All the following are ketones except (A) Xylulose (B) Ribolose (C) Erythrose (D) Fructose

All the following are ketones except (A) Xylulose (B) Ribolose (C) Erythrose (D) Fructose
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Answer : C
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An L-isomer of monosaccharide formed in human body is (A) L-fructose (B) L-Erythrose (C) L-Xylose (D) L-Xylulose

Description : An L-isomer of monosaccharide formed in human body is (A) L-fructose (B) L-Erythrose (C) L-Xylose (D) L-Xylulose

Last Answer : D

Xylulose-5-phosphate serves as a donar of active glycolaldehyde, the acceptor is (A) Erythrose 4-phosphate (B) Ribose 5-phosphate (C) Glyceraldehyde 3-phosphate (D) Sedoheptulose 7-phosphate

Description : Xylulose-5-phosphate serves as a donar of active glycolaldehyde, the acceptor is (A) Erythrose 4-phosphate (B) Ribose 5-phosphate (C) Glyceraldehyde 3-phosphate (D) Sedoheptulose 7-phosphate

Last Answer : Answer : A

The four membered aldose sugar phosphate formed in HMP shunt pathway is (A) Xylulose P (B) Erythrulose P (C) Erythrose P (D) Ribulose P

Description : The four membered aldose sugar phosphate formed in HMP shunt pathway is (A) Xylulose P (B) Erythrulose P (C) Erythrose P (D) Ribulose P

Last Answer : C

Which one of the following metabolites is not directly produced in the hexose monophosphate pathway? (A) Fructose-6-phosphate (B) Dihydroxy acetone phosphate (C) CO2 (D) Erythrose-4-phosphate

Description : Which one of the following metabolites is not directly produced in the hexose monophosphate pathway? (A) Fructose-6-phosphate (B) Dihydroxy acetone phosphate (C) CO2 (D) Erythrose-4-phosphate

Last Answer : Answer : B

The smallest monosaccharide having furanose ring structure is (A) Erythrose (B) Ribose (C) Glucose (D) Fructose

Description : The smallest monosaccharide having furanose ring structure is (A) Erythrose (B) Ribose (C) Glucose (D) Fructose

Last Answer : B

A triose sugar is (A) Glycerose (B) Ribose (C) Erythrose (D) Fructose

Description : A triose sugar is (A) Glycerose (B) Ribose (C) Erythrose (D) Fructose

Last Answer : A

A triose sugar is (A) Glycerose (B) Ribose (C) Erythrose (D) Fructose

Description : A triose sugar is (A) Glycerose (B) Ribose (C) Erythrose (D) Fructose

Last Answer : (A) Glycerose

The intermediate in hexose monophosphate shunt is (A) D-Ribolose (B) D-Arobinose (C) D-xylose (D) D-lyxose

Description : The intermediate in hexose monophosphate shunt is (A) D-Ribolose (B) D-Arobinose (C) D-xylose (D) D-lyxose

Last Answer : A

The first pentose formed in HMP shunt is (A) Ribose-5-phosphate (B) Ribulose-5-phosphate (C) Xylose-5-phosphate (D)Xylulose-5-phosphate

Description : The first pentose formed in HMP shunt is (A) Ribose-5-phosphate (B) Ribulose-5-phosphate (C) Xylose-5-phosphate (D)Xylulose-5-phosphate

Last Answer : Answer : B

Pentosuria is a rare hereditary disease is characterized by increased urinary excretion of (A) L-xylulose (B) Xylitol (C) Xylulose 5-phosphate (D) Ribose 5-phosphate

Description : Pentosuria is a rare hereditary disease is characterized by increased urinary excretion of (A) L-xylulose (B) Xylitol (C) Xylulose 5-phosphate (D) Ribose 5-phosphate

Last Answer : Answer : A

For conjugation with many enogenous and exogenous substances before elimination in urine, the uronic acid pathway provides (A) Active glucuronate (B) Gulonate (C) Xylulose (D) Xylitol

Description : For conjugation with many enogenous and exogenous substances before elimination in urine, the uronic acid pathway provides (A) Active glucuronate (B) Gulonate (C) Xylulose (D) Xylitol

Last Answer : Answer : A

In essential pentosuria, urine contains (A) D-Ribose (B) D-Xylulose (C) L-Xylulose (D) D-Xylose

Description : In essential pentosuria, urine contains (A) D-Ribose (B) D-Xylulose (C) L-Xylulose (D) D-Xylose

Last Answer : C

The sugar found in RNA is (A) Ribose (B) Deoxyribose (C) Ribulose (D) Erythrose

Description : The sugar found in RNA is (A) Ribose (B) Deoxyribose (C) Ribulose (D) Erythrose

