AIDS is caused by a

A) bacterium. B) prion. C) virus. D) viroid. E) fungus.


C

Biology & Microbiology

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Spherical resting cells produced by Sporocytophaga are called ________.

A. microcysts B. heterocysts C. oocysts D. nitrocysts

Biology & Microbiology

A farmer has a localized, painful skin infection. Cultures are set up, and <-hemolytic, cata-lase-negative, and gram-positive bacilli are isolated. Based on this information, which of the fol-lowing biochemical results are expected—urease, H2S production in TSI, and nitrate reduction?

a. Positive urease, positive TSI, and positive nitrate b. Positive urease, negative TSI, and nega-tive nitrate c. Negative urease, positive TSI, and nega-tive nitrate d. Negative urease, negative TSI, and nega-tive nitrate

Biology & Microbiology

Which molecules diffuse into the lymph

vessels during absorption in the small intestine?

a. simple sugars b. triglycerides c. amino acids d. nucleotides e. all of these

Biology & Microbiology

Clostridium tetani, the bacterium that causes tetanus, can survive in soil for up to 40 years. It is most likely in which of the following structures?

A. a cell membrane B. a nucleus C. a cell wall D. a pilus E. an endospore

Biology & Microbiology