What ion is sometimes used as a second messenger of amino acid-based hormones?
A) sodium
B) calcium
C) iron
D) chlorine

Question

Quizplus · Accepted Answer

Calcium ions are often used as a second messenger in the signaling pathways of amino acid-based hormones. When a hormone binds to its receptor on the cell membrane, it activates a series of signaling molecules that ultimately lead to an increase in intracellular calcium levels. Calcium then triggers a variety of downstream responses, such as activation of enzymes or changes in gene expression.

What Ion Is Sometimes Used as a Second Messenger of Amino