Before clotting factors from recombinant DNA became available, more than half of hemophiliacs in the U.S. acquired
HIV from injection of clotting factors obtained from donated blood.
a. True
b. False
True
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Reptiles can maintain their internal body temperature by
A. behavioral mechanisms. B. drinking warm or cool water. C. eating and oxidizing more food. D. an effective insulating covering. E. rerouting blood to distribute heat.
Which sequence of the cell cycle is correct?
a. prophase, metaphase, interphase, telophase, anaphase b. prometaphase, anaphase, prophase, telophase, interphase, metaphase c. anaphase, interphase, telophase, prometaphase, prophase, metaphase d. interphase, prophase, prometaphase, metaphase, anaphase, telophase e. interphase, metaphase, prometaphase, prophase, telophase, anaphase
What phase does it occur when the sister chromatids of the chromosomes are still attached to the centromere region?
What will be an ideal response?
The second messenger for the hormone mechanism in the accompanying figure is:
a. ATP. b. G protein. c. cAMP. d. calmodulin. e. Ca2+.