AQA GCSE BIOLOGY -
PAPER 1 QUESTIONS AND
COMPLETE SOLUTIONS
What/odoes/oa/onucleus/odo?/o-/ocorrect/oAnswers/o✔✔/o-
It/ocontains/ogenetic/omaterial/oand/ocontrols/othe/oactivities/oof/othe/ocell
What/odoes/ocytoplasm/odo?/o-/ocorrect/oAnswers/o✔✔/o-It's/oa/ogel-
like/osubstance/owhere/omost/oof/othe/ochemical/oreactions/ohappen./oIt/ocontains/oenzymes/o
that/ocontrol/othese/ochemical/oreactions
What/odoes/oa/ocell/omembrane/odo?/o-/ocorrect/oAnswers/o✔✔/o-
It/oholds/othe/ocell/otogether/oand/ocontrols/owhat/ogoes/oin/oand/oout
What/odo/omitochondria/odo?/o-/ocorrect/oAnswers/o✔✔/o-
These/oare/owhere/omost/oof/othe/oreactions/ofor/oaerobic/orespiration/ooccur./oRespiration/otr
ansfers/oenergy/othat/othe/ocell/oneeds/oto/owork
What/odo/oribosomes/odo?/o-/ocorrect/oAnswers/o✔✔/o-
This/ois/owhere/oprotein/osynthesis/otakes/oplace/o-/owhere/oproteins/oare/omade/oin/othe/ocell
What/odo/ocell/owalls/odo?/o-/ocorrect/oAnswers/o✔✔/o-
They/oare/omade/oof/ocellulose/oand/othey/osupport/oand/ostrengthen/othe/ocell
What/odoes/oa/ovacuole/odo?/o-/ocorrect/oAnswers/o✔✔/o-
It/ocontains/ocell/osap/oand/ohelps/omaintain/othe/oshape/oof/othe/ocell
What/odo/ochloroplasts/odo?/o-/ocorrect/oAnswers/o✔✔/o-
This/ois/owhere/ophotosynthesis/ooccurs,/owhich/omakes/ofood/ofor/othe/oplant./oThey/ocontain
/ochlorophyll/o-/oa/ogreen/opigment/o-/owhich/oabsorbs/olight/oneeded/ofor/ophotosynthesis
What/odo/obacterial/ocells/ocontain?/o-/ocorrect/oAnswers/o✔✔/o-
Cytoplasm,/ocell/omembrane,/ocell/owall,/oflagella,/oribosomes,/omitochondria,/oslime/ocapsu
le,/oplasmids/o(small/orings/oof/oDNA)/oand/oa/osingle/ocircular/ostrand/oof/oDNA/othat/ofloats/ofr
eely/oin/othe/ocytoplasm
What/odo/obacterial/ocells/oNOT/ocontain?/o-/ocorrect/oAnswers/o✔✔/o-A/onucleus
,What/ois/othe/oequation/ofor/omagnification?/o-/ocorrect/oAnswers/o✔✔/o-
Image/osize/odivided/oby/oactual/osize
What/ois/odifferentiation?/o-/ocorrect/oAnswers/o✔✔/o-
The/oprocess/oby/owhich/oa/ocell/ochanges/oto/obecome/ospecialised/ofor/oits/ojob
What/oare/oundifferentiated/ocells/ocalled?/o-/ocorrect/oAnswers/o✔✔/o-Stem/ocells
What/oare/osperm/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Reproduction/o-
/othey/otransport/othe/omale/oDNA/oto/othe/ofemale/oDNA
-It/ohas/oa/oflagella/oand/oa/ostreamlined/ohead/oto/ohelp/oit/oswim/otowards/othe/oegg
-There/oare/olots/oof/omitochondria/oin/othe/ocell/oto/oprovide/othe/oenergy/oneeded
-It/ocarries/oenzymes/oin/oits/ohead/oto/ohelp/odigest/othrough/othe/oegg/ocell/omembranes
What/oare/onerve/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Rapid/osignalling/o-
/othey/ocarry/oelectrical/osignals/ofrom/oone/opart/oof/othe/obody/oto/oanother
-They/oare/olong/oto/ocover/omore/odistance
-
They/ohave/obranched/oconnections/oat/otheir/oends/oto/oconnect/oto/oother/onerve/ocells/oand/
oform/oa/onetwork/othroughout/othe/obody
What/oare/omuscle/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Contraction/o-/othey/oneed/oto/ocontract/oquickly
-They/oare/olong/oso/othey/ohave/ospace/oto/ocontract
-They/ocontain/olots/oof/omitochondria/oto/ogenerate/othe/oenergy/oneeded/ofor/ocontraction
