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) |