Calcium ions that act as second messengers are stored in the endoplasmic reticula. Thus the correct answer is option (D) Endoplasmic reticula.
Second messengers are intracellular signaling molecules that cells release in response to extracellular signaling molecule exposure. Cellular physiological changes like proliferation, migration, differentiation, survival, and death are triggered by the second messenger. Hydrophilic, water-soluble calcium ions are molecules. They are present in the endoplasmic reticulum, an intracellular component, and are promptly released as required. They are essential for a variety of crucial processes, such as muscle contractions, neurotransmitter release, and fertilization. Second messengers are intracellular chemical molecules that the cell releases when the extracellular signal molecule is exposed; they transmit messages that the cell has received from receptors on the surface of the cell. Cyclic AMP, cyclic GMP, calcium, inositol triphosphate, and diacylglycerol are examples of second messenger molecules.
The complete question is:
Calcium ions that act as second messengers are stored in _____.
a mitochondria
b lysosomes
c peroxisomes
d endoplasmic reticula
e chloroplasts
To learn more about second messengers please click on the given link: https://brainly.com/question/29761550
#SPJ4
