| A | B |
|---|
| cell cycle | regular sequence of growth and division that cells undergo |
| interphase | a period before cell division occurs and the first stage in the cell cycle |
| replication | cell makes a copy of the DNA in its nucleus |
| mitosis | stage during which the cell's nucleus divides into two new nuclei |
| chromosome | each doubled rod of condensed chromatin |
| chromatid | each identical rod, or strand, of the chromosome |
| cytokinesis | the cytoplasm divides, distributing the organelles into each of the two new cells |
| metaphase | chromosome pairs line up at the equator of the cell |
| anaphase | chromosome pairs are pulled apart to opposite sides of the cell |
| prophase | in preparation to divide chromosomes form, spindle fibers appear and the nucleus dissolves |
| telophase | the nuclear membranes reform around the chromatids as the cell begins to stretch in preparation to divide |
| DNA molecule | made up of 2 nitrogen base rungs on a deoxyribose and phosphate ladder |
| double helix | shape of the DNA molecule |
| adenine | always pairs with thymine |
| guanine | always pairs with cytosine |
| longest cell stage where growth and replication happens | interphase |
| centromere | connects the two chromotids to form a chromosome |
