What Do You Mean By Gluconeogenesis ?

1.	What Do You Mean By Gluconeogenesis ?
Answer» Under either aerobic or anaerobic conditions, the central pathway of carbohydrate BREAKDOWN involves the conversion of glucose-6-phosphate to pyruvate, catalysed by the enzymes of glycolysis. In contrast, gluconeogenesis means the synthesis of new glucose, which TAKES place in many different organisms by utilizing the central pathway of glucose catabolism in the reverse direction, i.e., the pathway leading from pyruvate to glucose-6-phosphate and ultimately to glucose. In such central pathway of glucose BIOSYNTHESIS, conversion of other SIMPLE precursors like lactate, certain amino acids into glucose is also possible. In photosynthetic organisms, however, biosynthesis of carbohydrates takes place by the most prominent processes utilizing solar energy, in which hexoses generated from carbon dioxide and water are CONVERTED into starch, sucrose, cellulose and other polysaccharides.

Answer»

Under either aerobic or anaerobic conditions, the central pathway of carbohydrate BREAKDOWN involves the conversion of glucose-6-phosphate to pyruvate, catalysed by the enzymes of glycolysis.
In contrast, gluconeogenesis means the synthesis of new glucose, which TAKES place in many different organisms by utilizing the central pathway of glucose catabolism in the reverse direction, i.e., the pathway leading from pyruvate to glucose-6-phosphate and ultimately to glucose.
In such central pathway of glucose BIOSYNTHESIS, conversion of other SIMPLE precursors like lactate, certain amino acids into glucose is also possible. In photosynthetic organisms, however, biosynthesis of carbohydrates takes place by the most prominent processes utilizing solar energy, in which hexoses generated from carbon dioxide and water are CONVERTED into starch, sucrose, cellulose and other polysaccharides.

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