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Classification of Enzymes

Which of the ...

Question

Which of the following is the cofactor of carbonic anhydrase?

A

Cu

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B

Zn

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C

Fe

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D

Mg

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Solution

The correct option is B
Zn

Carbonic anhydrases are enzymes that catalyse the important reversible reaction that converts carbon dioxide and water to bicarbonate and protons, (and back). These enzymes generally have zinc as a cofactor. This reversible reaction is important in animals to maintain acid-base balance in blood and other tissues, and to help transport carbon dioxide out of tissues.

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Q. Which one of the following is the cofactor of carbonic anhydrase?

E^{o}

M g^{2 +} / M g = - 2.37 V, Z n^{2 +} / Z n = - 0.76 V

F e^{2 +} / F e = - 0.44 V

Which of the following statement is correct?

E^{⊖} o f M g^{2 +} | M g, Z n^{2 +} | Z n,

F e^{2 +} | F e

- 2.37 V

- 0.76 V

0.44 V

, respectively. Which of the following is correct ?

Q. (i) Arrange the following metals in an increasing order of their reactivity towards water: Zn, Fe, Mg, Na.
(ii) Arrange the following in increasing order of their oxides to get reduced with carbon: Al, Na, Fe, Cu.
(iii) Arrange the following metals in order of decreasing order of their chemical reactivity: Mg, Ca, Cu, Fe, Na, Zn, Pb.

Q. SRP values of

M g^{2 +} | M g

F e^{2 +} | F e

Z n^{2 +} | Z n

- 2.37 V, - 0.44 V

- 0.76 V

respectively. The correct statement is:

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