The Bohr effect for hemoglobin allows for A. The preferential binding of oxygen

Question

The Bohr effect for hemoglobin allows for A. The preferential binding of oxygen in the R state. B. The increased ability to carry oxygen at a lower pH C. The increased efficiency of oxygen transport between lungs and metabolic tissues. D. The increased rate of conversion from R to T states. E. The ability to bind CO preferentially to O2 Myoglobin can bind molecular oxygen and can act as a protein. A. Transport B. Storage C. Structural D. Integral E. None of the above The role of an enzyme in an enzyme-catalyzed reaction is to: A. bind a transition state intermediate, such that it cannot be converted back to substrate. B. ensure that all of the substrate is converted to product. C. ensure that the product is more stable than the substrate. D. increase the rate at which substrate is converted into product E. make the free-energy change for the reaction more favorable. Which statement is TRUE of enzyme catalysts? A. Their catalytic activity is independent of pH. B. They are generally equally active on D and L isomers of a given substrate. C. They can increase the equilibrium constant for a given reaction by a thousand fold or more D. They can increase the reaction rate for a given reaction by a thousand-fold or more. E. To be effective, they must be present at the same concentration as their substrate Which statement about enzyme-catalyzed reactions is FALSE? A. At saturating levels of substrate, the rate of an enzyme-catalyzed reaction is proportional to the enzyme concentration. B. If enough substrate is added, the normal Vmax of a reaction can be attained even in the presence of a competitive inhibitor C. The rate of a reaction decreases steadily with time as substrate is depleted D. The activation energy for the catalyzed reaction is the same as for the uncatalyzed reaction, but the equilibrium constant is more favorable in the enzyme-catalyzed reaction. E. The Michaelis-Menten constant Km equals the [S] at which V 1/2 V

Explanation / Answer

The bohr effect for hemoglobin allows for the ability to bind CO preferentially to O2

Myoglobin can bind molecular oxygen and can as a storage protein

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