|
 DNA | A molecule that is present in all living cells and that contains the information that determines traits |
| Nucleotide | In a nucleic acid chain, a subunit that consists of a sugar, a phosphate and a base |
| RNA | Ribonucleic acid; A molecule that is present in all living cells and plays a role in protein production |
| Ribosome | A cell organelle composed of RNA and protein; the site of protein synthesis |
| Protein | A molecule that is made up of amino acids and that is needed to build and repair body structures and regulate body processes |
| Thymine | Subunit of a nucleotide that pairs with adenine |
| Cytosine | Subunit of a nucleotide that complements (pairs with) guanine |
| Mutation | Change in a DNA sequence that can be harmful or helpful |
| Messenger RNA | The mirror-like copy of the DNA segment that leaves the nucleus |
| Transfer RNA | Deliver amino acids from the cytoplasm to the ribosome |