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

Question

Quizplus · Accepted Answer

Calcium ions are frequently used as second messengers by amino acid-based hormones. Hormones like epinephrine and norepinephrine bind to G protein-coupled receptors on the cell surface, triggering the release of intracellular calcium ions from the endoplasmic reticulum, which can then activate various downstream signaling pathways.

What Ion Is Sometimes Used as a Second Messenger of Amino