. c-
ccorrect canswers✔✔negative; cpositive
Permeability cindicates cthe cpresence cof c_____ c. c- ccorrect canswers✔✔open
cchannels
Permeability cindicates cthe cpresence cof c_____ c, cwhile cconductance crequires c_____
cand c_____ c. c- ccorrect canswers✔✔open cchannels; cions; cpermeability
Categories cof cion cchannels cinclude cthose cactivated cby c_____ c, c_____ c, cand
c_____ c. c- ccorrect canswers✔✔ligands; cvoltage, cstretch
Conductance ccan cbe cdistinguished cfrom cpermeability cby cthe crequirement cfor c_____
c. c- ccorrect canswers✔✔charge ccarriers
The cmembrane cpotential cat cwhich cthe cdiffusional cforce ccreated cby can cion cgradient
cis cequal cand copposite cto cthe celectrical cforce cis ccalled cthe c_____ c. c- ccorrect
canswers✔✔equilibrium cpotential
The cdifference cbetween cthe cmembrane cpotential c(Vm) cand cthe cequilibrium cpotential
c(Ex) cfor cany cgiven cion cis ccalled c_____ c. c- ccorrect canswers✔✔driving cforce
When cthe cmagnitude cof ccurrent cflow cacross cthe cmembrane cin cone cdirection
cexceeds ccurrent cflow cin cthe copposite cdirection, cit cis ccalled c_____ c. c- ccorrect
canswers✔✔rectification
Ion cchannels cflux c(transfer) cions cacross cthe cmembrane cat crates cof c_____ c, c_____
c, c_____ c- ccorrect canswers✔✔10^7-10^8 cions/sec
In cthe cfigure cdepicted cbelow, ccurrent cis cplotted cas ca cfunction cof cvoltage. cTwo
clinear cI-V crelationships care cshown. cThe clines care cparallel. cThe cslope cof cline cA cis
cdefined cas c- ccorrect canswers✔✔conductance
, In cthe cfigure cdepicted cbelow, ccurrent cis cplotted cas ca cfunction cof cvoltage. cTwo
clinear cI-V crelationships care cshown. cThe clines care cparallel. cThe cslope cof cline cA cis
cdefined cas
In cthe cprevious cquestion, cthe cconductance cof cA cis c_____ cthe cconductance cof cB. c-
ccorrect canswers✔✔equal cto
In cthe cfigure cdepicted cbelow, ccurrent cis cplotted cas ca cfunction cof cvoltage. cTwo
clinear cI-V crelationships care cshown. cThe clines care cparallel. cThe cslope cof cline cA cis
cdefined cas
In cQuestion c12, cthe cequilibrium cpotential cof cI-V crelationship cA cis c_____ cmV cand
cthe cequilibrium cpotential cfor cB cis c_____ cmV. c- ccorrect canswers✔✔-75; c-50
In cthe cfigure cdepicted cbelow, cthe cconductance cof cA cis c_____ cthe cconductance cof
cB. c- ccorrect canswers✔✔greater cthan
Driving cForce cis: c- ccorrect canswers✔✔equals cthe cdifference cbetween cthe
cequilibrium cpotential c(Ex) cand cthe cmembrane cpotential c(Vm).
zero cwhen cthe cVm c= cEx
is crequired cfor ccurrent cto cflow cacross cthe cmembrane
Ion cchannel cactivity cis: c- ccorrect canswers✔✔Random
Stochastic
Probablistic
The cgraph cbelow cdisplays: c- ccorrect canswers✔✔Outward crectification
More ccurrent cflow cin cthe coutward cdirection
ATPases clike cthe cNa/K cPump ctransfer cions cacross cthe cmembrane cat crates cof c-
ccorrect canswers✔✔10^0-10^3 cions/sec
In cvoltage-gated cchannels, cthe cS4 ctransmembrane csegment cfunctions cas ca c_____
cand cthe cloop cbetween cS5 cand cS6 cfunctions cas cthe c_____ c. c- ccorrect
canswers✔✔voltage csensor; cP cregion
Ligands cthat cactivate cchannels cfrom cthe ccytoplasmic cside cof cthe cmembrane cinclude
c_____ cand c_____ c. c- ccorrect canswers✔✔cyclic cGMP; ccalcium
