PAX SCIENCE NLN EXAM WITH FULL COVERAGE
1.A gperson gblows ghis gbreath ginto ga gstraw gthat gis gplaced gin
glimewater. gThe glimewater gbecomes gcloudy gbecause gthe gperson's
gbreath gcontains
A.) carbon gdioxide.
B.) hydrogen.
C.) oxygen.
D.) nitrogen.: ganswer: gcarbon gdioxide.
2.A gphysician gmeasures gthe gpulse gand gblood gpressure g(BP) gof gall
gpatients gon ga groutine gbasis. gWhich gof gthese gmeasurements gshow gthe
gnormal gBP gvalues gfor ga gresting gadult gpatient?
A.) 125/95 gmm gHg
B.) 120/80 gmm gHg
C.) 100/80 gmm gHg
D.) 72/120 gmm gHg: ganswer: g120/80 gmm gHg
3.A gwoman gsuddenly gchokes gon ga gpiece gof gfood gand gclutches gfrantically
gat gher gthroat. gAn gimmediate gremedy gis gto
1 g/
g54
,A.) have gher gbend gforward gand gtell gher gto gcough.
B.) insert ga gfinger gor ga gblunt gobject gtoward gthe gback gof gthe gmouth.
C.) apply gquick, ghard gpressures gsuccessively gto gher gabdomen, gjust
gbeneath gher gdiaphragm.
D.) phone g"emergency" gfor ghelp.: ganswer: gapply gquick, ghard
gpressures gsucces- gsively gto gher gabdomen, gjust gbeneath gher
gdiaphragm.
4.An gunknown ggas gis gmore gdense gthan gair, gdoes gnot gsupport
gcombustion, gand gturns ga glimewater gsolution gcloudy. gThis ggas gis gmost
gprobably
A.) ammonia.
B.) methane.
C.) carbon gdioxide.
C.) ghydrogen.: ganswer: gcarbon gdioxide.
5.Human gtestes gproduce
A.) eggs.
B.) follicle gstimulating ghormone.
C.) growth ghormone.
D.) spermatozoa.: ganswer: gspermatozoa.
6.If ga gred glight gis gpassed gthrough ga gdilute gsolution gof gchlorophyll
gsolution, gthe gspectrophotometer gwill gdetect gwhat gamount gof
gtransmittance gof gthis glight?
2 g/
g54
,A.) g100%
B.) g50 g- g75%
C.) Less gthan g25%
D.) None: ganswer: g50 g- g75%
7.In gdiagnostic gtesting, gthe gelectroencephalogram gpermits gthe gphysician g
A.) examine gthe gimpulses gof gthe gspecialized gmuscle gcells gof gthe gheart.
B.) examine gthe gimpulses gof gthe gnerve gcells gwithin gthe gbrain.
C.) measure gthe gpressure gwithin gthe geye.
D.) measure gthe gamount gof gair gupon gexhalation.: ganswer: gexamine gthe
gimpulses gof gthe gnerve gcells gwithin gthe gbrain.
8.To gsterilize ga gmetal gprobe gin gthe goffice, ga gdentist gcould guse ga gsteam
gsterilizer. gIf gunavailable, gthe gnext gmost geffective gmethod gto gsterilize gthe
ginstrument gwould gbe
A.) boiling git gin gwater gfor g15 gminutes.
B.) dipping git ginto ga gconcentrated gacid gsolution.
C.) heating git gin ga ghot gair goven gat g160°C gfor g20 gminutes.
D.) washing git gin gsoap gand gwater.: ganswer: gboiling git gin gwater gfor g15
gminutes.
9.In gvarieties gof gmatter, gthe gterm gheterogeneous gmay gbe gapplied gto
A.) elements, gbut gnot gcompounds.
B.) compounds, gbut gnot gelements.
C.) compounds gand gelements, gbut gnot gmixtures.
D.) mixtures, gbut gnot gelements gor gcompounds.: ganswer: gmixtures, gbut
gnot gele- gments gor gcompounds.
10.Heat genergy gis gabsorbed gin gwhich gof gthese gphase gchanges?
