For each process of cellular respiration – Glycolysis, Fermentation, Pyruvate Ox
ID: 59853 • Letter: F
Question
For each process of cellular respiration – Glycolysis, Fermentation, Pyruvate Oxidation, Citric acid cycle, Electron transport, Oxidative phosphorylation - answer the following 5 questions:
Where does each process happen within the cell?
What are the key reactants for the pathway and key products of the pathway?
Which product(s) of each process is/are the substrate for further rxns?
How does presence or absence of O2 affect each process?
Predict the effect on ATP production if the pathway is inhibited
Explanation / Answer
Q1. Glycolysis ---------> Occurs in the cytoplasm. Glycolysis is an anaerobic process, through which one glucose molecules is breakdown into two molecules of three carbon pyruvate. The glycolysis of each glucose molecule generates 2 ATP molecules.
Fermentation: Fermentation occurs in the cytoplasm. Fermentation (the metabolism of sugars into acids, gases or alcohol) is a characteristic metabolic process that is used to differentiate different strains of bacteria.
Pyruvate oxidation: Occurs in mitochondria.
Citric acid cycle: Occurs in mitochondria
Electron transport: Occurs in motochondria
Oxidative phosphorylation : Occcurs in mitochondria.
The pyruvate generated by the glycolysis is converted into acetyl-CoA that enters into the citric acid cycle. Citric acid cycle involves a series of reactions that occur in the presence of oxygen. Citric acid cycle generates NADH, which enters into the oxidative phosphorylation process. This cycle occurs in mitochondrial matrix; it consumes 2 water molecules, and generates two carbondioxide molecules along with one ATP molecule as a direct energy source.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.