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 D C A B E C B A D E D A E C B None 2. In 1938, Max Perutz a political refugee at Cambridge University published X-ray photograph crystal data for .......... and ........... proteins. Myoglobin and haemoglobin Pepsin and papain Haemoglobin and pepsin Immunoglobulin and haemoglobin None 3. Which one of the following is an example of an enzyme group called transferase 3-Phosphoglycerate kinase Alpha-amylase Fructose biphosphate aldolase Acetyl Co-A synthetase None 4. The way enzyme helps a substrate to be attacked by reagent effectively is : 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 enzyme hold the substrate in a suitable position so that it can be attacked by the reagent effectively none of these None 5. Which biomolecule is correctly characteristed? Alanine amino acid contains an amino acid and an acidic group anywhere in the molecule. Palmitic acid unsaturated fatty acid with 18 carbon atoms Lecithin phosphorylated glyceride found in cell membrane Adenylic acid adenosine with glucose phosphate molecule None 6. An enzyme which brings about change inside a group without altering the composition is Mutase Esterase Epimerase Isomerase None 7. In the study of enzymes, a sigmoidal plot of substrate concentration(S) versus the reaction velocity(V) indicates Non-Competitive inhibition Michaelis- Menten kinetics Cooperative binding Competitive inhibition None 8. 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 9. Reverse transcription was discovered by which of the following scientist? Khorana Temin and Baltimore Watson and Crick Meischer None 10. The term feedback refers to the effect of End product on the rate of enzymatic reaction Substrate on the rate of enzymatic reaction Enzyme concentration on its rate of reaction An external compound on the rate of enzymatic reaction None 11. Which of the following is a false statements Guanyl transferase enzyme helps in capping process during splicing of hn-RNA. RNA mutate at a faster rate, as compared to DNA. DNA is chemically less reactive, as compared to RNA. Sweetness index of saccharine is 10,000. 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 12 72 400 None 13. Formation of both peptide and glycosidic bonds involves Hydration Dehydration Esterification Acidification None 14. For RNA-interference, two scientists got Nobel prize in 2006. In which organism these scientists discovered this process? Hymenolepis nana Caenorhabditis elegans Paragonimus westermani Echinococcus granulosus None 15. Which of the following elements are present in all proteins?1. Carbon2. Hydrogen3. Oxygen4. NitrogenSelect the correct answer from the codes given below. 1, 3 and 4 2 and 3 1, 2, 3 and 4 1, 2 and 3 None 16. Enzymes functional in a cell are Inducible, constitutive and repressible Inducible only Repressible only Inducible and repressible None 17. 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? Malate dehydrogenase Succinate dehydrogenae Isocitrate dehydrogenase Lactate dehydrogenase None 18. 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 a, b, e b, c, d, e a, b, c None 19. The formation of phosphodiester bonds between two nucleotides can be considered as Anabolic None of the above Catabolic Anabolic and catabolic None 20. On plotting a graph between substrate concentration and time, a scientist found a sigmoid curve. The enzyme is Apoenzyme Isozyme Mono enzyme Allosteric 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.
