Question

Give the schematic representation of Glycolysis

Answer 1

Glycolysis -

(i) In this process, glucose undergoes partial oxidation to form two molecules of pyruvic acid.

(ii) In plants, this glucose is derived from sucrose which converted into glucose and fructose by the enzyme, invertase and these two monosaccharides readily enter the glycolytic pathway.

(iii) Glucose and fructose are phosphorylated to give rise to glucose-6-phosphate by the activity of the enzyme hexokinase.

(iv) This phosphorylated form of glucose then isomerises to produce fructose-6-phosphate.

(v) A chain of ten reactions, under the control of different enzymes, takes place to produce pyruvate from glucose.

(vi) Utilization of ATP during glycolysis

(a)During the conversion of glucose into glucose-6-phosphate.

(b) During the conversion of fructose-6-phosphate to fructose-1, 6-diphosphate.