ATI TEAS 7 Science Pretest Questions And Answers

ATI TEAS 7 Science Pretest Questions
And Answers
Aapolysaccharideacanabeadescribedaasawhichaofatheafollowing?

A.)aAacarbohydrateathataisamadeaofamanyasugaramolecules

B.)aAamoleculeathataisamadeaupaofamanyaaminoaacidamonomers

C.)Aamacromoleculeathatamakesaupamanyalipidamolecules

D.)aAapolymeramadeaupaofamanyafattyaacidsabondedatogethera-aCORRECTaaANSWER-
A.)aAacarbohydrateathataisamadeaofamanyasugaramolecules


"Poly"ameansamany,aanda"saccharide"ameansasugar.

Anaatomathatahasalostaanaelectronabecomesa_______ainachargeaandaisacalledaa(n)a_______
_____.

A.)apositive;aanion

B.)anegative;acation

C.)anegative;aanion

D.)apositive;acationa-aCORRECTaaANSWER-D.)apositive;acation


Anaatomawithoutaaachargeaisaneutralabecauseaitahasatheasameanumberaofaelectronsainaitsaor
bitalsaasaprotonsainaitsanucleus.aWhenaanaelectronaisalostafromatheaatom,aaapositiveaprotonai
sanotabalancedaandatheaatomaisacalledaaacation.aWhenaanaelectronaisagainedabyaanaatom,ath
eaextraanegativeachargeaofatheaelectronaisanotabalancedabyaanaextraaprotonainatheanucleus.a
Aanegativelyachargesaatomaisacalledaanaanion.

Atomicamassahasaaadecimalabecauseaitaisatheaaveragea_____aofaallatheaisotopesaforaaapartic
ularaelement.aTheaatomicanumberaofaanaelementaisatheanumberaofa________ainaitsanucleus.
a




A.)anumberaofaelectrons;aprotons

B.)amass;aprotons

, C.)amass;aneutrons

D.)aprotons;aneutronsa-aCORRECTaaANSWER-B.)amass;aprotons


Theamassaofaallaisotopesaforaanaelementaareaaverageatoaderiveatheaatomicamassaseenainaan
aelement'saboxainatheaperiodicatable.aTheaatomicanumberaisaanaintegeravalueaindicatingathea

numberaofaprotonsaisaoneaatomaofaanaelement.

Contractionaoccursawithinatheathina_______afilamentsaslideapastatheathickera______afilame
nts,acausingatheasarcomereaunitatoashortenaoracontract.

A.)aactin;amyosin

B.)amyosin;aaxon

C.)aaxon;aactin

D.)adendrite;aaxona-aCORRECTaaANSWER-A.)aactin;amyosin


Actinaandamyosinaslideapastaeachaother,aandatheasarcomereaunitashrinks.

Eachaelement'saatomicanumberaisadeterminedabyatheanumberaofawhichaofatheafollowingatyp
esaofaparticlesainaeachaatom?

A.)aProtons

B.)aElectrons

C.)aNeutrons

D.)aIonsa-aCORRECTaaANSWER-A.)aProtons


Theaatomicanumberaofaanaelementaisaitsanumberaofaprotons.

Geneticainformationadescribingatheacharacteristicsaofaanaorganismaisafoundainawhichaofathea
following?

A.)aRibosome

B.)aNucleus

C.)aLysosome