Description : An example of -amino acid not present in proteins but essential in mammalian metabolism is (A) 3-Amino 3-hydroxypropanoic acid (B) 2-Amino 3-hydroxybutanoic acid (C) 2-Amino 4-mercaptobutanoic acid (D) 2-Amino 3-mercaptopropanoic acid
Last Answer : (C) 2-Amino 4-mercaptobutanoic acid
Description : All proteins contain the (A) Same 20 amino acids (B) Different amino acids (C) 300 Amino acids occurring in nature (D) Only a few amino acids
Last Answer : (A) Same 20 amino acids
Description : In glucose the orientation of the —H and —OH groups around the carbon atom 5 adjacent to the terminal primary alcohol carbon determines (A) D or L series (B) Dextro or levorotatory (C) and anomers (D) Epimers
Last Answer : (A) D or L series
Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive Charge (D) All amino acids contain negatively charged side chains
Last Answer : (A) All amino acids contain both positive and negative charges
Description : Non essential amino acids (A) Are not components of tissue proteins (B) May be synthesized in the body from essential amino acids (C) Have no role in the metabolism (D) May be synthesized in the body in diseased states
Last Answer : (B) May be synthesized in the body from essential amino acids
Description : All the following are sulphur containing amino acids found in proteins except (A) Cysteine (B) Cystine (C) Methionine (D) Threonine
Last Answer : (D) Threonine
Description : Proteins contain (A) Only L- α - amino acids (B) Only D-amino acids (C) DL-Amino acids (D) Both (A) and (B)
Last Answer : Answer : A
Description : At neutral pH, a mixture of amino acids in solution would be predominantly: (A) Dipolar ions (B) Nonpolar molecules (C) Positive and monovalent (D) Hydrophobic
Last Answer : (A) Dipolar ions
Description : Polysaccharides are (A) Polymers (B) Acids (C) Proteins (D) Oils
Last Answer : (A) Polymers
Description : Enzyme catalyzed hydrolysis of proteins produces amino acids of the form: (A) D (B) L (C) DL (D) All of these
Last Answer : Answer : B
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
Description : An aromatic amino acid is (A) Lysine (B) Tyrosine (C) Taurine (D) Arginine
Last Answer : (B) Tyrosine
Description : An example of sulphur containing amino acid is (A) 2-Amino-3-mercaptopropanoic acid (B) 2-Amino-3-methylbutanoic acid (C) 2-Amino-3-hydroxypropanoic acid (D) Amino acetic acid
Last Answer : (A) 2-Amino-3-mercaptopropanoic acid
Description : Sulphur containing amino acid is (A) Methionine (B) Leucine (C) Valine (D) Asparagine
Last Answer : (A) Methionine
Description : The optically inactive amino acid is (A) Glycine (B) Serine (C) Threonine (D) Valine
Last Answer : (A) Glycine
Description : Erythromycin contains (A) Dimethyl amino sugar (B) Trimethyl amino sugar (C) Sterol and sugar (D) Glycerol and sugar
Last Answer : (A) Dimethyl amino sugar
Description : Enzyme catalyzed hydrolysis of proteins produces amino acid of the form (A) D (B) DL (C) L (D) Racemic
Last Answer : Answer : C
Description : Naturally occurring amino acids have (A) L-Configuration (B) D-Configuration (C) DL-Configuration (D) None of these
Description : Two sugars which differ from one another only in configuration around a single carbon atom are termed (A) Epimers (B) Anomers (C) Optical isomers (D) Stereoisomers
Last Answer : (A) Epimers
Description : The functions of plasma albumin are (A) Osmosis (B) Transport (C) Immunity (D) both (A )and (B)
Last Answer : (A) Osmosis
Description : Since the pK values for aspartic acid are 2.0, 3.9 and 10.0, it follows that the isoelectric (pH) is (A) 3.0 (B) 3.9 (C) 5.9 (D) 6.0
Last Answer : (A) 3.0
Description : pH (isoelectric pH) of alanine is (A) 6.02 (B) 6.6 (C) 6.8 (D) 7.2
Last Answer : (A) 6.02
Description : The sugar found in DNA is (A) Xylose (B) Ribose (C) Deoxyribose (D) Ribulose
Last Answer : (C) Deoxyribose
Description : The major sugar of insect hemolymph is (A) Glycogen (B) Pectin (C) Trehalose (D) Sucrose
Last Answer : (C) Trehalose
Description : A sugar alcohol is (A) Mannitol (B) Trehalose (C) Xylulose (D) Arabinose
Last Answer : (A) Mannitol
Description : The carbohydrate of the blood group substances is (A) Sucrose (B) Fucose (C) Arabinose (D) Maltose
Last Answer : (B) Fucose
Description : Compounds having the same structural formula but differing in spatial configuration are known as (A) Stereoisomers (B) Anomers (C) Optical isomers (D) Epimers
Last Answer : (A) Stereoisomers
Description : The most important epimer of glucose is (A) Galactose (B) Fructose (C) Arabinose (D) Xylose
Last Answer : (A) Galactose
Description : Isomers differing as a result of variations in configuration of the —OH and —H on carbon atoms 2, 3 and 4 of glucose are known as (A) Epimers (B) Anomers (C) Optical isomers (D) Steroisomers
Description : The number of isomers of glucose is (A) 2 (B) 4 (C) 8 (D) 16
Last Answer : (D) 16
Description : The pentose sugar present mainly in the heart muscle is (A) Lyxose (B) Ribose (C) Arabinose (D) Xylose
Last Answer : (A) Lyxose
Description : A pentose sugar is (A) Dihydroxyacetone (B) Ribulose (C) Erythrose (D) Glucose
Last Answer : (B) Ribulose
Description : A triose sugar is (A) Glycerose (B) Ribose (C) Erythrose (D) Fructose
Last Answer : (A) Glycerose
Description : The aldose sugar is (A) Glycerose (B) Ribulose (C) Erythrulose (D) Dihydoxyacetone
Description : The general formula of polysaccharides is (A) (C6H10O5)n (B) (C6H12O5)n (C) (C6H10O6)n (D) (C6H10O6)n
Last Answer : (A) (C6H10O5)n
Description : general formula of monosaccharides is (A) CnH2nOn (B) C2nH2On (C) CnH2O2n (D) CnH2nO2n
Last Answer : (A) CnH2nOn
Description : A characteristic of protein synthesis in both the archaea and eukarya is A.transcription and translation are coupled B.translation is inhibited by diphtheria toxin C.proteins are synthesized from D-, ... L-, isomers of amino acids D.the initiator tRNA is charged with N-formyl- methionine
Last Answer : C.proteins are synthesized from
Description : A characteristic of protein synthesis in both the archaea and eukarya is A- transcription and translation are coupled B- translation is inhibited by diphtheria toxin C- .proteins are synthesized from D-, rather than L-, isomers of amino acids D- the initiator tRNA is charged with N-formyl-methionine
Last Answer : .proteins are synthesized from D-, rather than L-, isomers of amino acids
Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive charge (D) All amino acids contain negatively charged side chains
Description : Archeal cells usually do not contain peptidoglycan, rather contain pseudo- peptidoglycanwhichis mainly composed of A-.N-acetylmuramic acid and L-amino acids B-.N-acetylmuramic acid and D-amino acids C-.N-acetyltalosaminuronic acid and D-amino acids D-N-acetyltalosaminuronic acid and L-amino acids
Last Answer : N-acetyltalosaminuronic acid and L-amino acids
Description : For biosynthesis of proteins (A) Amino acids only are required (B) Amino acids and nucleic acids only are required (C) Amino acid, nucleic acids and ATP only are required (D) Amino acids, nucleic acids, ATP, GTP, enzymes and activators are required
Last Answer : Answer : D
Description : Polymers of more than 100 amino acids are termed (A) Proteins (B) Polypeptides (C) Both (A) and (B) (D) None of these
Description : Selectins are proteins that can recognise specific (A) Carbohydrates (B) Lipids (C) Amino acids (D) Nucleotides
Description : Introns in genes (A) Encode the amino acids which are removed during post-translational modification (B) Encode signal sequences which are removed before secretion of the proteins (C) Are the non-coding sequences which are not translated (D) Are the sequences that intervene between two genes
Description : Transfer RNA transfers (A) Information from DNA to ribosomes (B) Information from mRNA to cytosol (C) Amino acids from cytosol to ribosomes (D) Proteins from ribosomes to cytosol
Description : Phrynoderma is a deficiency of (A) Essential fatty acids(B) Proteins (C) Amino acids (D) None of these
Description : Degradation of proteins to amino acids, glucose from carbohydrates and fatty acids from lipids is known as (A) Anabolism (B) Metabolism (C) Catabolism (D) Cretinism
Description : Xanthoproteic test is positive in proteins containing (A) Sulphur amino acids (B) α-Amino acids (C) Aromatic amino acids (D) Aliphatic amino acids
Description : Number of amino acids present in plants, animals and microbial proteins: (A) 20 (B) 80 (C) 150 (D) 200