Problem:
Question 1: What are pentoses? To what organic group do pentoses belong? Are nucleotides formed of only one type of pentose?
Question 2: Into which two groups can the nitrogen-containing bases that form DNA and RNA be classified? What is the criterion used in that classification?
Question 3: Concerning the nitrogen-containing bases that participate in nucleotides, what is the difference between DNA and RNA?
Please Explain don't just write the answer.