A closed circulatory system is seen in:
a. leeches only
b. roundworms only
c. flatworms only
d. cnidarians only
e. both earthworms and leeches
e
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Which best describes the difference between chronic and acute lymphocytic leukemias?
A) Chronic lymphocytic leukemias are exclusive of T-cell origin. B) Acute lymphocytic leukemias have a high response rate to chemotherapy. C) Chronic lymphocytic leukemias have a shorter survival time. D) Acute lymphocytic leukemias progress more slowly.
A chromosome’s gene sequence that was ABCDEFG
before damage and ABFEDCG after is an example of a. inversion. b. deletion. c. duplication. d. translocation. e. aneuploidy.
Which primates are included within the suborder Prosimii?
a. tarsiers b. monkeys c. monkeys and apes d. lemurs, galagos, and lorises e. monkeys, apes, and humans
Which of the following genes may attribute to the virulence of H. pylori by encoding for outer membrane proteins that mediate adherence to a specific blood group antigen on the surface of gastric epithelial cells?
a. babA b. iceA c. cagA d. vacA