315749
Which of the following statements (s) is/are not a biological role of \(\mathrm{Na}\) and \(\mathrm{K}\) ? I. Nerve signals transmission. II. Oxidation of glucose to ATP. III. Clotting of blood. IV. Sugar and amino acid transport.
1 I and II
2 II and III
3 Only III
4 Only IV
Explanation:
Statement III is not a biological role of \(\mathrm{Na}\) and \(\mathrm{K}\). Its correct form are as follows: \(\mathrm{Na}\) and \(\mathrm{K}\) have no role in blood clotting. \(\mathrm{Na}\) and \(\mathrm{K}\) participate in the tansmission of nerve signals, in regulating the flow of water across the cell membranes and in the transport of sugar and amino acids into cells. They participate in the oxidation of glucose to produce ATP. So, the option (3) is correct.
CHXI10:THE S-BLOCK ELEMENTS
315750
Statement A : For biological functions in human body, we need only monovalent \(\mathrm{Na}\) and \(\mathrm{K}\). Statement B : Barium is a divalent ion.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
For biological functions of human body, we need monovalent \(\mathrm{Na}\) and \(\mathrm{K}\) ions and divalent \(\mathrm{Mg}\) and \(\mathrm{Ca}\) ions, which are found in large proportions in biological fluids. Barium is a divalent ion, \(\mathrm{Ba}^{+2}\). So, the option (2) is correct.
315749
Which of the following statements (s) is/are not a biological role of \(\mathrm{Na}\) and \(\mathrm{K}\) ? I. Nerve signals transmission. II. Oxidation of glucose to ATP. III. Clotting of blood. IV. Sugar and amino acid transport.
1 I and II
2 II and III
3 Only III
4 Only IV
Explanation:
Statement III is not a biological role of \(\mathrm{Na}\) and \(\mathrm{K}\). Its correct form are as follows: \(\mathrm{Na}\) and \(\mathrm{K}\) have no role in blood clotting. \(\mathrm{Na}\) and \(\mathrm{K}\) participate in the tansmission of nerve signals, in regulating the flow of water across the cell membranes and in the transport of sugar and amino acids into cells. They participate in the oxidation of glucose to produce ATP. So, the option (3) is correct.
CHXI10:THE S-BLOCK ELEMENTS
315750
Statement A : For biological functions in human body, we need only monovalent \(\mathrm{Na}\) and \(\mathrm{K}\). Statement B : Barium is a divalent ion.
1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
Explanation:
For biological functions of human body, we need monovalent \(\mathrm{Na}\) and \(\mathrm{K}\) ions and divalent \(\mathrm{Mg}\) and \(\mathrm{Ca}\) ions, which are found in large proportions in biological fluids. Barium is a divalent ion, \(\mathrm{Ba}^{+2}\). So, the option (2) is correct.