Cells of complex multicellular organisms often differ in function. Which of the following describes the molecular mechanism that gives rise to different cell types?
A. Cells lose a portion of their genome as
they become specialized.
B. Cells acquire mutations during the process
of differentiation.
C. Different cells express different sets of
genes.
D. Tissues migrate during embryonic
development.
C
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As men age, the prostate may enlarge but not become cancerous. This enlarged prostate may result in ________
A) sterility B) difficulty with urination C) impotence D) constipation
In animal cells, glycolysis and gluconeogenesis are regulated to ensure that both processes are reciprocally active. This regulation involves each of the following compounds except
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