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A microbiologist is reading a sputum culture on the bench. There is growth on the SBA and chocolate (CHOC) plates, but no growth on the MacConkey (MAC) plate. The colonies growing on the SBA have produced a wide, deep, clear zone of b-hemolysis around and under the colonies. What organism could this be?

A young girl goes to her physician’s office with a fever, headache, and a sore throat. The mother states the girl has a fever of 38.8°C (102°F). What test should the physician order?

Which of following is found in the cell wall made of streptococci and enterococci?

What organism on SBA has grayish white colonies surrounded by a small zone of b-hemolysis?

Look at the picture and fill in the blanks. CNS.jpg The bacterial isolate growing in the top half of the plate is Novobiocin [BLANK-1] and identifies to be [BLANK-2] and belongs to the genus [BLANK-3]

What mechanism allows strict anaerobes to grow in the cervices and areas between the teeth when plaque is present?

Diphtheria is a disease produced by Corynebacterium diphtheriae. However, not all C. diphtheriae bacteria produce the toxin that causes this disease. To produce the toxin, the bacteria must first become infected with a bacteriophage. The process by which bacterial genes are transferred to new bacteria by the bacteriophage is called

The outer cell wall of the gram-negative bacteria serves three important functions, which includes all the following, except:

The tech needs to sterilize a piece of equipment that cannot be autoclaved or gas sterilized because the equipment contains lenses, metal, and rubber components. What solution should be used to sterilize this piece of equipment?

Engineering controls and work practice controls to ensure Standard Precautions are followed include all the following, except