True Or False On Carbohydrates

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

Disacchariduria results in the absence of disaccharidase.

Muscle phosphorylase is affected by glucagon.

Cis-trans isomerism occurs in compounds with double bonds.

Aldolase requires a coenzyme for its activity.

The citric acid cycle is amphibolic in nature.

Gluconic acid on heating produces lactones.

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

The absorption of glucose is retarded in hypothyroidism.

Fructose is actively transported.

Disaccharides are absorbed and used in the body.

Starch is a fructosan.

Dihydroxyacetone phosphate is also converted to glucose in the liver.

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

Galactose and fucose are also present in blood group substances.

Glycolysis in erythrocytes even under aerobic condition forms lactate.

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

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

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

PGE5 at low concentration stimulates cGMP accumulation.

The osazone is formed by phenylhydrazine only.

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

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

Glucuronic acid is not involved in detoxication reactions.

Sucrose is also said to be “invert sugar”.

Cyclic AMP depresses phosphorylase activity.

Thyroid hormones may decrease the synthesis of adenylate cyclase.

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

Chondroitin sulphates have a marked capacity to hold water.

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

The aglycone may be -COOH containing substances.

The glycolytic activity is low when there is active gluconeogenesis.

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

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

Mannosamine is an important constituent of mucoprotein.

Oxaloacetate inhibits succinate dehydrogenase.

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

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

Insulin stimulates phosphofructokinase.

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

Hyaluronic acid does not occur in the skin.

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

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.

Each glycogen molecule contains 5000 to 10000 glucose molecules.

Ribose and Deoxyribose are important constituents of many coenzymes.

Fluoride inhibits pyruvate dehydrogenase.

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

Succinate dehydrogenase takes the help of the coenzyme NAD+.

Pyruvate is converted to oxaloacetate by pyruvate decarboxylase.

Inulin produces colour with iodine.

Glucose on reduction yields mannitol.

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.