Identify the TRUE statement(s).

A. Both eukaryotic and laboratory-derived RNA contain the nitrogenous base thymine (T).

B. Only unmodified nitrogenous bases are found in eukaryotic RNA.

C. Eukaryotic RNA contains modified and unmodified nitrogenous bases.

D. RNA made in the laboratory contains only modified nitrogenous bases.

E. Laboratory-derived RNA contains modified and unmodified nitrogenous bases.

F. RNA from eukaryotic cells contains only modified nitrogenous bases.

G. Only unmodified nitrogenous bases are found in laboratory-derived RNA.

RNA in eukaryotic cells contains uracil instead of thymine, and both eukaryotic and laboratory-derived RNA contain modified and unmodified nitrogenous bases.

Explanation:

RNA in eukaryotic cells contains modified and unmodified nitrogenous bases, including adenine, guanine, cytosine, and uracil (U), not thymine (T).

Laboratory-derived RNA also contains both modified and unmodified nitrogenous bases, resembling the composition of eukaryotic RNA.

The difference in nitrogenous bases between DNA and RNA lies in uracil replacing thymine in RNA.

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