A microorganism that causes an infection is called a
A. avirulent infection.
B. colony.
C. commensal.
D. pathogen.
Ans: D. pathogen.
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If the body recognizes parts of itself as being foreign, this is termed
A. immunodeficiency disease. B. agammaglobulinemia. C. autoimmune disease. D. AIDS.
The three groups in the primate lineage are
A. gorillas, bonobos, and chimpanzees. B. prosimians, monkeys, and hominoids. C. monkeys, gibbons, and orangutans. D. hominines, hominids, and hominoids. E. chimpanzees, gorillas, and humans.
During muscle contraction, the ______ of the sacromere becomes narrower.
A. A band B. I band C. M band D. two of the above
The first hominin species associated with the use of tools was
A) Australopithecus robustus. B) Homo erectus. C) Homo habilis. D) Australopithecus afarensis. E) Homo sapiens.