In an RNA strand, which nitrogenous base replaces $\mathrm{thymine}$?

The nitrogenous base $\mathrm{adenine}$ is found in all members of which of the following groups of molecules?

Which nucleotide base in $DNA$ is replaced by uracil in $RNA$?

Which of the following biomolecules contain $N$?

Which of the following are the four nitrogenous bases found in $\mathrm{RNA}$?

Which nitrogenous base is not found in $\mathrm{DNA}$?

Which of the following are the four nitrogenous bases found in $\mathrm{RNA}$?

Which nitrogenous base is not found in $DNA$?

Which of the following nitrogenous bases is found in $DNA$ nucleotides but not in $RNA$?