10. Dynamics of Microbial Growth

A pure culture of bacteria is made of…

A bacterial culture grown in a _________________ will not continue to grow exponentially forever, but will stop once the limited nutrients have been consumed.

Match the following choices to the culture descriptions in questions 3 through 6:

a. Chlamydia

b. Coccidioides

c. Histoplasma

d. Mycobacterium

e. Mycoplasma

Microscopic examination of a lung biopsy shows spherules.

Match the following choices to the culture descriptions in questions 3 through 6:

a. Chlamydia

b. Coccidioides

c. Histoplasma

d. Mycobacterium

e. Mycoplasma

This pneumonia etiology requires cell culture.

Match the following choices to the culture descriptions in questions 3 through 6:

a. Chlamydia

b. Coccidioides

c. Histoplasma

d. Mycobacterium

e. Mycoplasma

Microscopic examination of a lung biopsy shows ovoid cells in alveolar macrophages. You suspect these are the cause of the patient’s signs and symptoms, but your culture grows a filamentous organism.

“In the laboratory, a sterile inoculating loop is moved across the agar surface in a culture dish, thinning a sample and isolating individuals.” This statement describes which of the following?

a. broth culture

b. pour plate

c. streak plate

d. dilution plate