Why do basic dyes attach to most bacterial surfaces
A)Most bacterial surfaces are negatively charged.
B)Bacterial cells take up safranin.
C)Most bacterial surfaces resist taking up the stain.
D)Most bacterial surfaces do not have a charge.

Question

Quizplus · Accepted Answer

Basic dyes are positively charged and are attracted to negatively charged surfaces. Most bacterial surfaces are negatively charged due to the presence of acidic components such as lipopolysaccharides, teichoic acids or phospholipids in their cell walls. Therefore, basic dyes are able to attach to most bacterial surfaces easily.

Why Do Basic Dyes Attach to Most Bacterial Surfaces