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- WHich arrow represents the ΔG for the catalyzed reaction and which arrow represnts the activation energry for uncatalyzed reactionA thermodynamically spontaneous reaction O A. happens quickly, with no addition of energy to the system O"happens quickly whether or not there is an addition of energy to the system В. has the capacity to happen but might not happen quickly has the capacity to happen but only in the presence of a catalystWhich of the followingdescribe superior properties of enzymes (biological catalysts) over traditional chemical catalysts? a. They are mostly and generally operative under mild temperature, pressure, and pH conditions b. They are regulated only by substrate concentration c. They do not effect the reaction equilibrium, but lower the reaction's activation energy d. They are recycled at the end of the reaction Choose all that apply
- film araund of a Gas A pusses thirough acatalyst. the thickness of film is f . Mole fraction of A in the bulk of gas is yAo- A the Film, No reaetion takes place. but when A Contucts with catalyst the fast reaction nA >An fakes place . An comes back to the bulk of fluid. Calculate NA of the Rilm bulk Catalys tpse A red blood cell is placed in a solution that is .85% solute. O a It depends upon the temperature b. Salt will leave the cell c. The cell crenates Od. There is no net change in the cell e The cell lyses QUESTION 4 If a reaction has a Delta G of -61: a. The reaction is non-spontaneous b The reaction is energy requiring Oc The reaction is spontaneous C. Od The reaction is exergonic Ge The reaction is endergonicUncouplers of oxidative phosphorylation are all expect: Select one: O a. thermogenin O b. dinitrocresol O c. antimycin A O d. 2,4 dinitrophenol
- Viruses are not considered to be alive but are still considered cells. True O FalseA biochemist wants to determine the effect of inhibitor A to enzyme B which catlyzes the conversion of C to D. The effect of A to the rate of formation of D is shown below: 1. The Km (report to the nearest whole number) for the enzyme-catalyzed reaction in the absence of inhibitor A is _____ mM. 2. The Km for the enzyme catalyzed reaction in the presence of inhibitor A is ____mM. 3. The Vmax for the enzyme catalyzed reaction in the absence of inhibitor A is ____ mM/min 4. The Vmax for the enzyme catalyzed reaction in the presence of inhibitor A is ____mM/min 5. Inhibitor A is a/an ________ inhibitor of enzyme B1. Bzyines play an important role in biochemical reactions. Consider the following statements relating to enzyme-catalysed reactions 1. The shapes of the substrate and the active site of the enzyme are complementary 1. when enzymes are denatured, the shane and structure of the active sites are not altered HI. The substrate forms bonds with the active site of the enzyme Of these statements A. only I is true B. only III is true only I and Ilf are true all statements are true 2. Entropy of the system represents: A. The number and kind of bonds B. The absolute temperature of the reaction Randomness or disorder or the components of a chemical system D. The free energy change of the reaction E. All of the above 3. What is removed from pyruvate during its conversion into an acetyl group? A. Oxygen qB. ATP C. FAD* carbon dioxide 4 Cofactors A. increase activation energy B. help facilitate enzyme activity С. are very rare in living organisms X D break hydrogen bonds in proteins E. are linked to…
- Time lef a particulate matter of O.003 mm, if inhaled, it will settle in O a. the blood Ob. deep in the lung in the body fat O d. inthe nose O e in the trachea and the bronchi (air ways) one of the following molecules absorbs UVA O a. NO3 O b. NO HNO3 Od. NO2 e. N205 Rhodium catalyst in the catalytic converter will be able to reduceWhat are the description of the ff?A. Effect of pH with enzymaticactivity. Include example ofenzymes optimum pH.B. Effect of activators on theactivity of enzymes. Includeexamples.When an enzyme catalyzes a reaction: onisido stunim q a. Substrate(s) bind in the active site The b. Products bind in the active site eri c. The shape of the enzyme remains unchanged l f d. The enzyme is consumed by the reaction