Replication of DNA
a. produces RNA molecules.
b. produces only new DNA.
c. produces two molecules, each of which is half-new and half-old DNA joined lengthwise to
each other.
d. generates excessive DNA, which eventually causes the nucleus to divide.
e. is too complex to characterize.
C
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a. liver; kidney b. kidney; bone marrow c. red blood cells; bone marrow d. red blood cells; liver e. liver; red blood cells
Deeply weathered soils, with no distinct horizons characteristic of the tropical rain forest, are
A) mollisols. B) andosols. C) oxisols. D) alfisols.
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Which ion channel is primarily responsible for the action potential?
A. The voltage-gated potassium channel B. The non-gated sodium channel C. The voltage-gated sodium channel D. The ligand-gated sodium channel E. The ligand-gated potassium channel