Last Answer : A

A sugar alcohol is (A) Mannitol (B) Trehalose (C) Xylulose (D) Arabinose

Description : A sugar alcohol is (A) Mannitol (B) Trehalose (C) Xylulose (D) Arabinose

Last Answer : A

A pentose sugar is (A) Dihydroxyacetone (B) Ribulose (C) Erythrose (D) Glucose

Description : A pentose sugar is (A) Dihydroxyacetone (B) Ribulose (C) Erythrose (D) Glucose

Last Answer : B

A sugar alcohol is (A) Mannitol (B) Trehalose (C) Xylulose (D) Arabinose

Description : A sugar alcohol is (A) Mannitol (B) Trehalose (C) Xylulose (D) Arabinose

Last Answer : (A) Mannitol

A pentose sugar is (A) Dihydroxyacetone (B) Ribulose (C) Erythrose (D) Glucose

Description : A pentose sugar is (A) Dihydroxyacetone (B) Ribulose (C) Erythrose (D) Glucose

Last Answer : (B) Ribulose

Glucocorticoids increase the synthesis of all of the following except (A) Glucokinase (B) Glucose-6-phosphatase (C) Fructose-1, 6-biphosphatase (D) Pyruvate carboxylase

Description : Glucocorticoids increase the synthesis of all of the following except (A) Glucokinase (B) Glucose-6-phosphatase (C) Fructose-1, 6-biphosphatase (D) Pyruvate carboxylase

Last Answer : Answer : A

HMG CoA is formed in the metabolism of (A) Cholesterol, ketones and leucine (B) Cholesterol, fatty acid and Leucine (C) Lysine, Lecuine and Isoleucine (D) Ketones, Leucine and Lysine

Description : HMG CoA is formed in the metabolism of (A) Cholesterol, ketones and leucine (B) Cholesterol, fatty acid and Leucine (C) Lysine, Lecuine and Isoleucine (D) Ketones, Leucine and Lysine

Last Answer : Answer : A

The sugar present in DNA is – (1) Pentose (2) Xylulose (3) Hexose (4) Heptulose

Description : The sugar present in DNA is – (1) Pentose (2) Xylulose (3) Hexose (4) Heptulose

Last Answer : ( 1) Pentose Explanation: The sugar present in DNA is 2- deoxyribose, which is a pentose

DNA contains - (1) Pentose sugar (2) Hexose sugar (3) Erythrose sugar (4) Sedoheptulose sugar

Description : DNA contains - (1) Pentose sugar (2) Hexose sugar (3) Erythrose sugar (4) Sedoheptulose sugar

Last Answer : (1) Pentose sugar Explanation: Deoxyribonucleic Acid contains Pentose sugar.

The 5- carbon compounds produced during dark reaction of photosynthesis is (A) Ribose phosphate (B) Xylulose phosphate (C) Ribulose bis phosphate (D) Seda heptulose phosphate

Description : The 5- carbon compounds produced during dark reaction of photosynthesis is (A) Ribose phosphate (B) Xylulose phosphate (C) Ribulose bis phosphate (D) Seda heptulose phosphate

Last Answer : (C) Ribulose bis phosphate

DNA contains (1) Pentose sugar (2) Hexose sugar (3) Erythrose sugar (4) Sedoheptulose sugar

Description : DNA contains (1) Pentose sugar (2) Hexose sugar (3) Erythrose sugar (4) Sedoheptulose sugar

Last Answer : Pentose sugar

The sugar present in DNA is (1) Pentose (2) Xylulose (3) Hexose (4) Heptulose

Description : The sugar present in DNA is (1) Pentose (2) Xylulose (3) Hexose (4) Heptulose

Last Answer : Pentose

All of the following monosaccharides give the same osazone except (a) Galactose (b) Glucose (c) Fructose (d) Mannose

Description : All of the following monosaccharides give the same osazone except (a) Galactose (b) Glucose (c) Fructose (d) Mannose

Last Answer : Galactose

Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be determined by Beckmann rearra

Description : Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be determined by Beckmann rearra

Last Answer : Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be ... A. I B. II C. III D. IV

Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be determined by Beckmann rearra

Description : Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be determined by Beckmann rearra

Last Answer : Alldehydes and Ketones react with `NH_(2)OH` to form aldoximes and Ketoximes respectively. Configuration of these can be ... A. I B. II C. III D. IV

The total number of ketones (including stereo isomers ) with the molecular formula `C_(6)H_(12)O` is :

Description : The total number of ketones (including stereo isomers ) with the molecular formula `C_(6)H_(12)O` is :

Last Answer : The total number of ketones (including stereo isomers ) with the molecular formula `C_(6)H_(12)O` is : A. 4 B. 5 C. 6 D. 7

Assertion : Cyclohexa -2, 4-dieneone does not give positive test for ketones Reason : Enel form of Cyclohexa-2, 4-dieneone is more stable and it under

Description : Assertion : Cyclohexa -2, 4-dieneone does not give positive test for ketones Reason : Enel form of Cyclohexa-2, 4-dieneone is more stable and it under

Last Answer : Assertion : Cyclohexa -2, 4-dieneone does not give positive test for ketones Reason : Enel form of ... is false D. Assertion is false, Reason is true

Ketones - urine?

