1. | Mg plays role in neuromuscular function and interneuronal transmission. |
2. | The daily requirement of Mg and Ca in the human body is estimated to be 0.2-0.3 g. |
3. | All enzymes that utilize ATP in phosphate transfer require Ca as the cofactor. |
4. | The bone in the human body is an inert and unchanging substance. |
Which of the following statements is false?
1. | Ca2+ ions are important in blood clotting |
2. | Ca2+ ions are not important in maintaining the regular beating of the heart |
3. | Mg2+ ions are important in the green parts of plants |
4. | Mg2+ ions form a complex with ATP |
Which of the following biologically important ions is also a constituent of the sodium pump?
1. Ca2+
2. Mg2+
3. K+
4. Fe2+
Match List I with List II for the composition of substances and select the correct answer using the code given below:
List-I Substances |
List-II |
(A) Plaster of paris | (i) CaSO4. 2HO |
(B) Epsomite | (ii) CaSO4.½H2O |
(C) Kieserite | (iii) MgSO4.7H2O |
(D) Gypsum | (iv) MgSO4.H2O |
(v) CaSO4 |
Code :
(A) | (B) | (C) | (D) | |
1. | (iv) | (iii) | (ii) | (i) |
2. | (iii) | (iv) | (i) | (ii) |
3. | (ii) | (iii) | (iv) | (i) |
4. | (i) | (ii) | (iii) | (v) |