The gram stain of this microbe showed that it is gram positive because it stained purple. This microbe is coccus shaped and forms in tetrads. The colony forms as a yellow, shiny round blob. The EMB agar showed no growth or change in color, also indicating the microbe was gram positive and a non-fermenter.

Lac positive By utilizing the lactose available in the medium, Lac+ bacteria such as Escherichia coli, Enterobacter and Klebsiella will produce acid, which lowers the pH of the agar below 6.8 and results in the appearance of pink colonies.

Selective and Differential Media MacConkey agar not only selects for Gram-negative organisms by inhibiting Gram-positive organisms and yeast but also differentiates the Gram-negative organisms by lactose fermentation. Escherichia coli and other lactose ferments will produce yellow or orange colonies.

Growth conditions: Temperature range: 4- 45°C (39-113°F); can survive refrigeration and freezing. Optimum Temperature: 37°C (98.6°F) pH range: can survive at pH 3.6.

According to EPA standards, a disinfectant should be able to kill 99.9 percent of disease-causing bacteria and viruses. Vinegar only works against some germs, like E. coli and Salmonella. The best way to disinfect your home or workspace is to use an EPA-registered disinfectant.

Not wiping well after urinating or wiping back to front and getting stool on the skin can cause it. Too vigorous wiping as well as bubble baths and soaps can be irritating.

It’s often been said that the grass is always greener on the other side. Well when it comes to wiping your butt, it turns out the toilet paper is just as brown no matter how exactly you wipe it, sitting or standing. According to a social media poll, most men sit down – and didn’t know of any other way until now.