Description : Ketones - urine?

Last Answer : DefinitionA ketones urine test measures the presence or absence of ketones in the urine.Alternative NamesKetone bodies - urine; Urine ketonesHow the test is performedThe test requires a clean catch urine ... .For infants, thoroughly wash the area around the urethra. Open a urine collection bag

Serum ketones test?

Description : Serum ketones test?

Last Answer : DefinitionKetones are substances produced when fat cells break down in the blood. A serum ketone test is a measurement of how many ketones are in the blood.Alternative NamesAcetone bodies; Ketones - serum; ... to the needle. The elastic band is removed from your arm.Once the blood has been collecte

Why are aldehydes more reactive than ketones ?

Description : Why are aldehydes more reactive than ketones ? 

Last Answer : Ans. It is because of 2 reasons : The carboxyl compounds (both aldehydes & ketones) undergo nucleophilic addition reaction. (i) + I effect : The alkyl group in ketones due to their e- ... its reactivity. (ii) Steric hindrance : Due to steric hindrance in ketones, they are less reactive.

A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of (a) fats (b) amino acids (c) glucose (d) ketones.

Description : A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of (a) fats (b) amino acids (c) glucose (d) ketones.

Last Answer : d) ketones.

Which of the following statements is NOT correct : (a) Tollens' test is given by both aliphatic and aromatic aldehydes. (b) Fehling's test is given by aliphatic aldehydes. It is not given by aromatic aldehydes. (c) Iodoform test is given by methyl ketones and acetaldehydes. (d) Lucas test is given by both aliphatic and aromatic aldehydes

Description : Which of the following statements is NOT correct : (a) Tollens' test is given by both aliphatic and aromatic aldehydes. (b) Fehling's test is given by aliphatic aldehydes. It is not given ... given by methyl ketones and acetaldehydes. (d) Lucas test is given by both aliphatic and aromatic aldehydes

Last Answer : Lucas test is given by both aliphatic and aromatic aldehydes

Which of the following characterizes the reactions of aldehydes and ketones? (a) electrophilic addition (b) electrophilic substitution (c) nucleophilic acyl substitution (d) nucleophilic addition; free radical addition

Description : Which of the following characterizes the reactions of aldehydes and ketones? (a) electrophilic addition (b) electrophilic substitution (c) nucleophilic acyl substitution (d) nucleophilic addition; free radical addition

Last Answer : nucleophilic addition; free radical addition

Aldehydes can be distinguished from ketones by using (a) Ammoniacal AgNO3 solution (b) Phenylhydrazine (c) Saturated NaHSO3 solution (d) Thionyl chloride

Description : Aldehydes can be distinguished from ketones by using (a) Ammoniacal AgNO3 solution (b) Phenylhydrazine (c) Saturated NaHSO3 solution (d) Thionyl chloride

Last Answer : Ammoniacal AgNO3 solution

Aldehydes undergo oxidation with KMnO4/H+ to give (a) Alcohols (b) Acetals (c) Ketones (d) Acids

Description : Aldehydes undergo oxidation with KMnO4/H+ to give (a) Alcohols (b) Acetals (c) Ketones (d) Acids

Last Answer : Acids

Which of the following reagents will react readily with both aldehydes and ketones? (a) Grignard reagent (b) Fehling's reagent (c) Tollens' reagent (d) Schiff's reagen

Description : Which of the following reagents will react readily with both aldehydes and ketones? (a) Grignard reagent (b) Fehling's reagent (c) Tollens' reagent (d) Schiff's reagen

Last Answer : Grignard reagent

Which statement about the carbonyl group of ketones and aldehydes is true? I. It can attract nucleophiles. II. It can attract electrophiles. III. It tends to undergo addition reactions. IV. It tends to undergo substitution reactions. (a) I and III (b) II and IV (c) I, II, and III (d) I, III, and IV

Description : Which statement about the carbonyl group of ketones and aldehydes is true? I. It can attract nucleophiles. II. It can attract electrophiles. III. It tends to undergo addition reactions. IV. It tends to undergo substitution reactions. (a) I and III (b) II and IV (c) I, II, and III (d) I, III, and IV

