Posted on : March 6, 2020 By Team thecourseshub 1. A single polupeptide chain may reach maximally upto which level Primary Secondary Tertiary Quaternary2. The specificity of enzyme is due to Their high molecular weight Their pH sensitivity Their hydrogen bonding Their surface configuration3. Presence of which type of bond shows more complexity among carbohydrates 1-2 glycosidic linkage 1-6 glycosidic linkage 1-4 glycosidic linkage 1-3 glycosidic linkage4. All of the following yield glucose on hydrolysis except Strach Glycogen Cellulose Chitin5. These are highly hydrophobic compounds Acylglycerols Phospholipids Waxes Prostaglandins6. Strach is Monomer & micromolecule Monomer & macromolecule Polymer & micromolecule Polymer & macromolecule7. The rate of reaction will always be directly proportional to the concentration of enzyme, if Substrate concentration is limited Substrate concentration is constant Substrate concentration is decreased Substrate concentration is unlimited8. All of the following enzymes are secreted in inactive form except Pepsin Chymotrypsin Trypsin Catalase9. Template model of enzyme action is Induced Fit Model Lock and Key Model Dispersive Model Semiconsercative Model10. They form enzyme inhibitor complex at a point other than binding site Competitive inhibitors Reversible inhibitors Non-Competitive inhibitors Irreversible inhibitors11. Amount of DNA in a cell depends upon Number of chromosomes Types of chromosomes Alignment of chromosomes Karyotype of chromosomes12. How many water molecules are consumed during the formation of one lecithin molecule? 0 2 3 413. Which substance contains carbon, hydrogen, oxygen, and nitrogen? Collagen Glycogen Amylopectin Triglyceride14. Number of amino acids in 5 turns of ∝-helix 3.6 6 18 3615. Which of the following organic molecule binds covalently with the protein part of enzyme? Prosthetic group Coenzyme Activator Cofactor16. Breakage of which bond may convert an alpha helix of protein into a straight polypeptide chain H-bonding Ionic bonding Hydrophobic interactions Disulphide link17. Which of the following does not contain carbohydrates Pectin Dextrin Cutin Chitin18. Number of ester bonds in a trinucleotide 1 2 3 519. All of the following essentially consist of protein except Antibody Enzyme Antigen Spindle fiber20. Nitrogenous bases are linked to deoxyribose sugar in DNA through C-C Link C=O Link N-N Link C-N Link21. Most of the enzymes are Present in cytoplasm Present in nucleus Attached to membrane system of cell Attached to endoplasmic reticulum22. The possible enzyme used to digest the substance produced by combination of glycine and alcanine Enterokinase Amylopsin Erypsin Trypsin23. On hydrolysis nucleoside will not yield Purine Pentose sugar Pyrimidine Phosphoric acid24. Myelin sheath of a neuron is composed mainly of Acylglycerols Sphingolipids Waxes Terpenoids25. Which one will be at tertiary structural level? Hacmoglobin Fibrin Myoglobin Keratin26. The solubility of fatty acids in water Increases with increasing "C" number Decreases with increasing "C" number Does not change with "C" number Fatty acids are insoluble in water27. According to induce fit model substrate induces a change in Enzyme function Enzyme activity Enzyme structure Enzyme composition28. Which of the following is a protine? Rubisco RuBP Cutin Glycylalanine29. An enzyme will remain non-functional until it attains Primary structure Secondary structure Tertiary structure Quaternary structure30. Number of double bond/s in R group oleic acid 1 2 3 631. Enzymes of anaerobic respiration are found in Nucleus Cytoplasm Mitochondria Ribosomes32. Which term describes the type of bonding responsible for stabilizing the secondary structure of a protein? Disulphide Hydrogen Hydrophobic Ionic33. Which of the following is true about sickle cell hemoglobin? Only one beta chain is affected both beta chains are affected Only one alpha chain is affected both alpha chains are affected34. Which of the following does not form a biopolymer? Fatty acids Amino acids Nucleotides Monosaccharides35. Which one of the following usually does not act as an inhibitor? ATP Substrate Product Cyanide36. Presence of malonic acid may be block which step of Krebs cycle? Oxaloacetate to fumarate Succinate to fumarate Fumarate to malate ∝-ketoglutarate to succinate37. The fatty acids least likely to be found in waxes Palmitic acids Oleic acid Acetic acid Stearic acid38. Optimum pH value for pancreatic lipase 7.6 8 9 8-939. Formation of trisaceharide involces release of_________ water molecule 2 3 1 440. The general formula of fatty acids is HOOC-R, the number of carbons in R group of fatty acids is always 25-35 2-30 1-29 Unlimited41. Which of the following may act as a coenzyme? Dipeptide Disulphide Dinucleotide Disaccharide42. A triglyceride molecule has Three fatty acids with two glycerol molecule Three fatty acids with one glycerol molecule Two fatty acids with two glycerol molecule One fatty acids with one glycerol molecule43. Maximum number of 1-6 glycosidic linkages are found in Amylose Amylopectin Glycogen Cellulose44. Which of the following is a high energy bond in the ATP molecule? Phosphate-Phosphate Carbon-Oxygen Carbon-Phosphate Hydrogen-Hydroxyl45. Which one is not a nitrogenous base? Adenine Lecithin Ethanolamine Choline46. ES complex is converted into product by Allosteric site Active site Catalytic site Binding site47. General formula for monosaccharides can best be expressed as Cx(H2O)y Cn(H2O)n (CH2O)n C(H2O)n-148. Amount of DNA in kidney cells of chicken 1.3 pg 1.6 pg 3.3 pg 2.4 pg49. In plants carbohydrates are trandported in ________ form Sucrose Maltose Lactose Glucose50. Identify the group of smallest units as compared to others DNA, Amylose, Enzymes Hb, Insulin, ATP NAD, Strach, Rubisco AMP, Glycylalanine, Phosphatidylcholine51. All of the following statements are true about the active site except Charge bearing site Consists of few amino acids Always rigid Can bind with inhibitor52. Nutritional polysaccharides are Starch and glycogen Starch and Cellulose Starch and glucose Glycogen and chitin53. Which of the following statement is wrong about proteins? Regulate metabolic processes Movement of chromosomes Can easily across cell membrane Define body against pathogens54 out of 4 Time is Up!