Question

Question 12 0.25 pts Glucose oxidation is completed (i.e. finished) in Gluconeogenesis Oxidative phosphorylation O Pyruvate oxldation Glycolysis o The Citric Acid Cycle

Answer 1

The citric acid cycle

The steps of aerobic respiration are -

Glycolysis which is the breakdown of one molecule of glucose into two molecules of pyruvic acid in cytoplasm.

Transport of pyruvic acid into mitochondrial matrix.

Oxidation of pyruvate acid into acetyl coenzyme A along with release of one molecule of carbon dioxide in mitochondrial matrix by enzyme pyruvate dehydrogenase. This is called as oxidative decarboxylation or pyruvate oxidation.

Acetyl coenzyme A enters citric acid cycle which leads to synthesis of various intermediates which are precursor for the synthesis of other metabolites. It occurs in mitochondria Matrix. At this stage the oxidation of glucose is completed.

The high energy electron Carriers (NADH and FADH2) formed in the above three steps - glycolysis, pyruvate oxidation and tricarboxylic acid cycle will enter electron transport chain to generate water molecules and ATP.

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