click below
click below
Normal Size Small Size show me how
Brad Shuler
Biology 121
| Question | Answer |
|---|---|
| what are the 5 phases of the cell cycle? | G1, S, G2, Mitosis, Cytokinesis |
| What occurs in G1, S, and G2? what phase do all three of these make? | G1: cell growth, longesttime the cell undergoes S: synthesis occurs (DNA replication) G2: mitochondria and other organelles replicate, microtubles are made and chromosomes condense |
| What are the 5 phases of Mitosis? | Prophase, Prometaphase, metaphase, anaphase, telophase |
| Explain what happens in each phase. | |
| What is the end result of Mitosis? | 2 daughter cells |
| Define chromatin. | The complex of DNA and protein |
| Define euchromatin and heterochromatin. | heterochromatin: not expressed euchromatin: expressed in certain regions |
| Define kinetochore. | the attachment of the microtubles to the chromosome |
| Define nucleosome. | DNA wrapped around 8 Histone Proteins |
| Define Cytokinesis | PRocess in which cleaves the cell |
| Name the 3 checkpoints of the cell cycle | G1/S , G2/M , late metaphase checkpoint |
| Explain what happens in each check point |