Question

based on the process, what color will gram - positive bacteria cells be in step 3? green colorless purple

Explanation:

In the Gram - staining process, gram - positive bacteria retain the crystal violet - iodine complex and appear purple after the decolorization step (which could be step 3 in some protocols). They do not lose the purple color due to their thick peptidoglycan cell wall.

Answer:

C. purple