Which groups of microorganisms are most likely to be found on the skin?
a. Bacteria, yeast and protozoa
b. Protozoa, bacteria and fungi
c. Yeast, fungi and plant spores
d. Fungi, bacteria, and yeast
e. Protozoa, yeast and fungi
a
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To best isolate mutant bacteria that are threonine auxotrophs from a larger population, threonine-rich media should be inoculated and any colonies that form are presumptive auxotrophic mutants.
Answer the following statement true (T) or false (F)
Collagen is a tough, stretch-resistant protein. You would be most likely to find collagen in which type of tissue?
A. nervous B. muscular C. epithelial D. connective E. epithelial and connective tissue
Generally, r-selected organisms exhibit:a
short life spans and early maturity. b. long life spans and extended parental care of offspring. c. long development time to maturity, but small body size. d. large body size and extended parental care of offspring. e. large body size, but short life spans.
Microscopic examination of a lung biopsy shows thick-walled cysts. What is the etiology of the symptoms?
A) Blastomyces B) Coccidioides C) Histoplasma D) Mycobacterium E) Pneumocystis