,
, Chapter 1, The Cell in Health and Illness
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Whichstatementregardingthesodium–potassiumpumpiscorrect?
1. Thecell’s plasmamembraneismoresolubletosodiumionsthan potassiumions. j
2. Theconcentrationofsodiumionsshouldbehigherinsidethecellcompartment.
3. Theconcentrationofpotassiumionsshouldbehigheroutsidethecell j
compartment.
4. Theactivetransport involvespumpingoutthreesodiumionsandpumpingintwo
j
potassium ions.
2. In theabsence ofoxygen,whichcellularfunctioncreatesthesameamountofenergyasiscreatedin the
j j
presence of oxygen?
1. Dissipationofpyruvicacid
2. Initiationofthecitricacidcycle
3. Activationofacetyl-coenzymeA
4. Creationofacidosisvialacticacid
3. Howmanyadenosinetriphosphates(ATPs)areproducedinaerobicenergymetabolism?
j j
1. 2
2. 3
3. 34
4. 53
4. Whichcellorganellesdifferin theirnumberaccordingtothecell’s
j energyneeds?
1. Ribosomes
2. Mitochondria
3. Ribonucleicacids
4. Deoxyribonucleicacids j
5. Whichoptionbestsupportsthereason moreenergyisproducedwhenapersonis exercising?
j j
1. Exercisecausesanincreaseinthesynthesis ofprotein.
2. Thereis anincrease intheproductionofpyruvicacidinthecells.
3. Theconversionofpyruvicacid tolactic acidisincreasedbyexercise.
j j j
4. Musclecellshavemoremitochondriatomeetenergydemands.
6. Whendoesribosomalproteinsynthesiscease?
1. Duringendoplasmicreticulumstress
2. Duringthesynthesisofadenosinetriphosphate(ATP)
3. Duringasevere hypoxicstate
j
4. Duringtheprocessingofprohormone
7. Whichcellularorganelles areresponsibleforpropellingmucusandinhaled debris out
j j j ofthelungs?
1. Cilia
2. Microfilaments
3. Secretoryvesicles