In order for the reaction rate to rise the activation energy should be Select one: O a. decreased O b. increased O O c. decreased or increased d. not changed Riboflavin gives rise to cofactors:
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- Consider the following free energy diagram for an uncatalyzed and enzyme-catalyzed reaction. Select all the statements that are true. Without enzyme With enzyme A+B Time AB Oa. The reaction is now spontaneous due to the addition of enzyme b. The rate of the enzyme catalyzed reaction is faster than the uncatalyzed reaction O C. The reaction is exergonic O d. The change in free energy for the reaction is greater in the catalyzed reaction, compared to the uncatalyzed reaction e. The enzyme stabilizes the transition state for the reaction Released Energy pesConsider the following free energy diagram for an uncatalyzed and enzyme-catalyzed reaction. Select all the statements that are true. Without enzyme With enzyme A+B Time AB O a. The rate of the enzyme catalyzed reaction is faster than the uncatalyzed reaction O b. The change in free energy for the reaction is greater in the catalyzed reaction, compared to the uncatalyzed reaction O c. The enzyme stabilizes the transition state for the reaction Od. The reaction is exergonic е. The reaction is now spontaneous due to the addition of enzyme Released EnergyYou have a reaction that is very slow on its own, but is accelerated in the presence of an enzyme. Which of the listed effects would be brought about by an enzyme catalyzing this reaction? (Select all that apply) increased kcat increased Keq increased biochemical standard free energy change decreased activation energy
- pse 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 endergonicA 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 BDefine the following terms:a. oxidoreductaseb. lyasec. ligased. transferasee. hydrolasef. isomerase
- If a competitive inhibitor of an enzyme is added to the mixture of the enzyme and its substrate, the inhibitor will: O a. decrease the value of Vmax for the chemical reaction catalyzed by this enzyme O b. decrease the value of KM for the chemical reaction catalyzed by this enzyme O c. increase the value of KM for the chemical reaction catalyzed by this enzyme O d. increase the value of Vmax for the chemical reaction catalyzed by this enzymeAnother of the six enzyme classes is which of the following? enzymes catalyze. These classes include the transferases, isomerases, and ligases. All enzymes can be categorized in one of six major classes based on the reactions the proteases kinases hydrolases phosphatases endonucleases An important factor that influences the rate of a biochemical reaction is the temperature. Raising the temperature of a biochemical reaction has which effect upon the kinetics of the reaction? a) b) c) d) e) increases the free energy of the reactants increases the free energy of the transition state decreases the free energy of the reactants decreases the free energy of the transition state decreases the free energy of the productsTrue/False Question: Enzymes perform catalysis by selectively increasing the rates of the forward reactions, while decreasing the rates of the reverse reactions. O True O False athis resnonse.
- Match each inhibitor with its effect on Michaelis-Menten reactions. Group of answer choices Vmax and apparent Vmax are equal and the apparent Km is greater than Km. The apparent Vmax is less than Vmax and the apparent Km and Km are equal The apparent Vmax and the apparent Km are both lowered to the same degree. The apparent Vmax is less than Vmax and the apparent Km can be either greater than or less than Km.WHich arrow represents the ΔG for the catalyzed reaction and which arrow represnts the activation energry for uncatalyzed reactionAssume that an inhibitor (I) can bind to an enzyme and is modified by the enzyme. The modified inhibitor (I*) is then permanently associated with the active site of the enzyme, thus inhibiting the enzyme activity. Such inhibitors are called: Suicide substrates Transition-state analogs Both A and B Neither A nor Bwhich answer choice is correct im confused... thx