The amoeba E. histolytica is a pathogen that causes liver abscesses in infected individuals. Which of the following represents the most likely metabolic classification?
a. aerobic phototroph
b. anaerobic heterotroph
c. mixotroph
d. phagocytic autotroph
b. anaerobic heterotroph
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Heavy metals are effective antimicrobial agents but are not widely used because of their high toxicity to humans.
Answer the following statement true (T) or false (F)
Fairy shrimp are filter feeders that obtain organic particles from the water or scrape algae
from surfaces. Based on their feeding habits, fairy shrimp are __________.
a. primary consumers b. primary producers c. secondary consumers d. detritivores
This vertebrate is a fish, has a cartilaginous
skeleton, no jaws, and a tooth-covered tongue. This animal is a
a. shark. b. lamprey. c. coelacanth. d. goldfish. e. more than one of these
The genetic material of HIV consists of _____.
a) single-stranded DNA b) single-stranded RNA c) double-stranded DNA d) double-stranded RNA e) none of the above