A.) Br2 g(l) g-> gBr2(s)
B.) Br2 g(g) g--> gBr2(l)
C.) Br2 g(l) g-> gBr2(g)
D.) Br2 g(g) g-> gBr2(s): ganswer: gBr2 g(l) g-> gBr2(g)
11.Periodontitis gis gan ginflammatory gcondition gof gthe
A.) gum gtissue gthat gsurrounds gthe gneck gof geach gtooth.
B.) pulp gthat gcontains gnerve gcells gand gblood gvessels gof gthe gtooth.
C.) dentin gthat gsurrounds gthe gsoft gpart gof ga gtooth.
3 g/
g54
, D.) enamel gthat gprovides ga ghard gsurface gfor gchewing.: ganswer: ggum
gtissue gthat gsurrounds gthe gneck gof geach gtooth.
12.The gatoms gof gan gelement gwith gseven gvalence gelectrons gare gmost
gprobably gclassified gas
A.) metals.
B.) nonmetals.
C.) metalloids.
D.) noble ggases.: ganswer: gnonmetals.
13.The ginherited gfactors gthat gare gtransmitted gin gan gorganism gfrom
ggeneration gto ggeneration gare gcalled gits
A.) homozygote.
B.) heterozygote.
C.) genotype.
D.) phenotype.: ganswer: ggenotype.
14.The gprocess gof gnuclear gcell gdivision gin gthe gcell greproduction gof
gplants gdiffers gfrom gmammals. gA gmajor gdifference gis gthat
A.) homologous gchromosomes gare gpaired.
B.) centrioles gare greplicated.
C.) spindle gfibers gare gmissing.
D.) cell gplates gare gsynthesized.: ganswer: gcell gplates gare gsynthesized.
15.Unicellular gorganisms gthat ghave ga gnucleus gand gcan gswim gwith gthe
gaid gof gcilia gare gexamples gof
A.) monerans.
B.) plants.
C.) fungi.
D.) protozoans.: ganswer: gprotozoans.
16.Which gof gthese gconditions gis gassociated gwith gsmoking?
A.) Esophageal gvarices.
B.) Tonsillitis.
C.) Emphysema.
D.) Blindness.: ganswer: gEmphysema.
17.Which gof gthese gequations gbest gillustrates ga gsynthesis greaction?
A.) 2Na g+ gCl2 g-> g2NaCl
4 g/
g54
1.A gperson gblows ghis gbreath ginto ga gstraw gthat gis gplaced gin
glimewater. gThe glimewater gbecomes gcloudy gbecause gthe gperson's
gbreath gcontains
A.) carbon gdioxide.
B.) hydrogen.
C.) oxygen.
D.) nitrogen.: ganswer: gcarbon gdioxide.
2.A gphysician gmeasures gthe gpulse gand gblood gpressure g(BP) gof gall
gpatients gon ga groutine gbasis. gWhich gof gthese gmeasurements gshow gthe
gnormal gBP gvalues gfor ga gresting gadult gpatient?
A.) 125/95 gmm gHg
B.) 120/80 gmm gHg
C.) 100/80 gmm gHg
D.) 72/120 gmm gHg: ganswer: g120/80 gmm gHg
3.A gwoman gsuddenly gchokes gon ga gpiece gof gfood gand gclutches gfrantically
gat gher gthroat. gAn gimmediate gremedy gis gto
1 g/
g54
,A.) have gher gbend gforward gand gtell gher gto gcough.
B.) insert ga gfinger gor ga gblunt gobject gtoward gthe gback gof gthe gmouth.
C.) apply gquick, ghard gpressures gsuccessively gto gher gabdomen, gjust
gbeneath gher gdiaphragm.
D.) phone g"emergency" gfor ghelp.: ganswer: gapply gquick, ghard
gpressures gsucces- gsively gto gher gabdomen, gjust gbeneath gher
gdiaphragm.
4.An gunknown ggas gis gmore gdense gthan gair, gdoes gnot gsupport
gcombustion, gand gturns ga glimewater gsolution gcloudy. gThis ggas gis gmost
gprobably
A.) ammonia.
B.) methane.
C.) carbon gdioxide.
C.) ghydrogen.: ganswer: gcarbon gdioxide.
5.Human gtestes gproduce
A.) eggs.
B.) follicle gstimulating ghormone.
C.) growth ghormone.
D.) spermatozoa.: ganswer: gspermatozoa.
