| A | B |
|---|
| DNA | molecule that is made of nucleotides and holds all our genetic information |
| RNA | nucleic acid that helps make proteins or ribosomes |
| gene | segment of DNA that holds the infomation for making a protein |
| chromosome | a structure formed when DNA wraps around a protein |
| nucleotide | building block of DNA or RNA composed of a sugar, phosphate, and nitrogen base |
| sugar-phosphate backbone | portion of DNA that forms the sides of the ladder structure |
| nitrogen base | If DNA were a ladder, these would be the rungs or steps. |
| mitosis | process of cell division for most body cells |
| interphase | stage before mitosis in which DNA replication occurs |
| DNA replication | process by which DNA is copied |
| semiconservative | half of the DNA strand is old and half is new |
| complimentary | opposite nucleotide pairs that fit together |
| prophase | stage of mitosis in which chromosomes form and the nucleus of a cell disappears |
| metaphase | stage of mitosis in which chromosomes line up in the center of the cell attached to spindle fibers |
| anaphase | phase in which sister chromatids split |
| telophase | opposite of prophase, nucleus reforms and DNA unwinds to reform chromatin |
| cytokinesis | division of cytoplasm of a cell |
