Which of the following is associated with nematodes?

a. partial digestive system
b. specialized excretory system
c. complete digestive system
d. complete nervous system


c. complete digestive system

Biology & Microbiology

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Which of the following belongs to the Trematoda class of flatworms?

a. internal parasites of mollusks b. nematodes c. internal parasites of vertebrates d. tapeworms

Biology & Microbiology

Which of the following characteristics is NOT

found in all animal groups?

a. multi-cellularity b. coelomate c. heterotrophy d. symmetry e. more than one of these

Biology & Microbiology

Lyme disease becomes chronic because

A) Borrelia changes its surface antigens frequently. B) Borrelia can lie dormant in liver cells. C) the bacterium resists phagocytosis. D) Borrelia is an intracellular parasite of erythrocytes. E) the bacterium resists phagocytosis and "hides" erythrocytes.

Biology & Microbiology

If an outbreak of smallpox were to occur, vaccinations would be offered to:

A) anyone at risk of infection. B) emergency personnel only. C) the entire US population. D) immunocompromised people only.

Biology & Microbiology