KINE 2P09 PRACTICE QUESTIONS WITH
CORRECT AND VERIFIED ANSWERS
which dof dthese din dthese dstructures dis dfound din dthe dthick dfilament dof dskeletal
dmuslce d
a) dcalmodulin
b) dhemoglobin
c) dmyosin
d) dactin d- dCORRECT✅✅c) dmyosin
which dof dthese dstructures din dskeletal dmuscle dfibres dis dcritical dfor dcarrying dan
daction dpotential dfrom dthe dsurface dinto dthe dinferior dof da dmuscle dfibre?
a) dtransverse dtubules d(T-tubules)
b) dsarcoplasmic dreticulum d
c) dconducting dsystem
d) dalpha dmotor dneuron d- dCORRECT✅✅a) dt-tubules
A dmotor dunit ddescribes:
a) dthe dmuscle dfibre dand dall dof dthe dmotor dneurons dinnervating dit
b) da dmotor dneuron dand dall dof dthe dmuscle dfibres dit dinnervates
c) dthe dsite dbetween dthe dmotor dneuron dand dthe dmuscle dfibre
d) dnone dof dthe dabove d- dCORRECT✅✅b) da dmotor dneuron dand dall dof dthe dmuscle
dfibres dit dinnervates
which doccurs dwhen dcalcium dconcentration din dthe dskeletal dmuscle dfibre dincreases
a) dtropomyosin dblocks dmyosin dfrom dbinding dactin
b) dtroponin dremains din dthe dblocking dposition dpreventing dmyosin dfrom dbinding dactin
d
c) dcellular dATP dlevels ddrop
d) dmyosin dcross-bridges dbind dto dactin d- dCORRECT✅✅d) dmyosin dcross-bridges
dbind dto dactin
what dis dthe denergy dsource dthat dthe dskeletal dmuscle dfibre duses dto d'energize' dthe
dmyosin dcross dbridge dto dsupport dthe dpower dstroke?
a) dcalcium
b) daction dpotentials d
c) dtetanus d
d) dATP d- dCORRECT✅✅d) dATP
which dof dthe dfollowing dstatements dregarding dcontraction din dsmooth dmuscle dis
dTRUE?
a) din dsmooth dmuscle, dcalcium dbinds ddirectly dto dmyosin
b) din dsmooth dmuscle, dcalcium dbinds dto da dregulatory dprotein don dthick dfilaments d
CORRECT AND VERIFIED ANSWERS
which dof dthese din dthese dstructures dis dfound din dthe dthick dfilament dof dskeletal
dmuslce d
a) dcalmodulin
b) dhemoglobin
c) dmyosin
d) dactin d- dCORRECT✅✅c) dmyosin
which dof dthese dstructures din dskeletal dmuscle dfibres dis dcritical dfor dcarrying dan
daction dpotential dfrom dthe dsurface dinto dthe dinferior dof da dmuscle dfibre?
a) dtransverse dtubules d(T-tubules)
b) dsarcoplasmic dreticulum d
c) dconducting dsystem
d) dalpha dmotor dneuron d- dCORRECT✅✅a) dt-tubules
A dmotor dunit ddescribes:
a) dthe dmuscle dfibre dand dall dof dthe dmotor dneurons dinnervating dit
b) da dmotor dneuron dand dall dof dthe dmuscle dfibres dit dinnervates
c) dthe dsite dbetween dthe dmotor dneuron dand dthe dmuscle dfibre
d) dnone dof dthe dabove d- dCORRECT✅✅b) da dmotor dneuron dand dall dof dthe dmuscle
dfibres dit dinnervates
which doccurs dwhen dcalcium dconcentration din dthe dskeletal dmuscle dfibre dincreases
a) dtropomyosin dblocks dmyosin dfrom dbinding dactin
b) dtroponin dremains din dthe dblocking dposition dpreventing dmyosin dfrom dbinding dactin
d
c) dcellular dATP dlevels ddrop
d) dmyosin dcross-bridges dbind dto dactin d- dCORRECT✅✅d) dmyosin dcross-bridges
dbind dto dactin
what dis dthe denergy dsource dthat dthe dskeletal dmuscle dfibre duses dto d'energize' dthe
dmyosin dcross dbridge dto dsupport dthe dpower dstroke?
a) dcalcium
b) daction dpotentials d
c) dtetanus d
d) dATP d- dCORRECT✅✅d) dATP
which dof dthe dfollowing dstatements dregarding dcontraction din dsmooth dmuscle dis
dTRUE?
a) din dsmooth dmuscle, dcalcium dbinds ddirectly dto dmyosin
b) din dsmooth dmuscle, dcalcium dbinds dto da dregulatory dprotein don dthick dfilaments d