What/oare/oroot/ohair/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Absorbing/owater/oand/ominerals
-
They/oare/ocells/oon/othe/osurface/oof/oplant/oroots/owhich/ogrow/ointo/olong/ohairs/othat/ostick/o
out/ointo/othe/osoil
-
They/ohave/oa/olarge/osurface/oarea/ofor/oabsorbing/owater/oand/omineral/oions/ofrom/othe/osoil
What/oare/ochromosomes?/o-/ocorrect/oAnswers/o✔✔/o-
Coiled/oup/olengths/oof/oDNA/omolecules/othat/oare/ofound/oin/othe/onuclei
What/odo/omulticellular/oorganisms/ouse/omitosis/ofor?/o-/ocorrect/oAnswers/o✔✔/o-
To/ogrow/oor/oreplace/ocells/othat/ohave/obeen/odamaged
What/oare/ostem/ocells?/o-/ocorrect/oAnswers/o✔✔/o-
They/oare/oundifferentiated/ocells/othat/odivide/oto/oproduce/olots/omore/oundifferentiated/ocell
s./oThey/othen/odifferentiate/ointo/odifferent/otypes/oof/ocell
, Where/oare/ostem/ocells/ofound?/o-/ocorrect/oAnswers/o✔✔/o-
In/oearly/ohuman/oembryos/oor/othe/obone/omarrow/oof/oadults
What/odo/oembryonic/ostem/ocells/odo?/o-/ocorrect/oAnswers/o✔✔/o-
1)/oUsed/oto/oreplace/ofaulty/ocells/oin/osick/opeople/o-/oinsulin-
producing/ocells/ofor/odiabetes/oand/onerve/ocells/ofor/oparalysed/ospinal/oinjuries
2)/oUsed/oto/oreplace/ofaulty/oblood/ocells
What/ois/odiffusion?/o-/ocorrect/oAnswers/o✔✔/o-
Diffusion/ois/othe/omovement/oof/oparticles/ofrom/oan/oarea/oof/ohigh/oconcentration/oto/oan/oar
ea/oof/olow/oconcentration
Name/othe/osubstances/othat/ocan/odiffuse/othrough/ocell/omembranes/o-/ocorrect/oAnswers/o
✔✔/o-Glucose,/owater,/ooxygen/oand/oamino/oacids
Name/otwo/osubstances/othat/ocan't/odiffuse/othrough/ocell/omembranes/o-
/ocorrect/oAnswers/o✔✔/o-Protein/oand/ostarch
What/ois/oosmosis?/o-/ocorrect/oAnswers/o✔✔/o-
Osmosis/ois/othe/opassive/omovement/oof/owater/omolecules/othrough/oa/opartially/opermeabl
e/ocell/omembrane/ofrom/oan/oarea/oof/ohigh/owater/oconcentration/oto/oan/oarea/oof/olow/owate
r/oconcentration
What/oare/othe/otwo/omain/odifferences/obetween/oactive/otransport/oand/odiffusion?/o-
/ocorrect/oAnswers/o✔✔/o-
Active/otransport/ouses/oenergy/owhereas/odiffusion/odoesn't./oActive/otransport/ogoes/oagain
st/othe/oconcentration/ogradient/owhereas/odiffusion/ogoes/oalong/oit
Adaptations/oof/oExchange/oSurfaces/o-/ocorrect/oAnswers/o✔✔/o-1)/oLarge/osurface/oarea/o-
/olots/oof/osubstances/ocan/odiffuse/oat/oonce
2)/oLots/oof/oblood/ovessels/o-/oto/oget/ostuff/ointo/oand/oout/oof/othe/oblood/oquickly
3)/oThin/omembrane/o-/oshort/odistance/ofor/osubstances/oto/odiffuse
4)/oOften/oventilated/o-/oair/omoves/oin/o&/oout
Give/otwo/oways/othat/othe/ovilli/oin/othe/osmall/ointestine/oare/oadapted/ofor/oabsorbing/odigest
ed/ofood/o-/ocorrect/oAnswers/o✔✔/o-1)/oA/osingle/olayer/oof/osurface/ocells
2)/oA/overy/ogood/oblood/osupply/oto/oassist/oquick/oabsorption
Explain/ohow/othe/oleaves/oare/oadapted/oto/omaximise/othe/oamount/oof/ocarbon/odioxide/oth
at/ogets/ointo/otheir/ocells/o-/ocorrect/oAnswers/o✔✔/o-
1)/oThe/oexchange/osurface/oin/oa/oleaf/ois/ocovered/oin/ostomata/owhich/othe/ocarbon/odioxide/
odiffuses/othrough
2)/oThe/oleaf/ohas/oa/oflattened/oshape/owhich/oincreases/othe/oarea/oof/oits/oexchange/osurfac
e,/otherefore/oit's/omore/oeffective
