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- Using this chemical equation: 3Na+AlCl3->3NaCl+Al If 16 g Na and 8 g AlCl3 are allowed to react, find a. the limiting reactant b. the excess reactant c. the grams of Al are formed in the chemical reaction.In enzyme and chemical kinetics A -->P, what is the instantaneous appearance or disappearance of A called?: * 1) Velocity v = -d[A]/dt 2) Km. 3) Velocity v = d[P]/dt 4) 1&3 Can be correct. 5) Velocity v = d[E]/dtInvertase works on a _________ molecule, specfically ___________ and it does a _________ reaction since it uses water to create a aldose ________ and a ketose _______ . The Beano type we used did not contain invertase, but only alpha-galactosidase; therefore it would only produce the monomer aldose _________ . Contrary, Beano on the go would produce all three major 6 carbon _______ monomers.
- Which statements are true and which are false? Modify each false statement so that it reads correctly. a. In a closed system, neither energy nor matter is exchanged with the surroundings. b. State functions are independent of the pathway. c. A process is isothermic if ΔH = 0. d. The sign and magnitude of ΔG give important information about the direction and rate of a reaction. e. At equilibrium, ΔG = ΔG°. f. For two reactions to be coupled, they must have a common intermediate.1 Draw a general sketch ( backbone only ) of a protein alpha- helix and a beta shet. 2 why do heat and acid denature protein 3 what rae the forces tha drive the formation of secondary and tertiary protein structure. Using your amino acid table, draw two of th epossible interactions. 4 what are enzyme and how they work? Discuss one example of how enzyme catalyze reactions. Also, provide an example of inhibition NOTE- PLEASE DO NOT EXPLAIN TOO MUCH EXPLAIN TO THE POINT EXPLAIN IN SHORT GIVE ANSWER TO THE STRAIGHT POINT.1)Catalase a. Is catalase activity endothermic or exothermic? b. What classification of enzyme is catalase? c. Give the Enzyme Commission (E.C.) number of catalase. d. Is catalase reusable? answer all and don't copy from other sources I will downvote for sure
- 26. AN ORGANIC COFACTOR IN A CONJUGATED ENZYME?A. NEITHER VITAMINS NOR MINERALSB. MINERALS C. VITAMINSD. BOTH VITAMINS AND MINERALS 27. WHICH OF THE FOLLOWING STATEMENTS CONCERNING COFACTORS IS INCORRECT?A. VITAMINS CANNOT BE COFACTORSB. SOME COFACTORS ARE METAL IONS C. COFACTOR IS THE NON-PROTEIN PORTION OF ENZYME D. CONJUGATED ENZYMES CONTAIN COFACTORS 28. WHICH OF THE FOLLOWING VITAMINS IS NOT A FAT SOLUBLE VITAMIN? A. VITAMIN E B. VITAMIN C C. VITAMIN A D. VITAMIN D 29. WHAT HAPPENS TO SUBSTRATE MOLECULES AT AN ENZYME ACTIVE SITE?A. ALWAYS REACT WITH OXYGEN B. UNDERGO CHANGE TO A DESIRED PRODUCTS C. BECOME CATALYST C ALWAYS REACT WITH OXYGEN B UNDERGO CHANGE TO A DESIRED PRODUCT D. BECOME COVALENTLY BONDED TO THE ENZYME D. BECOME COVALENTLY BONDED TO THE ENZYME 30. ACTION OF CHEMICAL WARFARE AND ORGANOPHOSPHATE INSECTICIDE ARE BASED ON?A. REVERSIBLE ENZYME INHIBITOR B. IRREVERSIBLE ENZYME INHIBITOR C. REVERSIBLE ENZYME ACTIVATOR D. IRREVERSIBLE ENZYME ACTIVATORThe hydrolysis of ATP has a large negative ΔG'°; nevertheless it is stable in solution due to: a. entropy stabilization. b. ionization of the phosphates. c. resonance stabilization. d. the hydrolysis reaction being endergonic. e. the hydrolysis reaction having a large activation energy.when preparing a buffer solution for a biological experiment, one should choose a) a weak acid and its conjugate base that are not enzyme inhibitors b) a weak acid and its conjugate base that do not react with one another to form new products c) a weak acid whose pKa is near the required pH d) a weak acid and its conjugate base that are neither toxic nor oxidizing/reducing agents e) all of these choices
- Although the first two carbons of fructose and glucose are identical in structure to DHAP and GADP (from glycolysis), DHAP and GADP equilibriate on their in solution to favor the ketone over the aldehyde, while fructose and glucose do not. Why? a)The larger size of the molecule sterically hinders the isomerization b)The larger sugars have more OH groups which hydrogen bond and disrupt isomerization c)The larger sugars cyclize, and there is no carbonyl to isomerize in the cyclic form d)The larger sugars cyclize, and in the cyclic form the hydrogen bonding is very strong e)The larger sugars are less soluble in water than the smaller sugarsBiochemists use a modified value for standard ΔG values because A. the reagents are not one molar and the pH = 7. B. the concentration of water is not at 1 molar concentration. C. all reagents are not at a 1 molar concentration. D. the pH in living systems is seldom, if ever, near 0.E. All of these justify why biochemists use a special ΔG value Which of the following is likely to be correct if protein phosphatase 1 (PP1), which removes thephosphoryl groups from the enzymes, is completely inhibited? -PFK-2 becomes more active -Glycogen synthase kinase 3 becomes more active -Both A and B -Neither A nor BThe amln0 acid histldine ls usually found in actlve sltes 0f enzymes. What structural feature does the R group of hlstidine have that may be important for the activity of enzymes? Explain