Streptococcal pharyngitis, commonly called "strep throat," is caused by ________.

A. Streptococcus trachius
B. Streptococcus pyogenes
C. Streptococcus pneumoniae
D. Streptococcus mutans


Answer: B

Biology & Microbiology

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Which of the following endocrine organs and hormones are not paired correctly?

A. anterior pituitary gland: vasopressin B. posterior pituitary gland: oxytocin C. hypothalamus: releasing factors D. anterior pituitary gland: growth hormone E. posterior pituitary gland: antidiuretic hormone

Biology & Microbiology

Neutrophils can kill bacteria by nonphagocytic mechanisms.

Answer the following statement true (T) or false (F)

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The characteristic long and narrow “pipe-like” sporophyte that emerges from the parent gametophyte is characteristic of which type of seedless plant?

a. liverworts b. hornworts c. mosses d. ferns

Biology & Microbiology

The principle of disinfection to reduce HAIs (healthcare-associated infections) among patients was initially introduced by

A. L. Pasteur and R. Koch. B. I. Semmelweis and J. Lister. C. P. Ehrlich and A. Fleming. D. J. Snow and R. Koch. E. E. Jenner and L. Pasteur.

Biology & Microbiology