Aromatic amino acids can be detected by (A) Sakaguchi reaction (B) Millon-Nasse reaction (C) Hopkins-Cole reaction (D) Xanthoproteic reaction

Aromatic amino acids can be detected by (A) Sakaguchi reaction (B) Millon-Nasse reaction (C) Hopkins-Cole reaction (D) Xanthoproteic reaction
by

1 Answer

Answer :

Answer : D
by
selected

Related questions

Presence of arginine can be detected by (A) Sakaguchi reaction (B) Million-Nasse reaction (C) Hopkins-Cole reaction (D) Gas chromatography

Description : Presence of arginine can be detected by (A) Sakaguchi reaction (B) Million-Nasse reaction (C) Hopkins-Cole reaction (D) Gas chromatography

Last Answer : Answer : A

Xanthoproteic test is positive in proteins containing (A) Sulphur amino acids (B) α-Amino acids (C) Aromatic amino acids (D) Aliphatic amino acids

Description : Xanthoproteic test is positive in proteins containing (A) Sulphur amino acids (B) α-Amino acids (C) Aromatic amino acids (D) Aliphatic amino acids

Last Answer : Answer : C

Hopkins-Cole test is for identification of (A) Tyrosine (B) Tryptophan (C) Arginine (D) Cysteine

Description : Hopkins-Cole test is for identification of (A) Tyrosine (B) Tryptophan (C) Arginine (D) Cysteine

Last Answer : Answer : B

Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Description : Side chains of all following amino acids contain aromatic rings except (A) Phenyl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Description : Side chains of all amino acids contain aromatic rings except (A) Pheynl alanine (B) Alanine (C) Tyrosine (D) Tryptophan

Last Answer : Answer : B

Maple syrup urine diseases is an inborn error of metabolism of (A) Sulphur-containing amino acids (B) Aromatic amino acids (C) Branched chain amino acids (D) Dicarboxylic amino acids

Description : Maple syrup urine diseases is an inborn error of metabolism of (A) Sulphur-containing amino acids (B) Aromatic amino acids (C) Branched chain amino acids (D) Dicarboxylic amino acids

Last Answer : Answer : C

The enzyme trypsin is specific for peptide bonds of (A) Basic amino acids (B) Acidic amino acids (C) Aromatic amino acids (D) Next to small amino acid residues

Description : The enzyme trypsin is specific for peptide bonds of (A) Basic amino acids (B) Acidic amino acids (C) Aromatic amino acids (D) Next to small amino acid residues

Last Answer : Answer : A

Give the names of aromatic amino acids.

Description : Give the names of aromatic amino acids.

Last Answer : Phenylalanine and tyrosine.

Sakaguchi reaction is specific for (A) Guanidine group (B) Phenolic group (C) Carboxylic group (D) None of these

Description : Sakaguchi reaction is specific for (A) Guanidine group (B) Phenolic group (C) Carboxylic group (D) None of these

Last Answer : Answer : A

Sakaguchi reaction is answered by (A) Lysine (B) Ornithine (C) Arginine (D) Arginino succinic acid

Description : Sakaguchi reaction is answered by (A) Lysine (B) Ornithine (C) Arginine (D) Arginino succinic acid

Last Answer : Answer : C

Edman’s reaction can be used to (A) Determine the number of tyrosine residues in a protein (B) Determine the number of aromatic amino acid residues in a protein (C) Determine the amino acid sequence of a protein (D) Hydrolyse the peptide bonds in a protein

Description : Edman’s reaction can be used to (A) Determine the number of tyrosine residues in a protein (B) Determine the number of aromatic amino acid residues in a protein (C) Determine the amino acid sequence of a protein (D) Hydrolyse the peptide bonds in a protein

Last Answer : Answer : C

Which of the following statement(s) is/are true concerning metabolic derangements in sepsis and the systemic inflammatory response syndrome which may follow progressive shock? a. Alterations in glucose metabolism lead to the development of efficient substrate utilization b. A progressive rise in serum triglyceride levels result from less efficient clearance and increased hepatic lipogenesis c. A net negative nitrogen balance occurs due to the oxidative metabolism of proteins to meet energy needs d. The serum aromatic amino acids fall rapidly as they are actively used in oxidative metabolism

Description : Which of the following statement(s) is/are true concerning metabolic derangements in sepsis and the systemic inflammatory response syndrome which may follow progressive shock? a. Alterations in glucose ... The serum aromatic amino acids fall rapidly as they are actively used in oxidative metabolism

Last Answer : Answer: b, c A broad spectrum of metabolic abnormalities become apparent in sepsis and the systemic inflammatory response syndrome following shock. Disruption of the normal cycles of carbohydrate, ... acetyl coenzyme A. This results in reduced serum level of leucine, isoleucine and valine

