10/05/2020Enzymes(Senior Class Biology Study by Topics) 0Comments by Gate Academy Please fill in the information below. NAME EMAIL PHONE NUMBER 1. Which of the following function is catalyzed by Racemases?Interconversion of L and D stereoisomersIntramolecular transfer of a functional groupRemoval of waterInversion of asymmetric carbon atom2. Name the coenzyme of riboflavin (B2)?Coenzyme AThiamine pyrophosphateFAD and FMNNAD or NADP3. What is the function of phosphorylase?Transfer a carboxylate groupTransfer amino groupTransfer inorganic phosphateUse H2O2 as the electron acceptor4. Which line in the graph shows the presence of an enzyme in a chemical reaction?Line 2Line 15. Which of the following is the CORRECT function of enzyme, Peptidase?Removal of H2OCleave amino bondsCleave phosphodiester bondRemove phosphate from a substrate6. What is an apoenzyme?It is a protein portion of an enzymeIt is a non-protein groupIt is a complete, biologically active conjugated enzymeIt is a prosthetic group7. Which of the following enzyme catalyzes a reaction that introduces reduced nitrogen to cellular metabolism?Bacterial dinitrogenase reductasePhosphataseBacterial dinitrogenase oxidaseBacterial glutamine synthase8. Which of the following is true about enzymes?All of the above.Enzymes only work when conditions are prefect for them.When the shape of the enzyme is lost – this is called DENATURING.They are all dependent on certain factors like Temperature and pH.9. ___________ inhibitors change the shape of an enzyme.NoncompetitiveCompetititveDistributiveNondistributive10. Excess final products in a series of chemical reaction causes _________ inhibition.(leave answer in lowercase)11. The allosteric inhibitor of an enzyme ______Causes the enzyme to work fasterBinds to the active siteParticipates in feedback regulationDenatures the enzyme12. Cellulose is a tough component of plant fiber. Animals such as cows, horses and goats are able to digest cellulose because of their enzyme called ___________(leave answer in lowercase)13. Which of the following reaction is catalyzed by Lyase?Intramolecular rearrangement of bondsFormation of bondsTransfer of group from one molecule to anotherBreaking of bonds14. Which of the following is an example of ligases enzyme?CarboxylasesRacemasesEpimerasesMutases15. Which of the following enzyme is responsible for the regulation of biological nitrogen fixation?Dinitrogenase reductaseDinitrogenase oxidaseKinasePhosphatase16. Out of the four things listed what will most likely not affect an enzymeH20TemperaturePHSalt17. Which of the following enzyme is responsible for the regulation of biological nitrogen fixation?Dinitrogenase reductasePhosphataseDinitrogenase oxidaseKinase18. Active site is?Where there is a shape change that occurs when bondingBalance of living organism can affect the enzymeWhere the reactant fits into the enzymeWhere the enzyme and molecule bond together19. What is the binding energy?It is the activation energyThe energy required to form a bondThe energy required to bind substrateFree energy released in the formation of enzyme-substrate interaction20. Name the enzyme which catalyzes the oxidation-reduction reaction?OxidoreductasePhosphofructokinaseGlutamine synthetaseTransaminase21. Inhibitors areLook like the substrateFight for positionUse the active siteChemical that interfere with enzyme activity22. Which graph shows the effect of pH on enzyme activity? Graph CGraph DGraph AGraph B23. Co factors areTrigger enzyme to quit producing insulinOrganic co factorsNon protein substances that help to facilitate enzymesInterfere with protein bonds24. The following are correct about enzyme inhibitors except?Noncompetitive inhibitors bind to the active site of an enzyme.Noncompetitive inhibitors bind to the allosteric site of an enzymeAll of the aboveCompetitive inhibitors bind to the active site of an enzyme.25. Enzyme increases the rate of reaction by lowering the activation energy.TrueFalse26 out of 25Time is Up!