Last Answer : I, II, and III

Ketones are prepared by the oxidation of (a) Primary alcohol (b) Secondary alcohol (c) Tertiary alcohol (d) None of these

Description : Ketones are prepared by the oxidation of (a) Primary alcohol (b) Secondary alcohol (c) Tertiary alcohol (d) None of these

Last Answer : Secondary alcohol

Which action best accounts for the solubility of aldehydes and ketones in water? (a) Polar interactions between solute molecules. (b) H-bonding between solute molecules. (c) Van der waals forces (d) H-bonding between solute and solvent molecules

Description : Which action best accounts for the solubility of aldehydes and ketones in water? (a) Polar interactions between solute molecules. (b) H-bonding between solute molecules. (c) Van der waals forces (d) H-bonding between solute and solvent molecules

Last Answer : H-bonding between solute and solvent molecules

The melting points of aldehydes and ketones tend to : (a) decrease with increasing molecular weight. (b) increase with increasing molecular weight. (c) remain unchanged with increasing molecular weight. (d) be unpredictable due to resonance

Description : The melting points of aldehydes and ketones tend to : (a) decrease with increasing molecular weight. (b) increase with increasing molecular weight. (c) remain unchanged with increasing molecular weight. (d) be unpredictable due to resonance

Last Answer : increase with increasing molecular weight.

What property of low-molecular weight aldehydes and ketones accounts for the magnitude of their boiling points? (a) The ability to form strong H-bonds between their molecules. (b) The ability of the carbonyl oxygen to form H-bonds with other carbonyl groups. (c) The ability of the polar carbonyl group to attract other polar molecules. (d) The ability of the carbonyl group to attract electrophiles and form bonds.

Description : What property of low-molecular weight aldehydes and ketones accounts for the magnitude of their boiling points? (a) The ability to form strong H-bonds between their molecules. (b) The ability of ... other polar molecules. (d) The ability of the carbonyl group to attract electrophiles and form bonds.

Last Answer : The ability of the polar carbonyl group to attract other polar molecules.

Ketones react with Grignard reagents to form an addition product which on hydrolysis gives a (a) Primary alcohol (b) Tertiary alcohol (c) Secondary alcohol (d) Ketal

Description : Ketones react with Grignard reagents to form an addition product which on hydrolysis gives a (a) Primary alcohol (b) Tertiary alcohol (c) Secondary alcohol (d) Ketal

Last Answer : Tertiary alcohol

Foaming is caused by the formation of ___________ a) Acids b) Alcohols c) Oils and alkalis d) Ketones

Description : Foaming is caused by the formation of ___________ a) Acids b) Alcohols c) Oils and alkalis d) Ketones

Last Answer : c) Oils and alkalis

The conversion of secondary alcohol to ketones in presence of aluminium isopropoxide and acetone as solvent is? a. Canizarro reaction b. Oppenauer oxidation c. Suzuki reaction d. Aldol Condensation

Description : The conversion of secondary alcohol to ketones in presence of aluminium isopropoxide and acetone as solvent is? a. Canizarro reaction b. Oppenauer oxidation c. Suzuki reaction d. Aldol Condensation

Last Answer : b. Oppenauer oxidation

Ketones are organic compounds. Name the functional group that all ketone molecules contain.

Description : Ketones are organic compounds. Name the functional group that all ketone molecules contain.

Last Answer : ANSWER: CARBONYL GROUP pr C DOUBLE BOND O

Which of the following organ prefers fructose to glucose (A) Liver (B) Testes (C) Pancreas (D) Heart

Description : Which of the following organ prefers fructose to glucose (A) Liver (B) Testes (C) Pancreas (D) Heart

Last Answer : Answer : B

Insulin increases the activity of (A) Pyruvate kinase (B) Phosphorylase (C) Triacylglycerol kinase (D) Fructose 2, 6-bisphosphatase

Description : Insulin increases the activity of (A) Pyruvate kinase (B) Phosphorylase (C) Triacylglycerol kinase (D) Fructose 2, 6-bisphosphatase

Last Answer : Answer : A

Hyperglycemic effect of glucocorticoids is due to (A) Inactivation of protein phosphatase (B) Inactivation of fructose 1,6-biphosphatase (C) Stimulation of synthesis of pyruvate carboxylase (D) Stimulation of synthesis of eltroxykinase

Description : Hyperglycemic effect of glucocorticoids is due to (A) Inactivation of protein phosphatase (B) Inactivation of fructose 1,6-biphosphatase (C) Stimulation of synthesis of pyruvate carboxylase (D) Stimulation of synthesis of eltroxykinase

Last Answer : Answer : C