Question

What is the method called that allows the movement of a single molecule or a small group of molecules to be tracked using antibodies linked to small particles of gold, which appear as dark spots when tracked through video microscopy?

1) Fluorescence microscopy
2) Scanning electron microscopy
3) Transmission electron microscopy
4) Dark-field microscopy

Answer 1

The method is called immunofluorescence assay. It uses fluorescence microscopy to track the movement of molecules using antibodies linked to small particles of gold.

Step-by-step explanation:

The method is called immunofluorescence assay. It uses fluorescence microscopy to track the movement of molecules using antibodies linked to small particles of gold. When these particles appear as dark spots when tracked through video microscopy, it allows for the visualization of the location of the molecules.