Carcinogens are best described as
A. substances within the body that can cause mutations.
B. environmental mutagens that cause cancer.
C. tumors that invade surrounding tissues.
D. substances that increase the growth rate of cells.
Answer: B
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An example of a drug that provides passive immunity, artificially acquired, is ________
A) a vaccine B) polio virus vaccine C) hepatitis immune globulin D) all of the above
Some of the main purposes of assessment are diagnosis, placement, monitoring of progress, determination of achievement, and evaluation of instructor effectiveness.
Answer the following statement true (T) or false (F)
In the acquired immune system, helper T cells do all of the following EXCEPT
A. first detect an infection. B. produce antibodies. C. enhance the innate immune system. D. alert B cells that an infection has occurred.
Tom Molineaux
A. Molineaux fought Cribb in a rematch and lost again. B. went to England to fight the British champion, Tom Cribb; Molineaux fought Cribb in the rain and in the fortieth round, Cribb was declared the winner. C. was a former slave and became America's first well-known pugilist. D. All of the answers are correct.