| A | B |
| Nucleotides | the repeating subunits in both DNA and RNA |
| Deoxyribose | five-carbon sugar molecule |
| Adenine | nitrogen base that is a component of a nucleotide and ATP |
| Guanine | a nitrogen base; one component of a nucleotide |
| Thymine | a nitrogen base, one component of a nucleotide |
| Cytosine | a nitrogen base; a pyrimidine of DNA and RNA |
| Purine | an organic molecule that has a double ring of carbon and nitrogen atoms |
| Pyrimidine | an organic moleculethat has a single ring of carbon and nitrogen atoms |
| Double Helex | the two strands twist around a central axis to form a spiral structure |
| Hydrogen Bond | a type of chemical bond in which atoms share a hydrogen nucleus |
| Ribose | the five-carbon sugar in RNA |
| Uracil | a nitrogen base found in RNA |
| Messenger RNA | is a single, uncoiled strand that transmits information from DNA for use during protein synthesis |
| Transfer RNA | is a single strand of RNA folded back on itself in hairpin fachion, allowing some complementary bases to pair |
| Ribosomal RNA | RNA in globular form, is the major constituent of the ribosomes |
| Transcription | the process in which RNA is made from DNA |
| Genetic Code | the system that contains information needed by cells for proper functioning |
| Codon | a spacific group of three sequential bases of mRNA |
| Anticodon | a sequence of three bases that are the opposite of the codon |
| Translation | the process of assembling protein molecules from information encoded in mRNA |