Altering the amino acid profile in total parenteral nutrition solutions can be of benefit in certain conditions. Which of the following conditions are associated with a benefit by supplementation with the amino acid type listed? a. Acute renal failure and essential amino acids b. Hepatic failure and aromatic amino acids c. Short gut syndrome and glutamine d. Chronic renal failure and essential amino acids

Description : Altering the amino acid profile in total parenteral nutrition solutions can be of benefit in certain conditions. Which of the following conditions are associated with a benefit by supplementation with the ... c. Short gut syndrome and glutamine d. Chronic renal failure and essential amino acids

Last Answer : Answer: a, c In a number of conditions, altering the amino acid profile of the total parenteral nutrition solution can be of benefit. TPN with amino acids of high biologic value ... Glutamine-enriched TPN partially attenuates villous atrophy and may be useful in treatment of short gut syndrome

A modified amino acid solution with increased equimolar branched-chain amino acids and decreased aromatic amino acids has been proposed for patients with hepatic insufficiency. Which of the following statements is/are true? A. This formulation is proposed for the use of patients with fulminant hepatitis. B. Nitrogen balance is achieved in such patients with amounts of 40 gm. of amino acids per 24 hours. C. The use of 80 to 100 gm. of such solutions is associated with hepatic encephalopathy. D. In some studies of surgical patients, improvements in mortality have been reported.

Description : A modified amino acid solution with increased equimolar branched-chain amino acids and decreased aromatic amino acids has been proposed for patients with hepatic insufficiency. Which of the following ... D. In some studies of surgical patients, improvements in mortality have been reported.

Last Answer : Answer: D DISCUSSION: The use of modified amino acid solutions is based on the false neurotransmitter hypothesis of the cause of hepatic coma. According to this hypothesis, the imbalance ... in a group of patients with cirrhosis, decreasing morbidity and showing a trend toward decreased mortality

Which of the following amino acids has an aromatic R group? (a) Serine (b) Cysteine (c) Asparagine (d) Tyrosine

Description : Which of the following amino acids has an aromatic R group? (a) Serine (b) Cysteine (c) Asparagine (d) Tyrosine

Last Answer : Tyrosine

Guanidine group of argentine gives positive test with (A) Lead acetate (B) Sakaguchi reagent (C) Tricholoroacetic acid (D) Molisch’s reagent

Description : Guanidine group of argentine gives positive test with (A) Lead acetate (B) Sakaguchi reagent (C) Tricholoroacetic acid (D) Molisch’s reagent

Last Answer : Answer : B

What is the basis of xanthoproteic test?

Description : What is the basis of xanthoproteic test?

Last Answer : The ring systems in phenyl alanine, tyrosine and tryptophan will answer this test.

An enzyme involved in catabolism of catecholamines is (A) Dopa decarboxylase (B) Aromatic amino acid decarboxylase (C) Monoamine oxidase (D) Catechol oxidas

Description : An enzyme involved in catabolism of catecholamines is (A) Dopa decarboxylase (B) Aromatic amino acid decarboxylase (C) Monoamine oxidase (D) Catechol oxidas

Last Answer : Answer : C

The biosynthesis of both Catecholamine and serotonin require (A) Tyrosine hydroxylase (B) N-methyl transferase (C) Aromatic amino acid decarboxylase (D) Tryptophan pyrrolase

Description : The biosynthesis of both Catecholamine and serotonin require (A) Tyrosine hydroxylase (B) N-methyl transferase (C) Aromatic amino acid decarboxylase (D) Tryptophan pyrrolase

Last Answer : Answer : B

An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine

Description : An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine

Last Answer : Answer : B

An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine

Description : An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine

Last Answer : (B) Tyrosine

Nucleic acids can be detected by means of their absorption maxima near 260 nm. Their absorption in this range is due to (A) Proteins (B) Purines and pyrimidines (C) Ribose (D) Deoxyribose

Description : Nucleic acids can be detected by means of their absorption maxima near 260 nm. Their absorption in this range is due to (A) Proteins (B) Purines and pyrimidines (C) Ribose (D) Deoxyribose

Last Answer : Answer : B

Which of one ring in the structure of the following is aromatic? (A) Androgens (B) Estrogens (C) Cholesterol (D) Bile acids

Description : Which of one ring in the structure of the following is aromatic? (A) Androgens (B) Estrogens (C) Cholesterol (D) Bile acids

Last Answer : Answer : B

N-terminal amino acids of a polypeptide are estimated by (A) Edmann reaction (B) Sanger’s reagent (C) Formaldehyde test (D) Ninhydrine reaction

Description : N-terminal amino acids of a polypeptide are estimated by (A) Edmann reaction (B) Sanger’s reagent (C) Formaldehyde test (D) Ninhydrine reaction

Last Answer : Answer : A

How much is 1200 times 100 millon?

