To study the details of protein molecules on the surface of a cell, a biologist would likely use a

scanning electron microscope

transmission electron microscope

compound light microscope

dissecting microscope

scanning electron microscope is the correct answer.

Explanation:

Scanning electron microscope that uses a focused beam of the electron over a surface to form an image.

electron interacts with the atom present in the sample and it produces various signals that are used to get the information about the composition and details structure of protein molecule.

scanning electron microscope use in the research works, industrial work, forensic investigations.

the question isn't complete here so i can't right an answer '_'