PAPER 1 QUESTIONS AND
COMPLETE SOLUTIONS
What/odoes/oa/onucleus/odo?/o-/ocorrect/oAnswers/o✔✔/o-
It/ocontains/ogenetic/omaterial/oand/ocontrols/othe/oactivities/oof/othe/ocell
What/odoes/ocytoplasm/odo?/o-/ocorrect/oAnswers/o✔✔/o-It's/oa/ogel-
like/osubstance/owhere/omost/oof/othe/ochemical/oreactions/ohappen./oIt/ocontains/oenzymes/o
that/ocontrol/othese/ochemical/oreactions
What/odoes/oa/ocell/omembrane/odo?/o-/ocorrect/oAnswers/o✔✔/o-
It/oholds/othe/ocell/otogether/oand/ocontrols/owhat/ogoes/oin/oand/oout
What/odo/omitochondria/odo?/o-/ocorrect/oAnswers/o✔✔/o-
These/oare/owhere/omost/oof/othe/oreactions/ofor/oaerobic/orespiration/ooccur./oRespiration/otr
ansfers/oenergy/othat/othe/ocell/oneeds/oto/owork
What/odo/oribosomes/odo?/o-/ocorrect/oAnswers/o✔✔/o-
This/ois/owhere/oprotein/osynthesis/otakes/oplace/o-/owhere/oproteins/oare/omade/oin/othe/ocell
What/odo/ocell/owalls/odo?/o-/ocorrect/oAnswers/o✔✔/o-
They/oare/omade/oof/ocellulose/oand/othey/osupport/oand/ostrengthen/othe/ocell
What/odoes/oa/ovacuole/odo?/o-/ocorrect/oAnswers/o✔✔/o-
It/ocontains/ocell/osap/oand/ohelps/omaintain/othe/oshape/oof/othe/ocell
What/odo/ochloroplasts/odo?/o-/ocorrect/oAnswers/o✔✔/o-
This/ois/owhere/ophotosynthesis/ooccurs,/owhich/omakes/ofood/ofor/othe/oplant./oThey/ocontain
/ochlorophyll/o-/oa/ogreen/opigment/o-/owhich/oabsorbs/olight/oneeded/ofor/ophotosynthesis
What/odo/obacterial/ocells/ocontain?/o-/ocorrect/oAnswers/o✔✔/o-
Cytoplasm,/ocell/omembrane,/ocell/owall,/oflagella,/oribosomes,/omitochondria,/oslime/ocapsu
le,/oplasmids/o(small/orings/oof/oDNA)/oand/oa/osingle/ocircular/ostrand/oof/oDNA/othat/ofloats/ofr
eely/oin/othe/ocytoplasm
What/odo/obacterial/ocells/oNOT/ocontain?/o-/ocorrect/oAnswers/o✔✔/o-A/onucleus
,What/ois/othe/oequation/ofor/omagnification?/o-/ocorrect/oAnswers/o✔✔/o-
Image/osize/odivided/oby/oactual/osize
What/ois/odifferentiation?/o-/ocorrect/oAnswers/o✔✔/o-
The/oprocess/oby/owhich/oa/ocell/ochanges/oto/obecome/ospecialised/ofor/oits/ojob
What/oare/oundifferentiated/ocells/ocalled?/o-/ocorrect/oAnswers/o✔✔/o-Stem/ocells
What/oare/osperm/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Reproduction/o-
/othey/otransport/othe/omale/oDNA/oto/othe/ofemale/oDNA
-It/ohas/oa/oflagella/oand/oa/ostreamlined/ohead/oto/ohelp/oit/oswim/otowards/othe/oegg
-There/oare/olots/oof/omitochondria/oin/othe/ocell/oto/oprovide/othe/oenergy/oneeded
-It/ocarries/oenzymes/oin/oits/ohead/oto/ohelp/odigest/othrough/othe/oegg/ocell/omembranes
What/oare/onerve/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Rapid/osignalling/o-
/othey/ocarry/oelectrical/osignals/ofrom/oone/opart/oof/othe/obody/oto/oanother
-They/oare/olong/oto/ocover/omore/odistance
-
They/ohave/obranched/oconnections/oat/otheir/oends/oto/oconnect/oto/oother/onerve/ocells/oand/
oform/oa/onetwork/othroughout/othe/obody
What/oare/omuscle/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Contraction/o-/othey/oneed/oto/ocontract/oquickly
-They/oare/olong/oso/othey/ohave/ospace/oto/ocontract
-They/ocontain/olots/oof/omitochondria/oto/ogenerate/othe/oenergy/oneeded/ofor/ocontraction
What/oare/oroot/ohair/ocells/ospecialised/ofor/oand/ohow/oare/othey/ospecialised?/o-
