Question

Basic dyes are used in microbiological staining. Which of the following statement is wrong about mechanism of staining?

• A. The positive ions on the surface of bacteria form a coloured complex with the dye
• B. Ionic exchange between the negative charge on the bacteria and positive charge of dye takes place
• C. Ionic exchange between the positive charge on the bacteria and negative charge of dye takes place
• D. The neutral charge on the surface of bacteria forms a coloured complex with the basic dye

Answer 1

The Correct Option is D

The correct option is (D): The neutral charge on the surface of bacteria forms a coloured complex with the basic dye