Oxidative Decarboxylation and Citric Acid Cycle
The first page details the complex biochemical pathway of oxidative decarboxylierung und citratzyklus within the mitochondrial matrix. The process involves multiple enzymes and coenzymes working in concert to break down glucose completely.
Definition: Oxidative decarboxylierung is the process where pyruvate is converted to acetyl-CoA while releasing CO₂ and generating NADH.
Highlight: The process occurs in the mitochondrial matrix and involves a multienzyme complex for efficient energy production.
Example: For each glucose molecule, the citric acid cycle runs twice, producing multiple energy-carrying molecules.
Vocabulary:
- Pyruvate: The end product of glycolysis
- Acetyl-CoA: Activated form of acetic acid
- NAD+/NADH: Electron carriers involved in cellular respiration
- FAD/FADH₂: Flavin adenine dinucleotide in oxidized and reduced forms
Quote: "Pro Glucose-Molekül läuft der Citratzyklus 2mal ab" (The citric acid cycle runs twice per glucose molecule)
The bilanz oxidative decarboxylierung und citratzyklus shows that the complete oxidation of glucose yields:
- 8 NADH + H+
- 2 FADH₂
- 2 GTP
- 6 CO₂
- Multiple ATP molecules through subsequent oxidative phosphorylation
The pathway demonstrates how cells efficiently extract energy from glucose through a series of controlled oxidation reactions, with the gesamtbilanz zellatmung showing the complete conversion of glucose to CO₂ while capturing energy in useful forms.