Version61.0:602/2010
K
General Certificate of Education June
6 6 6 6 6
2010
Biology BIOL5
Control in cells and in organisms
6 6 6 6 6
Final
Mark Scheme
6
,Mark6schemes6are6prepared6by6the6Principal6Examiner6and6considered,6together6with6the6releva
nt6questions,6by6a6panel6of6subject6teachers.6 This6mark6scheme6includes6any6amendments6ma
de6at6the6standardisation6meeting6attended6by6all6examiners6and6is6the6scheme6which6was6use
d6by6them6in6this6examination.6 The6standardisation6meeting6ensures6that6the6mark6scheme6cov
ers6the6candidates’6responses6to6questions6and6that6every6examiner6understands6and6applies6it
6in6the6same6correct6way.6 As6preparation6for6the6standardisation6meeting6each6examiner6analys
es6a6number6of6candidates’6scripts:6alternative6answers6not6already6covered6by6the6mark6schem
e6are6discussed6at6the6meeting6and6legislated6for.6 If,6after6this6meeting,6examiners6encounter6u
nusual6answers6which6have6not6been6discussed6at6the6meeting6they6are6required6to6refer6these6
to6the6Principal6Examiner.
It6must6be6stressed6that6a6mark6scheme6is6a6working6document,6in6many6cases6further6 develop
ed6and6expanded6on6the6basis6of6candidates’6reactions6to6a6particular6paper.6Assumptions6abou
t6future6mark6schemes6on6the6basis6of6one6year’s6document6should6be6avoided;6whilst6the6guidi
ng6principles6of6assessment6remain6constant,6details6will6change,6depending6on6the6content6of6
a6particular6examination6paper.
Further6copies6of6this6Mark6Scheme6are6available6to6download6from6the6AQA6Website:6 www.aqa.org.uk6Cop
yright6©620106AQA6and6its6licensors.6 All6rights6reserved.
COPYRIGHT
AQA6retains6the6copyright6on6all6its6publications.6 However,6registered6centres6for6AQA6are6permitted6to6copy6material
6from6this6booklet6for6their6own6internal6use,6with6the6following6important6exception:6 AQA6cannot6give6permission6to6c
entres6to6photocopy6any6material6that6is6acknowledged6to6a6third6party6even6for6internal6use6within6the6centre.
Set6and6published6by6the6Assessment6and6Qualifications6Alliance.
The6Assessment6and6Qualifications6 Alliance6(AQA)6is6a6company6limited6by6guarantee6registered6in6England6and6Wales6(company6number63644723)6and6a6registered6charity6(registered6char
ity6number61073334).6 Registered6address:6AQA,6Devas6Street,6Manchester6M1566EX
, Biology6-
6AQA6GCE6Mark6Scheme620106June6series
Although6specific6marks6are6not6awarded6in6questions616–
67,6marks6awarded6will6take6in6to6account6the6quality6of6written6communication.6 Credit6will6only6be6awarded6where6candidates6have6presented6i
nformation6clearly6and6coherently6and6have6used6the6specialist6vocabulary6indicated6in6the6mark6scheme6for6this6unit.6 Specific6references6to6q
uality6of6written6communication6are6included6in6the6Comments6column6in6this6mark6scheme.
Question Marking6guidance Mark Comments
1(a)(i) Taxis; 1 Ignore6references6to6positive6and6negative,6and6prefixes6such6
as6photo-
Accept6taxes/tactic
Allow6phonetic6spelling
1(a)(ii) Moves6towards6stimulus/towards6light; 1 Direction6must6be6correct.
