PHYS 261 LECTURE FINAL
Forthefollowingquestions,matchtheleveloforganizationwithitsdefinitionbelow.
A.
... [Show More] acollectionofsimilarcellsthatcarryoutsimilarfunctionsB. thesmallestlivingunitC. acollectionofdifferenttissuesthatcarryoutrelatedfunctionsD. groupsoforgans functioning in a coordinated manner1) cellB.thesmallestlivingunit2) tissueA.acollectionofsimilarcellsthatcarryoutsimilarfunctions3) organsC.acollectionofdifferenttissuesthatcarryoutrelatedfunctions4) organsystemsD.groupsoforgans functioning in a coordinated manner
5) NucleicacidsarepolymersofunitscalledA) ribose.B) bases.C) fattyacids.D) aminoacids.E) nucleotides.
6) CellmembranesaresaidtobeA) activelypermeable.B) impermeable.C) freelypermeable.D) selectivelypermeable.E) noneoftheabove
7) In humans, only __________ cells have flagella.A) spermB) intestine liningC) stomach liningD) respiratory tract liningE) two of the above
8) Theadditionofaphosphategrouptoasubstrateiscalled__________.Theenzymethatcatalyzesthisreactionisreferredtoasa__________.A) phosphorylation;kinaseB) proteolysis;kinaseC) proteolysis;peptidaseD) phosphorylation;phosphataseE) Noneofthe aboverepresentsthe correctterminology.
9) AnallostericmodulatorbindstoA) theactivesite.B) theproduct.C) aregionoftheenzymeotherthantheactivesite.D) thesurroundingtissue.E) thesubstrate.
10) Permeability is a property ofA) solutes.B) solvents.C) ions.D) membranes.E) proteins.
11) Whatarethetwoextracellularfluidcompartmentsinthebody?
A) plasmaandthefluidportionofthebloodB) intracellularandplasmaC) plasmaandinterstitialD) interstitialandintracellularE) noneofthe above
12) SaturationoccurswhenA) theenergyrequiredtomovemoleculesresultsfromahigh-energybond.B) acarriermoleculehastheabilitytotransportonlyonemoleculeoragroupofcloselyrelatedmolecules.C) apreferenceofacarrierproteinforasubstanceisdemonstratedbasedonthedifferingaffinitiesofthecarrierforthesubstrates.D) agroupofcarrierproteinsisoperatingatitsmaximumrate.E) moleculesaremovedbytheuseofvesicles.
13) ThemeansbywhichacelltransportslargemoleculesoutofthecelliscalledA) endocytosis.B) exocytosis.C) phagocytosis.D) diffusion.E) activetransport.
14) Comparedtotheoutsidesurface,theinsideofarestingcellmembraneisA) continuouslyreversingitselectricalcharge.B) positivelycharged.C) negativelycharged.D) electricallyneutral.E) positivelychargedwheneverthesodium-potassiumpumpisactive.
15) Receptor molecules are locatedA) in the outer cell membrane.B) in the cytosol.C) in the nucleus.D) BandCE) alloftheabove
16) Whenadenylylcyclaseisactivated,A) steroidsareproduced.B) cAMPisformed.C) cAMPisbrokendown.D) proteinkinasesaremetabolized.E) calciumionsarereleasedfromintracellularstores.
17) TheincreasinglyforcefuluterinecontractionsthatleadtochildbirthareanexampleofA) negativefeedback.B) positivefeedback.C) effectorshutdown.D) receptoractivation.E) noneoftheabove
18) Whenacatecholamineorpeptidehormonebindstoreceptorsonthesurfaceofacell,A) thecellbecomesinactive.B) asecondmessengerappearsinthecytoplasm.C) thecellmembranebecomeslesspermeable.D) thehormoneistransportedtothenucleuswhereitalterstheactivityofDNA.E) noneoftheabove
19) Whensteroidhormonesbindtotheirreceptors,A) genetranscriptionmaystartorstop.
B) proteinkinasesareactivated.C) adenylylcyclaseisactivated.D) cyclicnucleotidesareformed.E) Gproteinsareinhibited.
20) ThepituitaryhormonethatstimulatesmilkproductionbythemammaryglandsisA) ACTH.B) growthhormone.C) prolactin.D) FSH.E) TSH.
21) Exocrineglands,smoothmuscles,andcardiacmusclesarecontrolledbytheA) somaticmotordivision.B) peripheralnervoussystem.C) autonomicnervoussystem.D) centralnervoussystem.E) entericnervoussystem.
22) Themultiple thin,branchedstructureson aneuronwhosemainfunctionistoreceiveincomingsignalsaretheA) axons.B) cellbodies.C) dendrites.D) somata.E) noneofthe above
23) TheregionwheretheaxonterminalmeetsitstargetcelliscalledtheA) hillock.B) synapse.C) dendrites.D) nerve.E) collateral. [Show Less]