How is the distribution of free calcium ions in the living cell detected?
A)fluorescent probes that emit light in the presence of calcium ions
B)antibodies bound to ferritin
C)an electron microscope
D)autoradiography and the distribution of radioisotope
E)NMR imaging

Question

Quizplus · Accepted Answer

Fluorescent probes that emit light in the presence of calcium ions are commonly used to detect the distribution of free calcium ions in living cells. These probes can specifically bind to calcium ions and emit a fluorescent light signal that can be measured and imaged using fluorescence microscopy. The intensity of the fluorescent signal corresponds to the concentration of calcium ions in the cell, allowing researchers to study calcium signaling and regulation in various physiological processes.

How Is the Distribution of Free Calcium Ions in the Living