In gram staining, the dye must sit on the slide containing the cells for ___. 30 seconds1 minute10 minutes5 seconds

The first dye used in gram staining is ____. crystal violetsafraninmethylene blue

You are performing a Gram stain on gram-positive bacteria and you stop after the addition of the first dye. What is the appearance of the bacteria at this point?Question 13Answera.purpleb.colorlessc.redd.brown

Gram staining is based on:a) the ability of the bacterial cell wall to retain crystal violet dyeb) the lysis of bacterial cellsc) differences in bacterial shape and sized) growth of bacterial cells

Why must fresh cells be used when performing a Gram stain?

The key differential step in the Gram stain is: Group of answer choices none is considered differential the application of crystal violet the application of the iodine mordant application of safranin red dye the alcohol wash step