Telomere maintenance in cancer cells is the result of
A) natural cell aging.
B) active telomerase activity.
C) the exchange of DNA between chromosomes.
D) viral infection.
E) Both B and C result in telomere maintenance.
Answer: E
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The original differentiation of prokaryotes and eukaryotes was based on structures found in prokaryotes that are lacking in eukaryotes.
Answer the following statement true (T) or false (F)
A serious and sometimes fatal allergic reaction is
a. anaphylactic shock. b. toxic shock. c. septic shock. d. uremic shock. e. compensated shock.
Irrigated land accounts for approximately what percentage of human food production?
a. 10 b. 30 c. 50 d. 75 e. 90
For most atoms, when does the configuration of electrons make the atom unreactive?
a. when the atom has moved all of its electrons to its outermost shell b. When the atom has as many protons as neutrons c. When the atom achieves a zero net charge d. When the atom as 8 electrons in its outermost shell