<prompt> Conversion of lactate to glucose requires all except ?Pyruvate carboxylasePhosphofructokinasePEP carboxykinaseGlucose-6-phosphatase  <response>: Ans. is b i.e., PhosphofructokinaseConversion of lactate to glucose is nothing else but gluconeogenesis.Seven of the reactions of glycolysis are reversible and are used in the synthesis of glucose by gluconeogenesis. Thus, seven enzymes are common to both glycolysis and gluconeogenesis: i Phosphohexose isomerase;ii Aldolase; iii Phosphotriose isomerase, iv Glyceraldehyde 3-phosphate dehydrogenase; v Phosphoglycerate kinase; vi Phosphoglycerate mutase; vii Enolase.Three reactions of glycolysis are irreversible which are circumvented in gluconeogenesis by four reactions. So, enzymes at these steps are different in glycolysis and gluconeogenesis.Reactions Enzyme in glycolysis Enzyme in gluconeogenesisGlucose - Glucose-6-P Hexokinaseglucokinase Glucose-6-phosphataseFructose-6-P - Fructose-1,6-BP Phosphofructokinase Fructose-1-6-bisphosphatasePhosphoenolpyruvate - Pyruvate Pyruvate kinase Pyruvate carboxylase PEP carboxykinase 