True Or False On Carbohydrates

Glycolysis in erythrocytes even under aerobic condition forms lactate.

Chondroitin sulphates have a marked capacity to hold water.

Thyroid hormones may decrease the synthesis of adenylate cyclase.

Fluoride inhibits pyruvate dehydrogenase.

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

Muscle phosphorylase is affected by glucagon.

Fructose is actively transported.

Mannosamine is an important constituent of mucoprotein.

Glucuronic acid is not involved in detoxication reactions.

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

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

Aldolase requires a coenzyme for its activity.

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

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

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.

The aglycone may be -COOH containing substances.

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

Oxaloacetate inhibits succinate dehydrogenase.

Sucrose is also said to be “invert sugar”.

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

Starch is a fructosan.

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

Cyclic AMP depresses phosphorylase activity.

Glucose on reduction yields mannitol.

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

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

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.

The glycolytic activity is low when there is active gluconeogenesis.

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

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

Disacchariduria results in the absence of disaccharidase.

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

Inulin produces colour with iodine.

The citric acid cycle is amphibolic in nature.

Cis-trans isomerism occurs in compounds with double bonds.

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

Ribose and Deoxyribose are important constituents of many coenzymes.

The absorption of glucose is retarded in hypothyroidism.

Galactose and fucose are also present in blood group substances.

Succinate dehydrogenase takes the help of the coenzyme NAD+.

Insulin stimulates phosphofructokinase.

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

Gluconic acid on heating produces lactones.

Hyaluronic acid does not occur in the skin.

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

The osazone is formed by phenylhydrazine only.

Disaccharides are absorbed and used in the body.

Pyruvate is converted to oxaloacetate by pyruvate decarboxylase.

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

Dihydroxyacetone phosphate is also converted to glucose in the liver.