And so if we stain it with the color purple, with the purple dye and then wash that purple dye away, that purple dye will not be able to remain in that cell wall and so it will be washed away and the bacterial cell will in fact appear pink under the microscope as shown here. So Vibriocolari are curved, rod shaped grand negative bacteria that can infect human cells and in the presence of oxygen. They will in fact use oxygen to produce ATP molecules in a process we call aerobic cellular respiration. Now in the absence of oxygen, they will switch to fermentation to produce those ATP molecules. Now Vibrio cholera can only survive and grow under basic conditions. If we place them into an acidic environment where the PH is low, they will not be able to grow.