Activated B cells divide rapidly to produce
A. effector cells.
B. memory cells.
C. phagocytic cells.
D. effector cells and memory cells.
E. effector cells and phagocytic cells.
D
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Women with breast cancers that are estrogen-sensitive ____
a. become ill when taking prescription estrogen b. can exacerbate their symptoms with only a small increase in estrogen levels c. are in danger of faster growth of cancer cells in the presence of estrogen d. will often experience cancer remission with increased uptake of estrogen e. do not produce their own estrogen and must obtain it through diet or supplements
The chromosome shorthand ________ is used to designate a normal male.
A) 45, X B) 46, XX C) 46, XY D) 47, XXY
Tropisms explain how plants can move from place to place
Indicate whether the statement is true or false.
The term "biotech barnyards" refers to
a. the production of human products by farm animals. b. the development of new species of farm animals. c. the increased production of milk, egg, wool, etc. d. modern methods of raising more animals on less feed. e. the creation of transgenic animals that can produce several products