11. The fundamental cause of sickle-cell disease is a change in the structure of: (A) blood. (B)capillaries. (C) hemoglobin. (D)red cells. (E)the heart.

11. The fundamental cause of sickle-cell disease is a change in the structure of:
(A) blood.
(B)capillaries.
(C) hemoglobin.
(D)red cells.
(E)the heart.

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B1 · 2025/03/03

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The fundamental cau...

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14. Which one of the following statements 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.

11. The fundamental cause of sickle-cell disease is a change in the structure of:
(A) blood.
(B)capillaries.
(C) hemoglobin.
(D)red cells.
(E)the heart.

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