The lons are responsible for electric potential across the cell membrane are
(A) ",Ca^(+2)&Mg^(+2)],
(B) ",Na^(+)&K^(+)],
(C) ",Ca^(+2)&Zn^(+2)]
(D) ",Cs^(+)&Rb^(+)]]

Ca^(2+)" and "Mg^(2+)

This ion is responsible for unmasking of active sites for myosin during muscle contraction? (A) "K^(+) (B) "Mg^(2+) (C) Ca(2+) (D) "Na^(+)

Hormone, responsible for raised level of Ca^(+2) in blood is

Name the species that will be isoelectronic with the following atoms or ions. (a) Ca^(2+) , (b) Ne , (c ) Cl^(ɵ) ,(d) Rb^(o+)

|[bc,ca,ab],[(b+c)^(2),(c+a)^(2),(a+b)^(2)],[a^(2),b^(2)c^(2)]|

How many of the following ions produce colour in the bunsen flame when introduced directly or as a mixture with other substance. K^(+) , Rb^(+) , Cs^(+) , Be^(2+) , Mg^(2+) , Ca^(2+) , Sr^(2+) , Ba^(2+) , Zn^(2+) , BO_(3)^(3-)

Which of the following is an amphoteric hydroxide? ( (A) Ca (OH)_(2) ( (B) Mg(OH)_(2) (C) Be(OH)_(2) (D) Sr(OH)_(2)