DNA makes RNA by transcription 4. RNA makes proteins by translation 1. Notes on Nucleic Acids A. Nucleotides 1. Nucleic Acids are made of many nucleotides connected together. Nucleotides are made of a phosphate group connected to a sugar, which is connected to a nitrogenous base.
Purines have two ring structures.
Pyrimidines have single ring structures. A Special Nucleotide 1. ATP is the immediate energy source for all living things 2. ATP is composed of 3 phosphate groups connected to ribose, which is connected to adenine 3. ATP is produced in the cytoplasm or mitochondria during respiration 4.