/ocorrect/oAnswers/o✔✔/o-Absorbing/owater/oand/ominerals
-
They/oare/ocells/oon/othe/osurface/oof/oplant/oroots/owhich/ogrow/ointo/olong/ohairs/othat/ostick/o
out/ointo/othe/osoil
-
They/ohave/oa/olarge/osurface/oarea/ofor/oabsorbing/owater/oand/omineral/oions/ofrom/othe/osoil
What/oare/ochromosomes?/o-/ocorrect/oAnswers/o✔✔/o-
Coiled/oup/olengths/oof/oDNA/omolecules/othat/oare/ofound/oin/othe/onuclei
What/odo/omulticellular/oorganisms/ouse/omitosis/ofor?/o-/ocorrect/oAnswers/o✔✔/o-
To/ogrow/oor/oreplace/ocells/othat/ohave/obeen/odamaged
What/oare/ostem/ocells?/o-/ocorrect/oAnswers/o✔✔/o-
They/oare/oundifferentiated/ocells/othat/odivide/oto/oproduce/olots/omore/oundifferentiated/ocell
s./oThey/othen/odifferentiate/ointo/odifferent/otypes/oof/ocell
, Where/oare/ostem/ocells/ofound?/o-/ocorrect/oAnswers/o✔✔/o-
In/oearly/ohuman/oembryos/oor/othe/obone/omarrow/oof/oadults
What/odo/oembryonic/ostem/ocells/odo?/o-/ocorrect/oAnswers/o✔✔/o-
1)/oUsed/oto/oreplace/ofaulty/ocells/oin/osick/opeople/o-/oinsulin-
producing/ocells/ofor/odiabetes/oand/onerve/ocells/ofor/oparalysed/ospinal/oinjuries
2)/oUsed/oto/oreplace/ofaulty/oblood/ocells
What/ois/odiffusion?/o-/ocorrect/oAnswers/o✔✔/o-
Diffusion/ois/othe/omovement/oof/oparticles/ofrom/oan/oarea/oof/ohigh/oconcentration/oto/oan/oar
ea/oof/olow/oconcentration
Name/othe/osubstances/othat/ocan/odiffuse/othrough/ocell/omembranes/o-/ocorrect/oAnswers/o
✔✔/o-Glucose,/owater,/ooxygen/oand/oamino/oacids
Name/otwo/osubstances/othat/ocan't/odiffuse/othrough/ocell/omembranes/o-
/ocorrect/oAnswers/o✔✔/o-Protein/oand/ostarch
What/ois/oosmosis?/o-/ocorrect/oAnswers/o✔✔/o-
Osmosis/ois/othe/opassive/omovement/oof/owater/omolecules/othrough/oa/opartially/opermeabl
e/ocell/omembrane/ofrom/oan/oarea/oof/ohigh/owater/oconcentration/oto/oan/oarea/oof/olow/owate
r/oconcentration
What/oare/othe/otwo/omain/odifferences/obetween/oactive/otransport/oand/odiffusion?/o-
/ocorrect/oAnswers/o✔✔/o-
Active/otransport/ouses/oenergy/owhereas/odiffusion/odoesn't./oActive/otransport/ogoes/oagain
st/othe/oconcentration/ogradient/owhereas/odiffusion/ogoes/oalong/oit
Adaptations/oof/oExchange/oSurfaces/o-/ocorrect/oAnswers/o✔✔/o-1)/oLarge/osurface/oarea/o-
/olots/oof/osubstances/ocan/odiffuse/oat/oonce
2)/oLots/oof/oblood/ovessels/o-/oto/oget/ostuff/ointo/oand/oout/oof/othe/oblood/oquickly
3)/oThin/omembrane/o-/oshort/odistance/ofor/osubstances/oto/odiffuse
4)/oOften/oventilated/o-/oair/omoves/oin/o&/oout
Give/otwo/oways/othat/othe/ovilli/oin/othe/osmall/ointestine/oare/oadapted/ofor/oabsorbing/odigest
ed/ofood/o-/ocorrect/oAnswers/o✔✔/o-1)/oA/osingle/olayer/oof/osurface/ocells
2)/oA/overy/ogood/oblood/osupply/oto/oassist/oquick/oabsorption
Explain/ohow/othe/oleaves/oare/oadapted/oto/omaximise/othe/oamount/oof/ocarbon/odioxide/oth
at/ogets/ointo/otheir/ocells/o-/ocorrect/oAnswers/o✔✔/o-
1)/oThe/oexchange/osurface/oin/oa/oleaf/ois/ocovered/oin/ostomata/owhich/othe/ocarbon/odioxide/
odiffuses/othrough
2)/oThe/oleaf/ohas/oa/oflattened/oshape/owhich/oincreases/othe/oarea/oof/oits/oexchange/osurfac
e,/otherefore/oit's/omore/oeffective
