Exam (elaborations)

AQA A - LEVEL BIOLOGY PAPER 3 Unit 8

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AQA A - LEVEL BIOLOGY PAPER 3 Unit 8

Exonz-zCORRECTzANSWER-azcodingzsectionzofzthezgenezthatzcodeszforzanzaminozacidzsequence

Intronz-zCORRECTzANSWER-aznon-codingzsectionzofzthezgene

Framezshiftz-zCORRECTzANSWER-whenzadditionzorzdeletionzshiftszthezgeneticzcodezeitherzleftzorzright

Additionzmutationz-zCORRECTzANSWER-thezadditionzofzazbaseztozthezbasezsequence

Deletionzmutationz-zCORRECTzANSWER-thezremovalzofzazbasezfromzthezbasezsequence

Substitutionzmutationz-zCORRECTzANSWER-thezsubstitutionzofzazbasezinzthezbasezsequence

Inversionzmutationz-zCORRECTzANSWER-
azsectionzofzDNAzbaseszarezseparatedzfromzthezDNAzsequencezandzre-
joinzatzthezsamezpositionzbutzinverse

Duplicationzmutationz-zCORRECTzANSWER-
Onezorzmorezbaseszarezduplicatedzinzthezbasezsequence,zleadingztozframezshift

Translocationzmutationz-zCORRECTzANSWER-
azgroupzofzbaseszfromzonezchromosomezbecomeszinsertedzintozanotherzchromosomezleadingztozabnorma
lzphenotypes

Tumourz-zCORRECTzANSWER-azmasszofzabnormalzcells

Cancerz-zCORRECTzANSWER-azgroupzofzdiseaseszcausedzbyzdamageztozthezgeneszthatzcontrolzcellzgrowth

Acquiredzmutationsz-zCORRECTzANSWER-mutationszthatzoccurzafterzfertilisation

, Tumour-suppressorzgenesz-zCORRECTzANSWER-
geneszthatzmaintainznormalzcellzdivisionzandzpreventzthezformationzbyzslowingzcellzdivisionzandzcausingzm
utatedzcellsztozcommitzapoptosis

Proto-oncogenesz-zCORRECTzANSWER-normalzgeneszthatzcontrolzcellzgrowthzbyzstimulatingzcellzdivision

Benignztumourz-zCORRECTzANSWER-aznon-
cancerousztumourzcoveredzinzfibrousztissuezwhichzstopszthezcellszinvadingzotherztissues

Malignantztumourz-zCORRECTzANSWER-
azcancerousztumourzthatzspreadszaroundzthezbodyzthroughzthezbloodstreamzandzlymphaticzsystem

Methylationz-zCORRECTzANSWER-additionzofzazmethylzgroup

Hypermethylationzofztumourzsuppressorzgenesz-zCORRECTzANSWER-
geneszareznotztranscribedzandzsozthezproteinszthatzslowzcellzdivisionzareznotzsynthesisedzandzsozcellszdivid
ezuncontrollablyzbyzmitosis

Hypomethylationzofzproto-oncogenesz-zCORRECTzANSWER-causeszproto-
oncogenesztozactzaszoncogeneszwhichzincreaseszthezsynthesiszofzproteinszthatzstimulatezcellzdivision

Totipotentzstemzcellsz-zCORRECTzANSWER-
canzdivideztozproducezanyztypezofzbodyzcellzinzembryoszandzzygotes

Pluripotentzstemzcellsz-zCORRECTzANSWER-
canzdifferentiatezintozalmostzanyztypezofzbodyzcellzandziszoftenzusedzinztheztreatmentzofzdisorders

Multipotentzstemzcellsz-zCORRECTzANSWER-canzdifferentiatezintozazfewzclosely-
relatedztypeszofzcellszandziszfoundzinzadults

Unipotentzstemzcellsz-zCORRECTzANSWER-
canzonlyzdifferentiatezintozazsingleztypezofzcellzderivedzfromzmultipotentzstemzcells

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Institution: AQA BIOLOGY
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Uploaded on: October 2, 2024
Number of pages: 6
Written in: 2024/2025
Type: Exam (elaborations)
Contains: Questions & answers

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proto oncogenesz
aqa a level biology paper 3 unit 8
exonz zcorrectzanswer azcodingzsectionzofzthezgene
inversionzmutationz zcorrectzanswer azsectionzofzd
hypermethylationzofztumourzsuppressorzgenesz

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AQA A - LEVEL BIOLOGY PAPER 3 Unit 8

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