Granulomatous amebic encephalitis is caused by

a) Acanthamoeba.
b) Naegleria fowleri.
c) Trypanosoma brucei.
d) Cryptococcus neoformans.


Ans: a) Acanthamoeba.

Biology & Microbiology

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Quality control is set up on a new lot of an indole reagent. Clostridium bifermentans and Clostridium bolteae are used, and the following results are obtained: • C. bifermentans: positive • C. bolteae: negative Which one of the following statements explains this discrepancy?

a. The reagent is most likely expired. b. The incubation time is most likely abbre-viated. c. These two organisms are poor choices; both are indole-positive. d. No discrepancy is present. The results ob-tained are correct.

Biology & Microbiology

What is the movement of part of one chromosome to another chromosome called?

A) inversion B) duplication C) deletion D) translocation

Biology & Microbiology

Which molecule is INCORRECTLY matched

with its component part?

a. fat: fatty acid. b. starch: glycerol. c. protein: amino acid. d. glycogen: glucose. e. nucleic acids: nucleotide

Biology & Microbiology

  ©McGraw-Hill EducationConsider the cladogram shown. Which pair of species shares the greatest number of derived characters (synapomorphies)?

A. 2 and 4 B. 2 and 3 C. 6 and 5 D. 1 and 4 E. 6 and 4

Biology & Microbiology