A- Level biology : ATP, Water & inorganic ions exam questions and answers

A- Level biology : ATP, Water &
inorganic ions exam questions and
answers
DescribeAhowAATPAisAresynthesisedAinAcellsA-AAnswer✓A1.AFromAADPAandAphosphate;

2.AByAATPAsynthase;
3.ADuringArespiration/photosynthesis;


GiveAtwoAwaysAinAwhichAtheAhydrolysisAofAATPAisAusedAinAcells.A-
AAnswer✓A1.AToAprovideAenergyAforAother

reactions
2.AToAaddAphosphateAtoAother
substancesAandAmakeAthemAmore
reactive


SuggestAtwoAreasonsAwhyAanAincreaseAinAphosphateAcanAbeAlinkedAtoAgrowthAofAtheAembryo.A-
AAnswer✓A1.A(PhosphateArequired)AtoAmakeARNA;

2.A(PhosphateArequired)AtoAmakeADNA;
3.A(PhosphateArequired)AtoAmakeAATP/ADP;
4.A(PhosphateArequired)AtoAmakeAmembranes;
5.A(PhosphatesArequired)AforAphosphorylation;


TheAchillingArequirementAofAseedsAofAcertainAplantAspeciesAisAconsideredAtoAbeAanAadaptationAforAs
urvivalAinAcountriesAwithAseasonalAchangesAinAenvironmentalAconditions.ASuggestAhowAthisAadaptatio
nAmayAenableAtheseAplantAspeciesAtoAsurviveAandArespondAtoAseasonalAchanges.A-
AAnswer✓A1.ASeeds/embryoAremain

dormant/inactiveAinAwinter/cold


2.ASeeds/plantsAdevelopAin
spring/summer
OR
3.APlantAphotosynthesiseA(in
spring/whenAwarm);
4.AProduceA(more)Aseeds/offspringAin
spring/growingAseason;