Which of the following agents is used to treat cancer?
a. zoonosis c. chemotherapy
b. bacteria d. all of the above
C
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Because the heart must work constantly, the cardiac muscles must ________.
A. contract less often than other muscles B. receive a generous blood supply C. be under constant voluntary control D. contain longer fibers than other muscles
During a typical immune response, activated B cells mature into cells that produce ________, which bind(s) to and attack(s) foreign invaders.
A) antigens B) perforins C) antibodies D) heparin E) complement proteins
Chromosomes are lined up at the equator of the cell during this stage of mitosis.
prophase anaphase metaphase telophase
Which bone forms the posterior floor and wall of the skull?
A) frontal B) occipital C) parietal bones D) temporal bones