6.If ga gred glight gis gpassed gthrough ga gdilute gsolution gof gchlorophyll
gsolution, gthe gspectrophotometer gwill gdetect gwhat gamount gof
gtransmittance gof gthis glight?
2 g/
g54
,A.) g100%
B.) g50 g- g75%
C.) Less gthan g25%
D.) None: ganswer: g50 g- g75%
7.In gdiagnostic gtesting, gthe gelectroencephalogram gpermits gthe gphysician g
A.) examine gthe gimpulses gof gthe gspecialized gmuscle gcells gof gthe gheart.
B.) examine gthe gimpulses gof gthe gnerve gcells gwithin gthe gbrain.
C.) measure gthe gpressure gwithin gthe geye.
D.) measure gthe gamount gof gair gupon gexhalation.: ganswer: gexamine gthe
gimpulses gof gthe gnerve gcells gwithin gthe gbrain.
8.To gsterilize ga gmetal gprobe gin gthe goffice, ga gdentist gcould guse ga gsteam
gsterilizer. gIf gunavailable, gthe gnext gmost geffective gmethod gto gsterilize gthe
ginstrument gwould gbe
A.) boiling git gin gwater gfor g15 gminutes.
B.) dipping git ginto ga gconcentrated gacid gsolution.
C.) heating git gin ga ghot gair goven gat g160°C gfor g20 gminutes.
D.) washing git gin gsoap gand gwater.: ganswer: gboiling git gin gwater gfor g15
gminutes.
9.In gvarieties gof gmatter, gthe gterm gheterogeneous gmay gbe gapplied gto
A.) elements, gbut gnot gcompounds.
B.) compounds, gbut gnot gelements.
C.) compounds gand gelements, gbut gnot gmixtures.
D.) mixtures, gbut gnot gelements gor gcompounds.: ganswer: gmixtures, gbut
gnot gele- gments gor gcompounds.
10.Heat genergy gis gabsorbed gin gwhich gof gthese gphase gchanges?
A.) Br2 g(l) g-> gBr2(s)
B.) Br2 g(g) g--> gBr2(l)
C.) Br2 g(l) g-> gBr2(g)
D.) Br2 g(g) g-> gBr2(s): ganswer: gBr2 g(l) g-> gBr2(g)
11.Periodontitis gis gan ginflammatory gcondition gof gthe
A.) gum gtissue gthat gsurrounds gthe gneck gof geach gtooth.
B.) pulp gthat gcontains gnerve gcells gand gblood gvessels gof gthe gtooth.
C.) dentin gthat gsurrounds gthe gsoft gpart gof ga gtooth.
3 g/
g54
, D.) enamel gthat gprovides ga ghard gsurface gfor gchewing.: ganswer: ggum
gtissue gthat gsurrounds gthe gneck gof geach gtooth.
12.The gatoms gof gan gelement gwith gseven gvalence gelectrons gare gmost
gprobably gclassified gas
A.) metals.
B.) nonmetals.
C.) metalloids.
D.) noble ggases.: ganswer: gnonmetals.
13.The ginherited gfactors gthat gare gtransmitted gin gan gorganism gfrom
ggeneration gto ggeneration gare gcalled gits
A.) homozygote.
B.) heterozygote.
C.) genotype.
D.) phenotype.: ganswer: ggenotype.
14.The gprocess gof gnuclear gcell gdivision gin gthe gcell greproduction gof
gplants gdiffers gfrom gmammals. gA gmajor gdifference gis gthat
A.) homologous gchromosomes gare gpaired.
B.) centrioles gare greplicated.
C.) spindle gfibers gare gmissing.
D.) cell gplates gare gsynthesized.: ganswer: gcell gplates gare gsynthesized.
15.Unicellular gorganisms gthat ghave ga gnucleus gand gcan gswim gwith gthe
gaid gof gcilia gare gexamples gof
A.) monerans.
B.) plants.
C.) fungi.
D.) protozoans.: ganswer: gprotozoans.
16.Which gof gthese gconditions gis gassociated gwith gsmoking?
A.) Esophageal gvarices.
B.) Tonsillitis.
C.) Emphysema.
D.) Blindness.: ganswer: gEmphysema.
17.Which gof gthese gequations gbest gillustrates ga gsynthesis greaction?
A.) 2Na g+ gCl2 g-> g2NaCl
4 g/
g54
