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Summary Opsomming van Selrespirasie Graad 11

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Volledige opsomming van Selrespirasie opgestel uit verskeie bronne, in maklike verstaanbare taal

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Selrespirasie

 Selrespirasie is die afbreek van organiese verbindings.
 Energie word vrygestel en in ATP-molekules geberg.
 Suurstof word benodig.
 Koolstofdioksied en water word as afvalprodukte vrygestel.
 Doel van selrespirasie is dus om energie te vervaardig vir
lewensprosesse.
 Lewensprosesse: groei, selverdeling, spysvertering, beweging, vervoer
van stowwe



Wet van behoud van energie:
 Energie kan nie geskep of vernietig word nie, slegs van een vorm na ‘n ander
omgeskakel
 Son is primere bron van energie vir lewe
 Stralingsenergie word omgeskakel in chemiese potensiele energie (fotosintese)
 Selrespirasie breek organiese verbindings af
 Chemiese energie word vrygestel
 Energie word deur ATP na ander dele van liggaam gedra
 Gedeelte van energie word as hitte afgegee



Grondstowwe nodig vir selrespirasie
1. Glukose
2. Suurstof



Produkte van selrespirasie
1. Koolsofdioksied
2. Water
3. ATP (energie)



GLUKOSE + O2 --------- CO2 + H20 + ATP
ENSIEME




Plek waar selrespirasie plaasvind
 Die 1e fase vind in die sitoplasma (sitosol) plaas
 Die 2e en 3e fases vind binne-in die mitochondrium

, Fotosintese is ‘n anaboliese proses want energieryke glukose word opgebou

Selrespirasie is ‘n kataboliese proses want energieryke glukose word
afgebreek



Proses van selrespirasie

1. Aërobiese respirasie (benodig suurstof)
2. Anaërobiese respirasie (benodig nie suurstof nie)



Aërobiese respirasie

1. Glikolise
2. Krebssiklus
3. Oksidatiewe fosforilering




1. Glikolise
- Vind plaas in sitosol buite mitocondrium
- Is anaërobiese fase (nie 02 nie)
- Glukose word afgebreek
- Pirodruiwesuur word gevorm
- Energieryke H-atome word vrygestel
- Energieryke waterstofatome word na 3e fase gedra

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