Group that reacts in the Biuret test: (A) Peptide (B) Amino group (C) Carboxylic group (D) Aldehyde group

Group that reacts in the Biuret test: (A) Peptide (B) Amino group (C) Carboxylic group (D) Aldehyde group
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A protein reacts with biuret reagent which indicates 2 or more (A) Blood clotting (B) Peptide bond (C) Disulphide bonds (D) Hydrophobic bonds

Description : A protein reacts with biuret reagent which indicates 2 or more (A) Blood clotting (B) Peptide bond (C) Disulphide bonds (D) Hydrophobic bonds

Last Answer : Answer : B

Biuret test is specific for (A) Two peptide linkage (B) Phenolic group (C) Imidazole ring (D) None of these

Description : Biuret test is specific for (A) Two peptide linkage (B) Phenolic group (C) Imidazole ring (D) None of these

Last Answer : Answer : A

From two amino acids peptide bond formation involves removal of one molecule of (A) Water (B) Ammonia (C) Carbondioxide (D) Carboxylic acid

Description : From two amino acids peptide bond formation involves removal of one molecule of (A) Water (B) Ammonia (C) Carbondioxide (D) Carboxylic acid

Last Answer : Answer : A

Chlorophyll a molecule at its carbon atom 3 of the pyrrole ring II has one of the following (a) carboxylic group (b) magnesium (c) aldehyde group (d) methyl group

Description : Chlorophyll a molecule at its carbon atom 3 of the pyrrole ring II has one of the following (a) carboxylic group (b) magnesium (c) aldehyde group (d) methyl group

Last Answer : d) methyl group.

Proteins react with biuret reagent which is suggestive of 2 or more (A) Hydrogen bonds (B) Peptide bonds (C) Disulphide bonds (D) Hydrophobic bonds

Description : Proteins react with biuret reagent which is suggestive of 2 or more (A) Hydrogen bonds (B) Peptide bonds (C) Disulphide bonds (D) Hydrophobic bonds

Last Answer : Answer : B

Will amino acids give a positive biuret test?

Description : Will amino acids give a positive biuret test?

Last Answer : No. This needs a minimum of two peptide bonds.

If the amino group and a carboxylic group of the amino acid are attached to same carbon atom, the amino acid is called as (A) Alpha (B) Beta (C) Gamma (D) Epsilon

Description : If the amino group and a carboxylic group of the amino acid are attached to same carbon atom, the amino acid is called as (A) Alpha (B) Beta (C) Gamma (D) Epsilon

Last Answer : Answer : A

If the amino group and a carboxylic group of the amino acid are attached to same carbon atom, the amino acid is called (A) Alpha (B) Beta (C) Gamma (D) Delta

Description : If the amino group and a carboxylic group of the amino acid are attached to same carbon atom, the amino acid is called (A) Alpha (B) Beta (C) Gamma (D) Delta

Last Answer : Answer : A

The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Description : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Last Answer : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary ... final product is A. B. C. D.

The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Description : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Last Answer : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary ... C. step III D. step I and II both

The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Description : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Last Answer : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary ... final product is A. B. C. D.

The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Description : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary alcohol is known as cannizzaro reaction.

Last Answer : The conversion of aldehyde having no alpha hydrogen to a mixture to a mixture of carboxylic acid and primary ... C. step III D. step I and II both

Which of the following is the correct ranking in decreasing order of relative Boiling Point of carbonyl containing compounds? (a) primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone (b) ester > carboxylic acid >> amide ~ acyl chloride ~ aldehyde ~ ketone (c) aldehyde ~ ketone > carboxylic acid >> ester ~ acyl chloride ~ amide(d) carboxylic acid > amide >> ester ~ acyl chloride ~ aldehyde ~ ketone

Description : Which of the following is the correct ranking in decreasing order of relative Boiling Point of carbonyl containing compounds? (a) primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone ... chloride ~ amide (d) carboxylic acid > amide >> ester ~ acyl chloride ~ aldehyde ~ ketone

Last Answer : primary amide > carboxylic acid >> ester ~ acyl chloride ~ aldehyde ~ ketone

Oxidation of a secondary alcohol with K2Cr2O7/H+ produces (a) a carboxylic acid (b) a ketone (c) an aldehyde (d) an ester

Description : Oxidation of a secondary alcohol with K2Cr2O7/H+ produces (a) a carboxylic acid (b) a ketone (c) an aldehyde (d) an ester

Last Answer : a ketone

Dry ice on reaction with GR gives_______ a) Ester b) Carboxylic acid c) Aldehyde d) Ketone

Description : Dry ice on reaction with GR gives_______ a) Ester b) Carboxylic acid c) Aldehyde d) Ketone

Last Answer : b) Carboxylic acid

Cyclohexanone is an example of: w) an aldehyde x) a carboxylic acid y) an alkyne z) a ketone

