A scientist wants to perform a test that will indicate whether a nucleic acid sample is composed of RNA or DNA. Testing for the presence of which of the following is most appropriate in this situation?
A) uracil
B) nitrogen
C) thymine
D) guanine
E) phosphate

Question

Quizplus · Accepted Answer

Uracil is a nitrogenous base found only in RNA, while thymine is found only in DNA. Therefore, if the test indicates the presence of uracil, the sample is composed of RNA.

A Scientist Wants to Perform a Test That Will Indicate