Recent questions tagged endocrinology

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 : 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 : 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 : The functions of plasma albumin are (A) Osmosis (B) Transport (C) Immunity (D) both (A )and (B)

Last Answer : (A) Osmosis

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

Last Answer : (B) Tyrosine

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 : 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 : 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 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 : 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 : The optically inactive amino acid is (A) Glycine (B) Serine (C) Threonine (D) Valine

Last Answer : (A) Glycine

Description : Proteins contain (A) Only L-  - amino acids (B) Only D-amino acids (C) DL-Amino acids (D) Both (A) and (B)

Last Answer : (A) Only L-  - amino acids

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 : 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 : 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 : The carbohydrate of the blood group substances is (A) Sucrose (B) Fucose (C) Arabinose (D) Maltose

Last Answer : (B) Fucose

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 : 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

Last Answer : (A) Epimers

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 number of isomers of glucose is (A) 2 (B) 4 (C) 8 (D) 16

Last Answer : (D) 16

Description : Polysaccharides are (A) Polymers (B) Acids (C) Proteins (D) Oils

Last Answer : (A) Polymers

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

Last Answer : (A) Glycerose

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

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