Which of the following is characteristic of ciliates?
A) They use pseudopods as feeding structures.
B) They are often multinucleate.
C) They can exchange genetic material with other ciliates by the process of mitosis.
D) Most live as solitary autotrophs in fresh water.
B
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The chemotherapeutic agent must reach levels in the body that are ________ the pathogen's MIC value if it is going to be effective.
A. equal to B. less than C. greater than D. None of the choices are correct.
In animal cells, microtubules grow from
A. the plasma membrane. B. the outer membrane of the nuclear envelope. C. centrosomes containing centrioles. D. dimerization centers located throughout the cytosol. E. the tips of the chromosomes.
Some protozoans can form _________ that allow them to survive environmental hardships
Fill in the blank(s) with the appropriate word(s).
An important source of vitamin K in the intestine comes from which species?
A) Helicobacter pylori B) Streptococcus mutans C) Vibrio cholerae D) Giardia lamblia E) Escherichia coli