True Or False On Carbohydrates

The separation of optically active isomers from a racemic mixture is called resolution.

Conversion of phosphorylase b to phosphorylase a signifies the mechanism for increasing glycogenolysis.

Under anaerobic conditions, one molecule of glucose produces 8 ATP.

The citric acid cycle is amphibolic in nature.

The enzymes of the TCA cycle are located at the cytosol.

Gluconic acid on heating produces lactones.

In essential pentosuria, large quantities of L-xylulose appear in the urine.

Cis-trans isomerism occurs in compounds with double bonds.

Ribose and Deoxyribose are important constituents of many coenzymes.

Fructose is actively transported.

The amino sugars are formed by the replacement of the hydroxyl group attached to carbon atom 3 of the sugar by an amino group.

Oxaloacetate inhibits succinate dehydrogenase.

Dihydroxyacetone phosphate is also converted to glucose in the liver.

Glucuronic acid is not involved in detoxication reactions.

The osazone is formed by phenylhydrazine only.

Insulin stimulates phosphofructokinase.

Fluoride inhibits pyruvate dehydrogenase.

Sucrose is also said to be “invert sugar”.

One molecule of acetyl-CoA in TCA cycle for complete oxidation forms 12 ATP.

S-acetyl lipoate reacts with coenzyme A in presence of dihydrolipoyl transacetylase.

Pyruvate is converted to oxaloacetate by pyruvate decarboxylase.

CO2 formed in HMP shunt is utilized for the synthesis of fatty acids and purine bases, etc.

Galactose and fucose are also present in blood group substances.

PGE5 at low concentration stimulates cGMP accumulation.

When the OH group around the carbon atom adjacent to the terminal primary alcohol carbon is on the right, the sugar is a member of L-series.

Disacchariduria results in the absence of disaccharidase.

Glycolysis in erythrocytes even under aerobic condition forms lactate.

The glucogenic amino acids are converted to the intermediates of TCA cycle.

The reduced NADP produced in HMP shunt is required for ketone bodies formation.

Isomers formed as a result of interchange of the -OH and -H on carbon atoms 2, 3 and 4 of glucose are known as epimers.

Disaccharides are absorbed and used in the body.

The aglycone may be -COOH containing substances.

Each glycogen molecule contains 5000 to 10000 glucose molecules.

Muscle phosphorylase is affected by glucagon.

Succinate dehydrogenase takes the help of the coenzyme NAD+.

Chondroitin sulphates have a marked capacity to hold water.

Glucose-6-phosphate is not an important compound in the metabolic pathway.

In the maltose molecule, there is one 0-1, 2 glucosidic linkages.

Starch is a fructosan.

Inulin produces colour with iodine.

Acetyl-CoA is permeable to pass through the mitochondrial membrane.

In amylopectin, each branch is at an interval of 24-30 glucose units.

Mannosamine is an important constituent of mucoprotein.

The absorption of glucose is retarded in hypothyroidism.

Hyaluronic acid does not occur in the skin.

Cyclic AMP depresses phosphorylase activity.

Citrate synthetase forms citrate in the presence of the coenzyme CoA.

The glycolytic activity is low when there is active gluconeogenesis.

Thyroid hormones may decrease the synthesis of adenylate cyclase.

In mammals, the liver and the muscles are the principal organs for gluconeogenesis.

Glucose on reduction yields mannitol.

Aldolase requires a coenzyme for its activity.