True Or False On Carbohydrates

Sucrose is also said to be “invert sugar”.

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

Pyruvate is converted to oxaloacetate by pyruvate decarboxylase.

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

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

The aglycone may be -COOH containing substances.

Galactose and fucose are also present in blood group substances.

Hyaluronic acid does not occur in the skin.

Aldolase requires a coenzyme for its activity.

The absorption of glucose is retarded in hypothyroidism.

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.

Ribose and Deoxyribose are important constituents of many coenzymes.

Glycolysis in erythrocytes even under aerobic condition forms lactate.

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.

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

Starch is a fructosan.

Cyclic AMP depresses phosphorylase activity.

The osazone is formed by phenylhydrazine only.

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

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

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.

Mannosamine is an important constituent of mucoprotein.

The glycolytic activity is low when there is active gluconeogenesis.

Insulin stimulates phosphofructokinase.

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

Thyroid hormones may decrease the synthesis of adenylate cyclase.

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

Muscle phosphorylase is affected by glucagon.

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

Cis-trans isomerism occurs in compounds with double bonds.

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

Gluconic acid on heating produces lactones.

Oxaloacetate inhibits succinate dehydrogenase.

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

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

Glucuronic acid is not involved in detoxication reactions.

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

Inulin produces colour with iodine.

PGE5 at low concentration stimulates cGMP accumulation.

Each glycogen molecule contains 5000 to 10000 glucose molecules.

Disacchariduria results in the absence of disaccharidase.

Fructose is actively transported.

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

The citric acid cycle is amphibolic in nature.

Chondroitin sulphates have a marked capacity to hold water.

Dihydroxyacetone phosphate is also converted to glucose in the liver.

Fluoride inhibits pyruvate dehydrogenase.

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

Disaccharides are absorbed and used in the body.

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

Succinate dehydrogenase takes the help of the coenzyme NAD+.