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Summary GCSE Biology AQA notes

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Biology GCSE AQA revision summary notes including :the structure of leaves, plants,cells ,respiration , communicable diseases and non-communicable, plant diseases, vaccinations, monoclonal antibodies, developing drugs and defences against diseases.

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BiologyNotes

ukaryoticcellsarecomplexandincludeallplantandanimalcellsEukaryotes
are organismsthataremadeupofeukaryoticcells
Prokaryoticcellsaresmaller andsimpler egbacteriaAprokaryoteis aprokaryoticcell singlecelled


nimalcell
Vadeus containsgeneticmaterialthatcontrolstheactivitiesofthecell

Cytoplasm gellikesubstancewheremostofthechemicalreactionshappenTheenzymescontrolthereaction
radioed


f
th
ia.ipqgia.name
Mitochondria thesearewheremost

transgers
energythattheweneedtowork
Sibosomes these
of thereactionsforaerobicrespirationtakeplaceRespiration

arewhereproteinsaremadeinthecell
ara.ot


oas. r
Slantcell


ᵗᵈ
lhÑ That Isp TÉÉÉÉ É
dddd
dWÉ
ÉÉ idd.sk
soe
n u
shgÉÉ
chloroplasts thesearewherephotosynthesisoccurswhich substancecalledchlorophyll
of
makes a
ifeng.ae green
go.gggg.gg
Whichabsorbsthe
lightneededfor
photosythesis

O
rosette o

µ
ftp.TNAR

0
teaspoon




Bacterialcell
Umembrane
wall cytoplasm
cell



0H
Bacterialcellsdon't
haveatruenucleusinsteadthey
haveasinglecircularstrandofDNAthatfloatsfreely

1 inthecytoplasm
The If In Icalled
plasmid

, LETTIE
theabilitytodistinguishbetweentwopointssoahigherresolutiongivesasharperimage


image

agnification images c
magnification real
size


Scanningelectronmicroscopehelps
youtosee
ribosomes




Onion periment

1 ddadropofwatertothemiddleortheslide
2Usetweezerstopeeloftheepidermaltissueoranonionandplaceontheslide
3 ddadropofiodinesolutiontohighlightobjectsinacell addingcolourtothemstain
by
4Putacoverslipontop
5cliptheslidethenselectthelowestpoweredobjectivelensthisissoyoucanseemorecells
6UsethecoarseadjustmentknobtomovethestageupherAdjustthefocuswiththesineadjustmentknob


CellDiggerentition
istheprocessbywhichacellchangestobecomespecialisedforitsjob
Disserentition


Ascellschangetheydevelop d iggerentsubcellularstructuresandturn
intodifferenttypesofcellsThisallowsthemtohavespecificfunctions

abilitytodifferentiateislostatanearlystageand
ostdifferentitionoccursasanorganismdevelopsnmostanimalcellsthe becomespecialisedbut
lots plantcells
of
don't losethisability
ever
iiheiiiiiiii
ii
iiiiiiiiiiiiiiiiiii.io




5mecellsareundifferentiatedcells they cells
calledstem
are

undifferentiated cell white
differentiated cell
blood




cells
Specialised




ÉÉffethemale tothefemale thasalongtailanda streamlinedheadtohelpitswimtothe
egg
herearealot
him
the
trocondriain celltoprovidetheenergyneeded talsocarriesenzymesinitsheadtodigestthroughtheeggcellmembrane

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