A virus is about 001 microns in diameter You have created a

A virus is about 0.01 microns in diameter. You have created a green-fluorescent protein labeled virus and are tracking it in live cells using a state of the art research quality fluorescence microscope. After capturing an image, you decide to measure the size of the fluorescent viruses in the live cells. Surprisingly, your measurements suggest that the viruses are how big? .01 microns 1 micon 0.2 microns 10 microns

Solution

The answer is 1 micron.

The green fluorescent protein (GFP) is a protein composed of 238 amino acid residues (26.9 kDa) that exhibits bright green fluorescence when exposed to light in the blue to ultraviolet range. The fluorescence quantum yield (QY) of GFP is 0.79.