Eosin-methylene blue agar (EMB) is a commonly used bacteriological medium for growing gram-negative bacteria from complex environments. It contains two dyes, eosin and methylene blue, as well as the sugar lactose. Eosin is a pH indicator that changes color when the medium is acidic, while methylene blue inhibits the growth of most gram-positive bacteria. If an organism consumes lactose, acid will be produced, causing the bacterial colonies to change color. Based upon this description, this medium is

Which example represents deductive reasoning?

Which of the following historical microbiologists’ contributions resulted in naming a mouthwash after his likeness?

The scientific name of a microorganism is a combination of the _, which is capitalized, followed by the _, which begins with a lowercase letter.

Two functions of bacterial appendages are _ and _

Your microscope has a resolving power of 0.15 μm. The specimen that you will be observing has bacterial cocci the size of 0.1 μm in diameter. Which of the following statements is correct?

The following image shows the results of a staining procedure done in the lab. Culture A is on the left, Culture B is shown on the right. Based on this, which of the following is true?  

Two structures that allow bacteria to adhere to surfaces are _ and _

During the rising phase of an action potential, Na⁺ entry causes depolarization, and that depolarization promotes the opening of additional voltage-gated Na⁺ channels.

A scientist places bacteria and viruses into separate nutrient-rich solutions that contain no living cells. Which outcomes would be expected? Select all that apply.