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Dissimilation - Zusammenfassung

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Zusammenfassung Biologie Thema: Dissimilation

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Secondary school
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Gymnasium
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Uploaded on
May 22, 2022
Number of pages
3
Written in
2020/2021
Type
Summary

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Dissimilation
Zellatmung (aerober Abbau organischer Stoffe)
Zellatmung
C 6 H 12 O 6 + 6O2 +6 H 2 O 6 CO 2+12 H 2 O (Bruttogleichung)
Fotosynthese

Glykolyse




oxidative Decarboxilierung
 im Anschluss an die Glykolyse wird vom Pyruvat
zunächst CO2 abgespalten, dabei wird auch
Wasserstoff abgespalten und an NAD+ gebunden

Citratzyklus
 der C2 Körper Acetyl-CoA (aktivierte Essigsäure)
geht in den Citratzyklus ein und wird weiter
stufenweise abgebaut
 Bilanz: 4 abgespaltene Moleküle CO2, 6x NADH+H+,
2x FADH2 und 2 ATP

Atmungskette und oxidative Phosphorylierung
 in der Atmungskette geben die Wasserstoffüberträger NADH+H + und FADH2 den
gebundenen Wasserstoff in Form von H+ und e- frei
 die Elektronen wandern in der Atmungskette von Enzym zu Enzym, wobei jeweils kleine
Energiebeträge freigesetzt werden
 die Redoxenzyme der Atmungskette wirken als Protonenpumpen und transportieren
unter Nutzung der freigesetzten Energieportionen H+-Ionen aus der
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