Description : Cyclohexanone is an example of: w) an aldehyde x) a carboxylic acid y) an alkyne z) a ketone

Last Answer : ANSWER: Z -- A KETONE 

Indole group of tryptophan responses positively to (A) Glyoxylic acid (B) Schiff’s reagent (C) Biuret test (D) Resorcinol test

Description : Indole group of tryptophan responses positively to (A) Glyoxylic acid (B) Schiff’s reagent (C) Biuret test (D) Resorcinol test

Last Answer : Answer : A

The useful reagent for detection of amino acids is (A) Molisch reagent (B) Dichlorophenol Indophenol (C) Ninhydrin (D) Biuret

Description : The useful reagent for detection of amino acids is (A) Molisch reagent (B) Dichlorophenol Indophenol (C) Ninhydrin (D) Biuret

Last Answer : Answer : C

Protein is a polymer of (A) Sugars (B) Phenols (C) Amino acids (D) Carboxylic acids

Description : Protein is a polymer of (A) Sugars (B) Phenols (C) Amino acids (D) Carboxylic acids

Last Answer : Answer : C

Amino acid with side chain containing basic groups is (A) 2-Amino 5-guanidovaleric acid (B) 2-Pyrrolidine carboxylic acid (C) 2-Amino 3-mercaptopropanoic acid (D) 2-Amino propanoic acid

Description : Amino acid with side chain containing basic groups is (A) 2-Amino 5-guanidovaleric acid (B) 2-Pyrrolidine carboxylic acid (C) 2-Amino 3-mercaptopropanoic acid (D) 2-Amino propanoic acid

Last Answer : Answer : A

Amino acid with side chain containing basic groups is (A) 2-Amino 5-guanidovaleric acid (B) 2-Pyrrolidine carboxylic acid (C) 2-Amino 3-mercaptopropanoic acid (D) 2-Amino propanoic acid

Description : Amino acid with side chain containing basic groups is (A) 2-Amino 5-guanidovaleric acid (B) 2-Pyrrolidine carboxylic acid (C) 2-Amino 3-mercaptopropanoic acid (D) 2-Amino propanoic acid

Last Answer : (A) 2-Amino 5-guanidovaleric acid

When semicarbazide reacts with a ketone (or aldehyde) to form semicarbazone. Only one nitrogen atom of semicarbazide acts as a nucleophile and attack

Description : When semicarbazide reacts with a ketone (or aldehyde) to form semicarbazone. Only one nitrogen atom of semicarbazide acts as a nucleophile and attack

Last Answer : When semicarbazide reacts with a ketone (or aldehyde) to form semicarbazone. Only one ... atoms of semicarbazide are relatively non nucleophilic ?

Which of the following is correct? (a) When a Grignard reagent reacts with a ketone, the addition product is a primary alcohol. (b) When a Grignard reagent reacts with a ketone, the addition product is a secondaryalcoho(c) When a Grignard reagent reacts with a aldehyde, the addition product is a tertiary alcohol. (d) None of the above are correct.l

Description : Which of the following is correct? (a) When a Grignard reagent reacts with a ketone, the addition product is a primary alcohol. (b) When a Grignard reagent reacts with a ketone, the addition product ... with a aldehyde, the addition product is a tertiary alcohol. (d) None of the above are correct.

Last Answer : None of the above are correct.

Ethylmagnesium iodide reacts with formaldehyde to give a product which on acid-hydrolysis forms : (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol

Description : Ethylmagnesium iodide reacts with formaldehyde to give a product which on acid-hydrolysis forms : (a) an aldehyde (b) a primary alcohol (c) a ketone (d) a secondary alcohol

Last Answer : a primary alcohol

Glycine is a unique amino acid because it (a) has no chiral carbon (b) has a sulfur containing R group (c) cannot form a peptide bond (d) is an essential amino acid

Description : Glycine is a unique amino acid because it (a) has no chiral carbon (b) has a sulfur containing R group (c) cannot form a peptide bond (d) is an essential amino acid

Last Answer : has no chiral carbon

Carboxylic acid reacts with halogen in presence of red P to gives__________ a) α-halogen acids b) β-halogen acid c) Acid halide d) Dicarboxylic acid

Description : Carboxylic acid reacts with halogen in presence of red P to gives__________ a) α-halogen acids b) β-halogen acid c) Acid halide d) Dicarboxylic acid

Last Answer : a) α-halogen acids

Biuret reaction is specific for (A) –CONH-linkages (B) –CSNH2 group (C) –(NH)NH2 group (D) All of these

Description : Biuret reaction is specific for (A) –CONH-linkages (B) –CSNH2 group (C) –(NH)NH2 group (D) All of these

