Biomolecules - Result Question 40
####40. In reference to biological role, $Ca^{2+}$ ions are important in
[1996]
(a) triggering the contraction of muscles
(b) generating right electrical potential across cell membrane
(c) hydrolysis of ATP
(d) defence mechanism
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Solution:
- (a)
(a) $Ca^{2+}$ ions are responsible for triggering contraction of muscles and functions of nerves.
(b) $K^{+}$(and $Na^{+}$ions) are responsible for maintaining right electrical potential across cell membrane.
(c) $Mg^{2+}$ act as a cofactor for hydrolysis of ATP.
