True Or False On Carbohydrates

Pyruvate is converted to oxaloacetate by pyruvate decarboxylase.

The osazone is formed by phenylhydrazine only.

Disacchariduria results in the absence of disaccharidase.

Fluoride inhibits pyruvate dehydrogenase.

Chondroitin sulphates have a marked capacity to hold water.

Ribose and Deoxyribose are important constituents of many coenzymes.

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

Glucuronic acid is not involved in detoxication reactions.

Galactose and fucose are also present in blood group substances.

Cis-trans isomerism occurs in compounds with double bonds.

PGE5 at low concentration stimulates cGMP accumulation.

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

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.

The citric acid cycle is amphibolic in nature.

The absorption of glucose is retarded in hypothyroidism.

Thyroid hormones may decrease the synthesis of adenylate cyclase.

Starch is a fructosan.

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

Cyclic AMP depresses phosphorylase activity.

Insulin stimulates phosphofructokinase.

Oxaloacetate inhibits succinate dehydrogenase.

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

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

Dihydroxyacetone phosphate is also converted to glucose in the liver.

Aldolase requires a coenzyme for its activity.

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

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

Fructose is actively transported.

Mannosamine is an important constituent of mucoprotein.

The aglycone may be -COOH containing substances.

Sucrose is also said to be “invert sugar”.

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

Disaccharides are absorbed and used in the body.

Succinate dehydrogenase takes the help of the coenzyme NAD+.

Gluconic acid on heating produces lactones.

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

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.

Glucose on reduction yields mannitol.

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

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

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

Hyaluronic acid does not occur in the skin.

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

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

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

Glycolysis in erythrocytes even under aerobic condition forms lactate.

Inulin produces colour with iodine.

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

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

The glycolytic activity is low when there is active gluconeogenesis.

Each glycogen molecule contains 5000 to 10000 glucose molecules.

Muscle phosphorylase is affected by glucagon.