Summary
Summary fotosintese
- Course
- Life Sciences
- Institution
- 12th Grade
biologies fotosintese opsommings, graad 12 IEB
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Fotosintese:Pigment: stof wat kleur het.
Ensiem: chemise stof wat chemise reaksies versnel sonder om self te verander.
Anaboliese: chemise reaksie wat plaasvind wanneer klein, eenvoudige molecules tot groot komplekse
molecules opgebou word.
Sintetiseer: om ‘n komplekse stof uit eenvoudiger stowwe te vorm.
Selrespirasie: proses waartydens selle glukosemolekules afbreek om energie vry te stel wat deur selle
gebruik kan word.
Ligfase: ligafhanklike stadium van fotosintese wat in granum van chloroplaste plaasvind.
Donkerfase: lig onafhanklike stadium van fotosintese wat in stroma van chloroplaste plaasvind.
ATP(adenosine trifosfaat): belangrike draer van energie in sel.
Stroma: vloeistof binne-in chloroplaste.
Proses waartydens plante hulle sonligenergie vasvang en gebruik om voedingstowwe te maak
en suurstof vvry te stel.
Anaboliese proses
Vind plaas in chloroplaste
Chloroplaste bevat groenpigment = chlorofil
Glukose = energieryke molekule
Oormatige glukose = omskep in stysel in blaar en ander dele van plant
Water + CO2 (sonlig, chlorofil, ensieme) glukose + O2
6H2O + 6CO2 (sonlig, chlorofil, ensieme) C6H12O6 + 6O2
Vereistes vir fotosintese:
Sonligenergie: chlorofil in chloroplaste in mesofilselle van blaar neem energie op.
Koolstofdioksied: gaan blaar binne deur middel van stomata binne en versprei deur blaar deur
ligruimtes tussen sponsagtige mesofilselle.
Water: wortelhare van plant neem water op en vervoer in xileemvate van are na blare.
Chlorofil: groen pigment in chloroplaste wat sonligenergie opneem.
Ensieme: ensieme in mesofilselle nodig om chemise reaksies, wat deel van proses van
fotosintese vorm, kataliseer.
Fotosintese se produkte:
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