Question

Fura-2 is an example of __________________

(a) fluorescent molecule

(b) cell surface receptor

(c) cell surface antigen

(d) oncogene

I have been asked this question in an international level competition.

I'm obligated to ask this question of Cell Signaling and Signal Transduction in portion Cell Signaling and Signal Transduction of Cell Biology

Answer 1

Right answer is (a) fluorescent molecule

To explain I would say: Fura-2 is a highly sensitive, fluorescent molecule that binds to calcium ions by diffusing across the plasma membrane of a cell. This compound was developed in 1980s in the laboratory of Roger Tsien at the University of California, San Diego.