1(b) Gravity; 3 Accept6geotaxis
Antennae6involved;
Doesn’t6show6light6is6involved/doesn’t6respond6to6light6as6
they6are6unable6to6see/as6eyes6are6covered;
1(c) Helps6them6to6leave6the6soil/ground/reach6the6surface;6Di 26max
sperse/produce6new6colonies;
Avoid6competition;
3
K
General Certificate of Education June
6 6 6 6 6
2010
Biology BIOL5
Control in cells and in organisms
6 6 6 6 6
Final
Mark Scheme
6
,Mark6schemes6are6prepared6by6the6Principal6Examiner6and6considered,6together6with6the6releva
nt6questions,6by6a6panel6of6subject6teachers.6 This6mark6scheme6includes6any6amendments6ma
de6at6the6standardisation6meeting6attended6by6all6examiners6and6is6the6scheme6which6was6use
d6by6them6in6this6examination.6 The6standardisation6meeting6ensures6that6the6mark6scheme6cov
ers6the6candidates’6responses6to6questions6and6that6every6examiner6understands6and6applies6it
6in6the6same6correct6way.6 As6preparation6for6the6standardisation6meeting6each6examiner6analys
es6a6number6of6candidates’6scripts:6alternative6answers6not6already6covered6by6the6mark6schem
e6are6discussed6at6the6meeting6and6legislated6for.6 If,6after6this6meeting,6examiners6encounter6u
nusual6answers6which6have6not6been6discussed6at6the6meeting6they6are6required6to6refer6these6
to6the6Principal6Examiner.
It6must6be6stressed6that6a6mark6scheme6is6a6working6document,6in6many6cases6further6 develop
ed6and6expanded6on6the6basis6of6candidates’6reactions6to6a6particular6paper.6Assumptions6abou
t6future6mark6schemes6on6the6basis6of6one6year’s6document6should6be6avoided;6whilst6the6guidi
ng6principles6of6assessment6remain6constant,6details6will6change,6depending6on6the6content6of6
a6particular6examination6paper.
Further6copies6of6this6Mark6Scheme6are6available6to6download6from6the6AQA6Website:6 www.aqa.org.uk6Cop
yright6©620106AQA6and6its6licensors.6 All6rights6reserved.
COPYRIGHT
AQA6retains6the6copyright6on6all6its6publications.6 However,6registered6centres6for6AQA6are6permitted6to6copy6material
6from6this6booklet6for6their6own6internal6use,6with6the6following6important6exception:6 AQA6cannot6give6permission6to6c
entres6to6photocopy6any6material6that6is6acknowledged6to6a6third6party6even6for6internal6use6within6the6centre.
Set6and6published6by6the6Assessment6and6Qualifications6Alliance.
The6Assessment6and6Qualifications6 Alliance6(AQA)6is6a6company6limited6by6guarantee6registered6in6England6and6Wales6(company6number63644723)6and6a6registered6charity6(registered6char
ity6number61073334).6 Registered6address:6AQA,6Devas6Street,6Manchester6M1566EX
, Biology6-
6AQA6GCE6Mark6Scheme620106June6series
Although6specific6marks6are6not6awarded6in6questions616–
67,6marks6awarded6will6take6in6to6account6the6quality6of6written6communication.6 Credit6will6only6be6awarded6where6candidates6have6presented6i
nformation6clearly6and6coherently6and6have6used6the6specialist6vocabulary6indicated6in6the6mark6scheme6for6this6unit.6 Specific6references6to6q
uality6of6written6communication6are6included6in6the6Comments6column6in6this6mark6scheme.
Question Marking6guidance Mark Comments
1(a)(i) Taxis; 1 Ignore6references6to6positive6and6negative,6and6prefixes6such6
as6photo-
Accept6taxes/tactic
Allow6phonetic6spelling
1(a)(ii) Moves6towards6stimulus/towards6light; 1 Direction6must6be6correct.
1(b) Gravity; 3 Accept6geotaxis
Antennae6involved;
Doesn’t6show6light6is6involved/doesn’t6respond6to6light6as6
they6are6unable6to6see/as6eyes6are6covered;
1(c) Helps6them6to6leave6the6soil/ground/reach6the6surface;6Di 26max
sperse/produce6new6colonies;
Avoid6competition;
3
