To model bacterial cells agar cubes were used. agar is a material that absorbs substances from its surroundings. the agar contained an indicator dye and dilute sodium hydroxide (an alkali).the indicator. dye is pink at a ph greater than 8, but becomes colourless when ph falls below 8. figure 1 shows an agar block as well as some of the other equipment used in the experiment. describe a method that the student could have used in her experiment answer