Description : How much is 1200 times 100 millon?

Last Answer : 120 billion

How do you write out three quarters millon in numbers?

Description : How do you write out three quarters millon in numbers?

Last Answer : It is: 750,000

The time taken by Sun to revolve around the center of our galaxy is------? A. 150 million years B. 250 million years (Answer) C. 300 millon years D. 350 millon years

Description : The time taken by Sun to revolve around the center of our galaxy is------? A. 150 million years B. 250 million years (Answer) C. 300 millon years D. 350 millon years

Last Answer : B. 250 million years (Answer)

Will adrenaline give a positive xanthoproteic test?

Description : Will adrenaline give a positive xanthoproteic test?

Last Answer : yes

A protein solution on warming with concentrated HNO3 may turn yellow. This test is called : (a) Xanthoproteic test (b) Ninhydrin test (c) Biuret test (d) Million's test

Description : A protein solution on warming with concentrated HNO3 may turn yellow. This test is called : (a) Xanthoproteic test (b) Ninhydrin test (c) Biuret test (d) Million's test

Last Answer : Xanthoproteic test

Which of the following tests is not used for testing proteins? (a) Ninhydrin test (b) Biuret test (c) Xanthoproteic test (d) Tollens' test

Description : Which of the following tests is not used for testing proteins? (a) Ninhydrin test (b) Biuret test (c) Xanthoproteic test (d) Tollens' test

Last Answer : Tollens' test

What other major medical institutions, besides Johns Hopkins, salary their doctors rather than pay on a fee for service basis?

Description : What other major medical institutions, besides Johns Hopkins, salary their doctors rather than pay on a fee for service basis?

Last Answer : Mayo is also salary-based. There is an argument (and a strong one) that salary-ing doctors is a good, good idea, because if you pay them by patients seen or by tests/etc proscribed, they ... large salaries to its doctors because it saves a lot of money by not running millions of needless tests.

What is the year of manufacture of a Hopkins Allen 12 gauge serial U5497?

Description : What is the year of manufacture of a Hopkins Allen 12 gauge serial U5497?

Last Answer : If the shotgun is marked Hopkins and Allen ManufacturingCompany, Norwich Conn. it was made between circa 1880-1885 and1898. If marked Hopkins and Allen Arms Company, it was manufacturedbetween 1898 and 1915. No records are available to give a moreexact date of manufacture.

What is the phone no. for sears pension service center in Hopkins MN. Need a 1099R tax form?

Description : What is the phone no. for sears pension service center in Hopkins MN. Need a 1099R tax form?

Last Answer : Not sure where this is located but the number for Sears PensionPlan is 1-800-953-5390. Medical benefits 1-877-254-6765

They experimented with light transmission cables through bundle of fibers and lead to the development of flexible fiberscope. ∙ A. Townes, Schawlow and Kao ∙ B. Maiman, Kao and Bockham ∙ C. Maurer, Kapron and Keck ∙ D. Van Heel, Hopkins and Kapany

Description : They experimented with light transmission cables through bundle of fibers and lead to the development of flexible fiberscope. ∙ A. Townes, Schawlow and Kao ∙ B. Maiman, Kao and Bockham ∙ C. Maurer, Kapron and Keck ∙ D. Van Heel, Hopkins and Kapany

Last Answer : D. Van Heel, Hopkins and Kapany

The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct? – HN – CH – CO – NH – CH – CO – NH – CH – CO – HN – CH – CO – CH2 OH CH2 SH CH2 OH CH2 CH2 CH2– COOH A B C D (a) D is the acidic amino acid-glutamic acid. (b) C is an aromatic amino acid-tryptophan. (c) A is the C-terminal amino acid and D is N-terminal amino acid. (d) A is a sulphur containing amino acid methionine.

Description : The figure shows a hypothetical tetrapeptide portion of a protein with parts labelled A-D. Which one of the following options is correct? - HN - CH - CO - NH - CH - CO - NH - CH - CO - ... -terminal amino acid and D is N-terminal amino acid. (d) A is a sulphur containing amino acid methionine.

Last Answer : (a) D is the acidic amino acid-glutamic acid.

Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

Description : Which of the following statements is false about aniline? (a) It is a primary aromatic amine. (b) It is a weak base which forms salts with acids. (c) It liberates nitrogen on treatment with ice-cold nitrous acid. (d) It can be prepared by the reduction of nitrobenzene with tin and HCl

Last Answer : It liberates nitrogen on treatment with ice-cold nitrous acid

Soap is (a) a mixture of salts of fatty acids (b) a salt of glycerol (c) a mixture of ethers (d) a mixture of aromatic ethers

Description : Soap is (a) a mixture of salts of fatty acids (b) a salt of glycerol (c) a mixture of ethers (d) a mixture of aromatic ethers

Last Answer : a mixture of salts of fatty acids

Fatty acids are (a) Unsaturated dicarboxylic acids (b) Long-chain alkanoic acids (c) Aromatic carboxylic acids (d) Aromatic dicarboxylic acids

Description : Fatty acids are (a) Unsaturated dicarboxylic acids (b) Long-chain alkanoic acids (c) Aromatic carboxylic acids (d) Aromatic dicarboxylic acids

Last Answer : Long-chain alkanoic acids

Can you change the lock combination on the Kenneth Cole Reaction Attache Briefcase?

Description : Can you change the lock combination on the Kenneth Cole Reaction Attache Briefcase?

Last Answer : Yes. It comes with directions that makes it easy to do.

What type organic macro molecule is form polymerization reaction between amino acids?

Description : What type organic macro molecule is form polymerization reaction between amino acids?

Last Answer : This macromolecule is a protein.

What type organic macro-molecule is form polymerization reaction between amino acids?

Description : What type organic macro-molecule is form polymerization reaction between amino acids?

Last Answer : This macromolecule is a protein.

The catalytic power of enzymes is due to (a) the presence of amino acids in their structures (b) their high molecular weight (c) their ability to lower the activation energy of the reaction (d) their limited solubility in water and other solvents

Description : The catalytic power of enzymes is due to (a) the presence of amino acids in their structures (b) their high molecular weight (c) their ability to lower the activation energy of the reaction (d) their limited solubility in water and other solvents

Last Answer : Ans:(c)

Which of the following reactions is suitable for the preparation of α-amino acids? (a) Schmidt reaction (b) Hofmann's degradation of amides (c) Strecker's synthesis (b) Reduction of nitro compounds

Description : Which of the following reactions is suitable for the preparation of α-amino acids? (a) Schmidt reaction (b) Hofmann's degradation of amides (c) Strecker's synthesis (b) Reduction of nitro compounds

Last Answer : Strecker's synthesis

Calcium absorption is inferred by (A) Fatty acids (B) Amino acids (C) Vitamin D (D) Vitamin B12

Description : Calcium absorption is inferred by (A) Fatty acids (B) Amino acids (C) Vitamin D (D) Vitamin B12

Last Answer : Answer : A

Degeneracy of the genetic code denotes the existence of (A) Base triplets that do not code for any amino acids (B) Codons consisting of only two bases (C) Codons that include one or more of the unusual bases (D) Multiple codons for a single amino acid

Description : Degeneracy of the genetic code denotes the existence of (A) Base triplets that do not code for any amino acids (B) Codons consisting of only two bases (C) Codons that include one or more of the unusual bases (D) Multiple codons for a single amino acid

Last Answer : Answer : B

Which of the following gives a positive Ninhydrin test? (A) Reducing sugar (B) Triglycerides (C) α-amino acids (D) Phospholipids

Description : Which of the following gives a positive Ninhydrin test? (A) Reducing sugar (B) Triglycerides (C) α-amino acids (D) Phospholipids

Last Answer : Answer : C

Selectins are proteins that can recognise specific (A) Carbohydrates (B) Lipids (C) Amino acids (D) Nucleotides

Description : Selectins are proteins that can recognise specific (A) Carbohydrates (B) Lipids (C) Amino acids (D) Nucleotides

Last Answer : Answer : A

Glycoproteins are marked for destruction by removal of their (A) Oligosaccharide prosthetic group (B) Sialic acid residues (C) Mannose residues (D) N-terminal amino acids

Description : Glycoproteins are marked for destruction by removal of their (A) Oligosaccharide prosthetic group (B) Sialic acid residues (C) Mannose residues (D) N-terminal amino acids

Last Answer : Answer : D

All the following statements about recognition of a codon on mRNA by an anticodon on tRNA are correct except (A) The recognition of the third base of the codon is not very precise (B) Imprecise recognition of the third base results in wobble (C) Wobble is partly responsible for the degeneracy of the genetic code (D) Wobble results in incorporation of incorrect amino acids in the protein

Description : All the following statements about recognition of a codon on mRNA by an anticodon on tRNA are correct except (A) The recognition of the third base of the codon is not very precise (B) ... degeneracy of the genetic code (D) Wobble results in incorporation of incorrect amino acids in the protein

Last Answer : Answer : D

All of the following statements about nonsense codons are true except (A) They do not code for amino acids (B) They act as chain termination signals (C) They are identical in nuclear and mitochondrial DNA (D) They have no complementary anticodons

Description : All of the following statements about nonsense codons are true except (A) They do not code for amino acids (B) They act as chain termination signals (C) They are identical in nuclear and mitochondrial DNA (D) They have no complementary anticodons

Last Answer : Answer : C