Which of the following parasites is not generally microscopic in its mature form, even though microbiologists usually study them?
A. amoebae
B. toxoplasmas
C. helminths
D. leishmanias
E. cyclosporas
Answer: C
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The ____ functions as the body’s thermostat
a. glands b. muscles c. brain stem d. sensory receptors e. hypothalamus
Monocytes are the mature form of macrophages; they are found in tissues.
Answer the following statement true (T) or false (F)
Which of the following factors does not interfere with the interpretation of evolutionary time using the molecular clock?
A) Horizontal gene transfer B) Differences in generation time C) Mutations due to background cosmic radiation D) Different selection pressures on different taxonomic groups E) Differences in DNA repair efficiency in different taxonomic groups
Sulfate-reducing bacteria (SRB) are very important in the cycling of sulfur within ecosystems because significant amounts of sulfate are present in almost all aquatic and terrestrial habitats, making SRB widespread and active.
Answer the following statement true (T) or false (F)