Nucleic Acids 1) How many categories of naturally occurring nucleic acids are there? a. What’s the difference between them (like in a pentose)? b. What are their purposes? 2) How many parts does a nucleotide consist of? What are they? Nucleic acid = DNA or RNA DNA OR RNA = 3 parts 3 parts = phosphate group, a sugar, + nitrogenous base Pentose sugar = deoxyribose or ribose Missing an O Has an extra O OH H OH OH 3) What kind of reaction links nucleotides together? 4) Describe a segment of DNA or draw a picture. Explain the relationship between the strands as well as what they consist of. As the sugar-phosphate backbone 5) Transcribe this DNA strand: 5’ ATGTCAATGGA Now provide the mRNA: