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
Description : All followings are ketogenic aminoacids except (A) Leucine (B) Isoleucine (C) Phenyl alanine (D) Glycine
Last Answer : Answer : D
Description : Cerebonic acid is present in (A) Triglycerides (B) Cerebrosides (C) Esterified cholestrol (D) Sphingomyelin
Last Answer : Answer : B
Description : The major storage form of lipids is (A) Esterified cholesterol (B) Glycerophospholipids (C) Triglycerides (D) Sphingolipids
Description : A compound gives a positive Tollens' test but negative Ninhydrin test. It is (a) a protein (b) an amino acid (c) a monosaccharide (d) pyridine
Last Answer : a monosaccharide
Description : The major constituents in agar are a. Fats b. Aminoacids c. Polysaccharides d. Polypeptides
Last Answer : Ans: C
Description : What is the test for reducing sugars in urine?
Last Answer : Benedictís test.
Description : Which compound gives both ninhydrin test and Molisch’s test? -Do You Know?
Last Answer : answer:
Description : Which compound gives both ninhydrin test and Molisch's test?
Last Answer : protein
Description : Ninhydrin reaction gives a purple colour and evolves CO2 with (A) Peptide bonds (B) Histamine (C) Ergothioneine (D) Aspargine
Description : The amino acid which gives yellow colour with Ninhydrin in paper chromatography is (A) Tyrosine (B) Proline (C) Tryptophan (D) Alanine
Description : Glycerol released from adipose tissue by hydrolysis of triglycerides is mainly (A) Taken up by liver (B) Taken up by extrahepatic tissues (C) Reutilised in adipose tissue (D) Excreted from the body FATS AND FATTY ACID METABOLISM 85
Last Answer : Answer : A
Description : How alpha and beta forms of sugars are produced?
Last Answer : These are anomers. The difference lies in the spatial configuration with reference to the first carbon atom in aldoses and second carbon atom in ketoses.
Description : Glucose and fructose are reducing sugars, but sucrose (containing glucose and fructose) is a non-reducing sugar, why?
Last Answer : Because the glycosidic linkage in sucrose involves 1st carbon of glucose and 2nd carbon of fructose, so both reducing groups are masked.
Description : Name a few reducing sugars.
Last Answer : Glucose, fructose, mannose.
Description : Optical isomers of all aminoacids exist except (A) Glycine (B) Arginine (C) Alanine (D) Hydroxy proline
Description : Abnormal chain of aminoacids in sickle cell anemia is (A) β-chain (B) β-chain (C) γ-chain (D) r-chain
Description : Increased serum alanine during fasting is due to (A) Breakdown of muscle proteins (B) Decreased utilization of non essential amino acids (C) Leakage of aminoacids to plasma (D) Impaired renal function
Description : Consider the following statements: 1. Mercury metal exists as a liquid at room temperature. 2. The property of metals by which they can be beaten into thin sheets is called malleability 3. Neutral fats such as butter and vegetable oils ... b) 1, 3 and 4 only (c) 2, 3 and 4 only (d) 1, 2 and 3 only
Last Answer : Ans:(d)
Description : Which one of the following is the correct matching of the site of action on the given substrate, the enzyme acting upon it and the end product? (a) Small intestine : Proteins Pepsin → ... Trypsin → Monoglycerides (d) Small intestine : Starch α-Amylase → Disaccharide (maltose)
Last Answer : (d) Small intestine : Starch α-Amylase → Disaccharide
Description : Do fats and water soluble molecules such as sugars get absorbed from the intestine directly into the blood?
Last Answer : The simple sugars do but not the fats. The presence of fat inthe small intestine produces hormones that stimulate the release ofpancreatic lipase from the pancreas and bile from the liver whichhelps in the emulsification of fats for absorption as fattyacids.
Description : How do our bodies respond to fats and sugars?
Last Answer : What is the answer ?
Description : 34. Decomposition rate is slower if detritus is ... b) Rich in Nitrogen b) Rich in lignin and chitin c) Rich in sugars d) Rich in fats and lipids
Last Answer : b) Rich in lignin and chitin
Description : 14. Decomposition rate is slower if detritus is ... a) Rich in Nitrogen b) Rich in lignin and chitin c) Rich in sugars d) Rich in fats and lipids
Description : The nucleophilic attack on the esterified carboxyl group of the peptidyl-tRNA occupying the P site and the α-amino group of the new amino acyl tRNA, the number of ATP required by the amino acid on the charged tRNA is (A) Zero (B) One (C) Two (D) Four
Description : The α-amino group of the new amino acyl tRNA in the A site carries out a nucleophilic attack on the esterified carboxyl group of the peptidyl tRNA occupying the P site. This reaction is catalysed by (A) DNA polymerase (B) RNA polymerase (C) Peptidyl transferase (D) DNA ligase
Description : The enzyme amino acyl tRNA synthetase is involved in (A) Dissociation of discharged tRNA from 80S ribosome (B) Charging of tRNA with specific amino acids (C) Termination of protein synthesis (D) Nucleophilic attack on esterified carboxyl group of peptidyl tRNA
Description : In adrenal gland the cholesterol is stored (A) Mostly in the free form (B) Mostly in esterified form (C) Large amount of free form and less amount of esterified form (D) Equal amounts of free and esterified form
Description : All of the following statements about multiple sclerosis are true except (A) There is loss of phospholipids from white matter (B) There is loss of sphingolipids from white matter (C) There is loss of esterified cholesterol from white matter (D) White matter resembles gray matter in composition
Description : If the fatty acid is esterified with an alcohol of high molecular weight instead of glycerol, the resulting compound is (A) Lipositol (B) Plasmalogen (C) Wax (D) Cephalin
Description : In diabetes mellitus, non-esterified fatty acid level in blood is increased, why?
Last Answer : Insulin inhibits hormone sensitive lipase, in diabetes, this inhibition is removed, so, more lipolysis is taking place.
Description : Reducing type sugars are
Last Answer : Ans. Maltose and Cellobiose
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
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
Description : Ninhydrin test is given by (a) Carbohydrates (b) Proteins (c) Alkanes (d) Alkenes
Last Answer : Proteins
Description : The useful reagent for detection of amino acids is (A) Molisch reagent (B) Dichlorophenol Indophenol (C) Ninhydrin (D) Biuret
Description : Sanger’s reagent contains (A) Phenylisothiocyanate (B) Dansyl chloride (C) 1-Fluoro-2, 4-dinitrobenzene (D) Ninhydrin
Description : Primary structure of proteins can be determined by the use of (A) Electrophoresis (B) Chromatography (C) Ninhydrin (D) Sanger’s reagent
Description : Ninhydrin with evolution of CO2 forms a blue complex with (A) Peptide bond (B) α-Amino acids (C) Serotonin (D) Histamine
Description : Do proteins give a color with ninhydrin?
Last Answer : Proteins do not give a true color reaction; but N- terminal end amino group of protein will react with ninhydrin, to produce a blue color.
Description : What is the importance of ninhydrin reaction?
Last Answer : It is used for qualitative test and quantitative es- timation of amino acids. It is often used for detec- tion of amino acids in chromatography.
Description : What is ninhydrin reaction?
Last Answer : All amino acids when heated with ninhydrin will give a pink colour.
Description : What is the color of a positive test for fats?
Last Answer : Need answer
Description : 13.How many effective codons are there for the synthesis of twenty aminoacids (a)64 (b)32 (c)60 (d)61
Last Answer : ANS.(D) 61
Description : Guanidine group of argentine gives positive test with (A) Lead acetate (B) Sakaguchi reagent (C) Tricholoroacetic acid (D) Molisch’s reagent
Description : A phosphoglyceride is always made up of (a) a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached (b) a saturated or unsaturated ... unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached.
Last Answer : (a) a saturated or unsaturated fatty acid esterified to a glycerol molecule to which a phosphate group is also attached
Description : A column of water within xylem vessels of tall trees does not break under its weight because of (a) lignification of xylem vessels (b) positive root pressure (c) dissolved sugars in water (d) tensile strength of water.
Last Answer : (d) tensile strength of water.
Description : What are the Reaction of amino acid using ninhydrin and biuret reagent?
Description : Which of the followings could be an immunodiagnostic test? B A. PCR B. ELISA C. Liver function test D. Biopsy
Last Answer : ELISA
Description : Which of the followings could be an immunodiagnostic test? B A. PCR B. ELISA C. Liver function test D. Biops