Please fill in the information below. NAME EMAIL PHONE NUMBER 1. Inhibitors are Use the active site Chemical that interfere with enzyme activity Fight for position Look like the substrate2. 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)3. Enzyme increases the rate of reaction by lowering the activation energy. False True4. What is the function of phosphorylase? Transfer a carboxylate group Use H2O2 as the electron acceptor Transfer amino group Transfer inorganic phosphate5. Which of the following is false about feedback regulation? Concentration of enzyme is reduced by the end product It is a type of enzymatic activity regulation The synthesis of concerned enzyme is inhibited by interfering with the gene of that enzyme The best example is the biosynthesis of L-isoleucine from L-threonine in bacteria6. What is an apoenzyme? It is a protein portion of an enzyme It is a prosthetic group It is a non-protein group It is a complete, biologically active conjugated enzyme7. Which of the following is NOT an enzyme? Pepsin Sucrose Catalase Amylase8. Removal of phosphoryl groups is catalyzed by ______ Dinitrogenase reductase Protein phosphatases Protein kinases Diphteria toxin and cholera toxin9. Which of this vitamin is associated with the coenzyme Biocytin? Nicotinic acid Pyridoxine Biotin Thiamine10. A __________is a biocatalyst that increases the rate of the reaction without being changed. Aluminum oxide Silicon dioxide Hydrogen peroxide Enzyme11. Excess final products in a series of chemical reaction causes _________ inhibition.(leave answer in lowercase)12. Which of the following takes place due to phosphorylation of isocitrate dehydrogenase? Inhibits the binding of citrate at active site Enhances the substrate-binding affinity No reaction Degrades the enzyme13. Which of the following is the CORRECT function of enzyme, Peptidase? Cleave phosphodiester bond Removal of H2O Remove phosphate from a substrate Cleave amino bonds14. Which of the following is NOT true about enzymes? Enzymes lower the activation energy Enzymes catalyzes chemical reactions Enzymes are proteins Enzymes react with the substrate in a chemical reaction.15. What is the nature of an enzyme? Lipid Protein Carbohydrate Vitamin16. Forming and breaking bonds requires ________ depending upon what kind of a reaction you have. protein energy fusion fuel17. Which graph shows the effect of pH on enzyme activity? Graph C Graph A Graph D Graph B18. How many types of enzymatic regulation mechanism occurs in the cells? 2 3 4 519. Competitive Inhibitor Has the same molecular shape of substrate Triggers enzyme to quit producing insulin All of the above Looks like substrate20. The attachment of phosphoryl groups to specific amino acid residues is catalyzed by ______ Protein kinases Dinitrogenase reductase Diphteria toxin and cholera toxin Protein phosphatases21. Which of the following enzyme catalyzes a reaction that introduces reduced nitrogen to cellular metabolism? Phosphatase Bacterial glutamine synthase Bacterial dinitrogenase reductase Bacterial dinitrogenase oxidase22. Which of the following reaction is catalyzed by Lyase? Breaking of bonds Formation of bonds Transfer of group from one molecule to another Intramolecular rearrangement of bonds23. The following are correct about enzyme inhibitors except? Noncompetitive inhibitors bind to the allosteric site of an enzyme Competitive inhibitors bind to the active site of an enzyme. Noncompetitive inhibitors bind to the active site of an enzyme. All of the above24. Co factors are Trigger enzyme to quit producing insulin Interfere with protein bonds Organic co factors Non protein substances that help to facilitate enzymes25. Which of the following is an example of ligases enzyme? Mutases Carboxylases Epimerases Racemases26 out of 25Time is Up!
