The most common cause of epidemic waterborne diarrheal disease is ________.
A. Naegleria
B. Acanthamoeba
C. Giardia intestinalis
D. All of the choices are correct.
Answer: C
You might also like to view...
The branch of biology that classifies organisms is called ____
a. natural history b. taxonomy c. evolution d. morphology e. paleobiology
Buffers are substances that help resist shifts in pH by
a) releasing to a solution when bases are added. b) both donating to a solution when bases are added, and accepting H+ when acids are added. c) releasing to a solution when acids are added. d) donating to a solution when bases are added. e) accepting from a solution when acids are added.
True multicellularity is a major characteristic of
A. all eukaryotes and a few prokaryotes. B. protists, plants, and animals. C. prokaryotes and protists. D. animals and plants only. E. eukaryotes only.
A 25-year-old man presented with fever, malaise, and a rash on his chest, arms, and feet. Which of the following will be most useful for a rapid diagnosis?
A) bacterial culture
B) microscopic examination of blood
C) serological test for antibodies
D) serological test for antigen
E) viral culture