Class 11-Biology-chapter 9-Biomolecules InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Arrange the following compounds in descending order on the basis of number of carbon atoms present in them.(A) Palmitic acid (B) Serine (C) Ribose (D) Arachidoric acid (E) Glucose B C E A D C B A D E D C A B E D A E C B None 2. All enzymes of TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in cytosol in prokaryotes. This enzyme is? Succinate dehydrogenae Malate dehydrogenase Isocitrate dehydrogenase Lactate dehydrogenase None 3. Which one of the following is an example of an enzyme group called transferase Fructose biphosphate aldolase Alpha-amylase 3-Phosphoglycerate kinase Acetyl Co-A synthetase None 4. In the study of enzymes, a sigmoidal plot of substrate concentration(S) versus the reaction velocity(V) indicates Competitive inhibition Cooperative binding Non-Competitive inhibition Michaelis- Menten kinetics None 5. Enzymes functional in a cell are Inducible and repressible Inducible, constitutive and repressible Repressible only Inducible only None 6. Which of the following elements are present in all proteins?1. Carbon2. Hydrogen3. Oxygen4. NitrogenSelect the correct answer from the codes given below. 2 and 3 1, 2, 3 and 4 1, 3 and 4 1, 2 and 3 None 7. Which biomolecule is correctly characteristed? Lecithin phosphorylated glyceride found in cell membrane Adenylic acid adenosine with glucose phosphate molecule Palmitic acid unsaturated fatty acid with 18 carbon atoms Alanine amino acid contains an amino acid and an acidic group anywhere in the molecule. None 8. On plotting a graph between substrate concentration and time, a scientist found a sigmoid curve. The enzyme is Mono enzyme Allosteric Apoenzyme Isozyme None 9. For RNA-interference, two scientists got Nobel prize in 2006. In which organism these scientists discovered this process? Paragonimus westermani Caenorhabditis elegans Hymenolepis nana Echinococcus granulosus None 10. Reverse transcription was discovered by which of the following scientist? Watson and Crick Khorana Temin and Baltimore Meischer None 11. The way enzyme helps a substrate to be attacked by reagent effectively is : enzyme hold the substrate in a suitable position so that it can be attacked by the reagent effectively none of these enzyme hold the reagent in a suitable position so that it can be attacked by the substrate effectively enzyme react with substrate chemically to convert it into the more reactive form None 12. A test tube contains 4000 substrate moles along with its corresponding enzyme whose TON is 20. After 10 minutes if 40% of the substrate is left in the test tube, then how many enzyme molecules are involved in the reaction? 24 72 400 12 None 13. The term feedback refers to the effect of An external compound on the rate of enzymatic reaction Substrate on the rate of enzymatic reaction Enzyme concentration on its rate of reaction End product on the rate of enzymatic reaction None 14. In 1938, Max Perutz a political refugee at Cambridge University published X-ray photograph crystal data for .......... and ........... proteins. Haemoglobin and pepsin Myoglobin and haemoglobin Pepsin and papain Immunoglobulin and haemoglobin None 15. Which of the following statements are true?(a) Proteins are the heteropolymer of 𝛼α-amino acid.(b) Sugar found in nucleic acid, is in the form of 𝛽β-form.(c) Nucleic acids show acidic nature.(d) 5-methyl uracil binds with the first carbon atom of the ribose sugar.(e) Collagen is the most abundant protein in the plant world. a, b, d b, c, d, e a, b, c a, b, e None 16. The formation of phosphodiester bonds between two nucleotides can be considered as Catabolic Anabolic None of the above Anabolic and catabolic None 17. An enzyme which brings about change inside a group without altering the composition is Epimerase Mutase Isomerase Esterase None 18. When hydrogen peroxide is applied on the wound as a disinfectant, there is frothing at the site of injury. which is due to the presence of an enzyme in the skin that uses hydrogen peroxide as a substrate to produce. Water Hydrogen Oxygen Carbon Dioxide None 19. Formation of both peptide and glycosidic bonds involves Esterification Hydration Acidification Dehydration None 20. Which of the following is a false statements Guanyl transferase enzyme helps in capping process during splicing of hn-RNA. Sweetness index of saccharine is 10,000. DNA is chemically less reactive, as compared to RNA. RNA mutate at a faster rate, as compared to DNA. None Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Leave a Reply Cancel replyCommentEnter your name or username to commentEnter your email address to commentEnter your website URL (optional) Save my name, email, and website in this browser for the next time I comment.