BIOA)@ MODULE 2 EXAM QUESTIONS
WITH CORRECT AND VERIFIED ANSWERS
The zAugust zKrogh zPrinciple zstates: z- zCORRECT✅✅For zevery zquestion zin zbiology
zthere zis zan zideal zmodel zsystem.
Which zof zthe zfollowing zmost zaccurately zdescribes zthe zcomponents zof zthe zefferent
znervous zsystem? z- zCORRECT✅✅It zconsists zof zthe zsomatic znervous zsystem zand
zthe zautonomic znervous zsystem.
The zdiagram zbelow zrepresents za zstage zof zan zaction zpotential ztravelling zdown zan
zaxon. zAt zthe zpoint zindicated zby zthe zarrow, zwhat zis zthe zopen zor zclosed zstatus zof
zthe zsodium zchannel's zactivation zand zinactivation zgates? z-
zCORRECT✅✅Activation zgate zis zopen; zInactivation zgate zis zclosed
During zwhich zphase zof zan zaction zpotential zdoes zsodium zmove zinto za zneuron? z-
zCORRECT✅✅Depolarization
(as zlong zas zits zabove zthreshold zits zopen)
Which zof zthe zfollowing zis z(or zare) zresponsible zfor zthe zabsolute zrefractory zperiod zin
za zneuron? z- zCORRECT✅✅1) zDuring zthe zdepolarisation zphase zof zan zAP, zthe
zopening zof zNa+ zchannels zhas zalready zbeen zset zin zmotion zand zcannot zbe zaffected
zby za zsecond zstimulus.
2) zDuring zthe zrepolarisation zphase zof zan zAP, zthe zNa zchannel zinactivation zgate zis
zclosed zand zcannot zbe zopened zby za zsecond zstimulus.
Adrenaline zand znoradrenaline z(epinephrine zand znorepinephrine) zare zexamples zof
zwhat ztype zof zhormone? z- zCORRECT✅✅Amines
Which zof zthe zfollowing zis znot za zfunction zof zcalcitonin? z- zCORRECT✅✅It
zdecreases zcalcium zuptake zin zthe zintestines.
Which ztwo zglands zrelease zhormones zthat zare zinvolved zin zblood zglucose
zregulation? z- zCORRECT✅✅The zadrenal zgland zand zthe zpancreas
The zregulatory zprotein ztroponin zbinds zwhich zof zthe zfollowing? z-
zCORRECT✅✅Actin, ztropomyosin zand zCa2+
Which zof zthe zfollowing zis zrequired zto zprevent zmuscle zfrom zremaining zin za zstate zof
zrigor? z- zCORRECT✅✅The zbinding zof zATP zto zthe zATPase zsite zon zmyosin.
The zpattern zof zmuscle zcontraction zshown zillustrates zwhich zof zthe zfollowing? z-
zCORRECT✅✅Twitch zsummation
WITH CORRECT AND VERIFIED ANSWERS
The zAugust zKrogh zPrinciple zstates: z- zCORRECT✅✅For zevery zquestion zin zbiology
zthere zis zan zideal zmodel zsystem.
Which zof zthe zfollowing zmost zaccurately zdescribes zthe zcomponents zof zthe zefferent
znervous zsystem? z- zCORRECT✅✅It zconsists zof zthe zsomatic znervous zsystem zand
zthe zautonomic znervous zsystem.
The zdiagram zbelow zrepresents za zstage zof zan zaction zpotential ztravelling zdown zan
zaxon. zAt zthe zpoint zindicated zby zthe zarrow, zwhat zis zthe zopen zor zclosed zstatus zof
zthe zsodium zchannel's zactivation zand zinactivation zgates? z-
zCORRECT✅✅Activation zgate zis zopen; zInactivation zgate zis zclosed
During zwhich zphase zof zan zaction zpotential zdoes zsodium zmove zinto za zneuron? z-
zCORRECT✅✅Depolarization
(as zlong zas zits zabove zthreshold zits zopen)
Which zof zthe zfollowing zis z(or zare) zresponsible zfor zthe zabsolute zrefractory zperiod zin
za zneuron? z- zCORRECT✅✅1) zDuring zthe zdepolarisation zphase zof zan zAP, zthe
zopening zof zNa+ zchannels zhas zalready zbeen zset zin zmotion zand zcannot zbe zaffected
zby za zsecond zstimulus.
2) zDuring zthe zrepolarisation zphase zof zan zAP, zthe zNa zchannel zinactivation zgate zis
zclosed zand zcannot zbe zopened zby za zsecond zstimulus.
Adrenaline zand znoradrenaline z(epinephrine zand znorepinephrine) zare zexamples zof
zwhat ztype zof zhormone? z- zCORRECT✅✅Amines
Which zof zthe zfollowing zis znot za zfunction zof zcalcitonin? z- zCORRECT✅✅It
zdecreases zcalcium zuptake zin zthe zintestines.
Which ztwo zglands zrelease zhormones zthat zare zinvolved zin zblood zglucose
zregulation? z- zCORRECT✅✅The zadrenal zgland zand zthe zpancreas
The zregulatory zprotein ztroponin zbinds zwhich zof zthe zfollowing? z-
zCORRECT✅✅Actin, ztropomyosin zand zCa2+
Which zof zthe zfollowing zis zrequired zto zprevent zmuscle zfrom zremaining zin za zstate zof
zrigor? z- zCORRECT✅✅The zbinding zof zATP zto zthe zATPase zsite zon zmyosin.
The zpattern zof zmuscle zcontraction zshown zillustrates zwhich zof zthe zfollowing? z-
zCORRECT✅✅Twitch zsummation
