Biology Enzymes Mcqs Online Preparation Biology Enzymes Mcqs Online Preparation With Answers Start Below 123456789101112131415Show paginator Hide paginator 7% Question 1 of 15 1. Without enzymes reactions would proceed at:A. Very slow speedB. Very high speedC. Moderate speedD. No reaction take placeQuestion 1 of 15 Loading... Question 2 of 15 2. According to _________ active site is a rigid structureA. Both a and bB. Fluid musaie modelC. Induce fit modelD. Lock & key modelQuestion 2 of 15 Loading... Question 3 of 15 3. Enzyme succinic dehydrogenase coverts substrate succinic acid into productA. Malonic AcidB. Succinate ionC. Fumaric acidD. Fumarate ionQuestion 3 of 15 Loading... Question 4 of 15 4. The most important group of proteins which are biological activeA. HormonesB. EnzymesC. AntibodiesD. All a, b and cQuestion 4 of 15 Loading... Question 5 of 15 5. The substrate or reactant is attached to the active site consisting of:A. Hundred of amino acidsB. No of poly peptde chainsC. Few amino acidsD. Many ATP moleculesQuestion 5 of 15 Loading... Question 6 of 15 6. Because of structural similarity with the substrate competitive inhibitors may be selected by theA. Active sitesB. Catalytic sitesC. Binding sitesD. All of theseQuestion 6 of 15 Loading... Question 7 of 15 7. The reaction rate is directly proportion to the subtract available atA. Both a & cB. High substrate concentrationC. Low concentration substrate availableD. Low enzyme concentrationQuestion 7 of 15 Loading... Question 8 of 15 8. The detachable co-factor is known as __________ it if is an inorganic ionA. ActivatorB. Positive groupC. Co-factorD. Co-enzymeQuestion 8 of 15 Loading... Question 9 of 15 9. The apoenzyme and the cofactor together constitute the whole or complete enzyme termed as:A. BiotinB. NADC. HoloenzymesD. RibozymesQuestion 9 of 15 Loading... Question 10 of 15 10. Optimum pH of salivary amylase is:A. 4.50B. 6.80C. 9.70D. 9.00Question 10 of 15 Loading... Question 11 of 15 11. The enzymes important in photosynthesis are found in theA. RibosomesB. MitochondriaC. ChloroplastD. Golgi bodiesQuestion 11 of 15 Loading... Question 12 of 15 12. Which is correct about co-factor?A. Non proteins partB. All a, b and cC. Essential for normal functioningD. Act as bridgeQuestion 12 of 15 Loading... Question 13 of 15 13. Enzyme succinic dehydrogenase converts substrate succinic acid into productA. Fumarate ionB. Fumaric acidC. Succinate ionD. Malonic AcidQuestion 13 of 15 Loading... Question 14 of 15 14. Malonic acid is ________ inhibitor of succinic dehydrogenaseA. Non-competitiveB. ReversibleC. IrreversibleD. CompetitiveQuestion 14 of 15 Loading... Question 15 of 15 15. The most important group of proteins which are biological activeA. EnzymesB. AntibodiesC. All a, b and cD. HormonesQuestion 15 of 15 Loading... Loading... Related Study Posts:MDCAT Test Biology Test Online PreparationAptitude Preparation Mcqs OnlineASF Written Test Preparation Online McqsFPSC SST Test Preparation Mcqs OnlineOnline ECAT Test Preparation McqsPPSC Lecturer Test Preparation Online McqsLecturer Test KPPSC Preparation Mcqs OnlineSPSC SST Test Preparation Mcqs Online with SyllabusFPSC Test Preparation Mcqs Online Subject WiseIB Pakistan NTS Jobs 2025 Online Test Preparation Mcqs