Final answer:
Coomassie Brilliant Blue G-250 dye is used in biology and biochemistry labs to stain proteins and visualize them on polyacrylamide gels during gel electrophoresis.
Step-by-step explanation:
The Coomassie Brilliant Blue G-250 dye is commonly used in biology and biochemistry laboratories for staining proteins. It is used in gel electrophoresis and protein sequencing techniques to visualize proteins on polyacrylamide gels. The dye binds to proteins and produces a blue color, which allows researchers to identify and analyze the proteins of interest.