Last Answer : Answer : A

Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Description : Whcih of the following hormone is a peptide of less than ten amino acids? (A) Insulin (B) Growth hormone (C) Oxytocin (D) Parathyroid hormone 228 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland (C) It is the precursor of ACTH and melatonin (D) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY

Description : All the following statements about proopiomelanocortin are true except (A) It is made up of 285 amino acids (B) It is synthesised in pars intermedia and anterior lobe of pituitary gland ... ) It is the precursor of corticotropin like intermediate lobe peptide and endorphins 218 MCQs IN BIOCHEMISTRY

Last Answer : Answer : C

The number of amino acids in the peptide hormone calcitonin is (A) 16 (B) 24 (C) 32 (D) 40

Description : The number of amino acids in the peptide hormone calcitonin is (A) 16 (B) 24 (C) 32 (D) 40

Last Answer : Answer : C

A growing peptide in a ribosome can not be shifted to the adjacent ribosome because (A) It is firmly attached (B) It will get the amino acid cleaved (C) The gap between the ribosomes is too big for a shift (D) The adjacent ribosomes have different composition

Description : A growing peptide in a ribosome can not be shifted to the adjacent ribosome because (A) It is firmly attached (B) It will get the amino acid cleaved (C) The gap between the ribosomes is too big for a shift (D) The adjacent ribosomes have different composition

Last Answer : Answer : C

The only correct statement about chymotrypsin is (A) It is formed from trypsin (B) Carboxypeptidase converts trypsin into chymotrypsin (C) Its optimum pH is around 7 (D) It hydrolyses peptide bonds involving basic amino acids

Description : The only correct statement about chymotrypsin is (A) It is formed from trypsin (B) Carboxypeptidase converts trypsin into chymotrypsin (C) Its optimum pH is around 7 (D) It hydrolyses peptide bonds involving basic amino acids

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

Chymotrypsin is specific for peptide bonds containing (A) Uncharged amino acid residues (B) Acidic amino acids (C) Basic amino acid (D) Small amino acid residues

Description : Chymotrypsin is specific for peptide bonds containing (A) Uncharged amino acid residues (B) Acidic amino acids (C) Basic amino acid (D) Small amino acid residues

Last Answer : Answer : A

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

Ninhydrin with evolution of CO2 forms a blue complex with (A) Peptide bond (B) α-Amino acids (C) Serotonin (D) Histamine

Description : Ninhydrin with evolution of CO2 forms a blue complex with (A) Peptide bond (B) α-Amino acids (C) Serotonin (D) Histamine

Last Answer : Answer : B

What are the Reaction of amino acid using ninhydrin and biuret reagent?

Description : What are the Reaction of amino acid using ninhydrin and biuret reagent?

Last Answer : What is the answer ?

Which disaccharide has no free aldehyde or ketone group?

Description : Which disaccharide has no free aldehyde or ketone group?

Last Answer : Sucrose.

The protein which does not answer the aldehyde test is.

Description : The protein which does not answer the aldehyde test is.

Last Answer : Gelatin.

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

What samples gives a positive test with biuret test?

Description : What samples gives a positive test with biuret test?

Last Answer : Biuret test is for peptide bonds.

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 is the peptide bond that connects amino acids in proteins? -Biology

Description : What is the peptide bond that connects amino acids in proteins? -Biology

Last Answer : answer:

What is lost from amino acids in the formation of a peptide bond? -Biology

Description : What is lost from amino acids in the formation of a peptide bond? -Biology

Last Answer : answer:

What two elements are connected in a peptide bond of 2 amino acids? -Biology

Description : What two elements are connected in a peptide bond of 2 amino acids? -Biology

Last Answer : answer:

Assertion `:` Pancreatic amylase digest protein to amino acid. Reason `:` Pancreatic amylase breaks the peptide bond of protein.

Description : Assertion `:` Pancreatic amylase digest protein to amino acid. Reason `:` Pancreatic amylase breaks the peptide bond of protein.

Last Answer : Assertion `:` Pancreatic amylase digest protein to amino acid. Reason `:` Pancreatic amylase breaks the ... D. If both Assertion & Reason are false.

Which is a 32-amino-acid water-soluble peptide hormone ?

Description : Which is a 32-amino-acid water-soluble peptide hormone ?

Last Answer : Which is a 32-amino-acid water-soluble peptide hormone ? A. Gastrin B. Calcitonin C. Glucagon D. Insulin

What organelles form peptide bonds between amino acids?

Description : What organelles form peptide bonds between amino acids?

Last Answer : Ribosomes. They are constructed from protein themselves, but, more germane to the question, they are also partially composed of catalytic RNA, which forges the peptide bonds.

What organelles form peptide bonds between amino acids?

Description : What organelles form peptide bonds between amino acids?

Last Answer : Ribosomes. They are constructed from protein themselves, but, more germane to the question, they are also partially composed of catalytic RNA, which forges the peptide bonds.