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

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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?

Biology & Microbiology

The second messenger for the hormone mechanism in the accompanying figure is:

a. ATP. b. G protein. c. cAMP. d. calmodulin. e. Ca2+.

Biology & Microbiology