Biochemistry Important One Liners Questions On Metabolism Of Carbohydrates

Name the five vitamins required by pyruvate dehydrogenase or -ketoglutarate dehydrogenase complex

Thiamine, riboflavin, lipoic acid, niacin, pantothenic acid,

Muscle glycogen does not directly contribute to blood glucose due to absence of the enyme

Absence of glucose 6-phosphatase

Ascorbic acid is not synthesized in man due to lack of the enzyme

L-Gulonolactone oxidase

The compound implicated in the development of cataract in diabetic patients is

Sorbitol

Galactosemia is mostly due to the deficiency of the enzyme

Galactose 1-phosphate uridyltransferase

The two amino acids that are never glucogenic are

Leucine and lysine

Substrate level phosphorylation in citric acid cycle is catalysed by the enzyme

Succinate thiokinase

The metabolic pathway concerned with the conversion of L-xylulose to D-xylulose is

Uronic acid pathway

The name of the protein that has been identified to serve as a primer for glycogen synthesis is

Glycogenin

The metabolite among the citric acid cycle intermediates performing a catalytic role

Oxaloacetate

Which enzymes in glycolysis catalyses an irreversible reaction

Pyruvate kinase , Phosphofructokinase, Hexokinase

Synthesis of 2, 3-bisphosphoglycerate occurs in the tissue namely.

Erythrocytes

The hormone that lowers cAMP concentration in liver cells is

Insulin

The number of ATP produced when a molecule of acetyl CoA is oxidized through citric acid cycle

12

The connecting link between HMP shunt and lipid synthesis is

NADPH