Name:________________________________________Date:___________Period:_______ X Biology Chapter 5 Review 5.1 and 5.2 1. Question What factors limit the size of a cell? Answer surface area and volume 2. Which increases faster? volume 3. Cells want a (large or small) surface area to volume ratio? 4. What are the two stages of the cell cycle? large 5. What are the 3 parts of interphase (in order) 6. What happens during the S phase? G1 SG2 7. Why do some cells divide more often compared to others? 8. What is mitosis? Wear and tear/under stress 9. What is cytokinesis? Division of the cytoplasm 10. What makes up a chromosome? Two identical chromatids/sister chromatids 11. How does DNA fit into a cell? DNA wraps around histone proteins 12. What is mitosis used for in single celled organisms? 13. What is mitosis used for in multi celled organisms? 14. What stage is a cell in after mitosis is complete? 15. What stage are cells in that no longer divide? 16. What is the correct sequence of events for the cell cycle? Reproduction 17. What are spindle fibers made of? microtubules 18. What structure attaches sister chromatids together? 19. How do prokaryotic cells reproduce? centromere 20. How are prokaryotic chromosomes different from eukaryotic chromosomes? Prokaryotic – circular and one Eukaryotic – linear and many interphase and mitotic phase DNA synthesis Division of a nucleus into two identical nuclei growth, repair, make new cells G1 of interphase G0 (frozen in G1) G1 S G2 mitosis (PMAT) cytokinesis Binary fission State the phase 21. Period of growth and normal cell activity ____I or G1______ 22. Sister chromatids line up at the equator _____M_____ 23. Centromere divides ______A____ 24. Nuclear membrane reforms ______T____ 25. Chromosomes become visible _____P_____ 26. Nuclear membrane and nucleolus disappear _____P_____ 27. DNA replicates _____S_____ 28. Organelles replicate _____G2_____ 29. Centrosomes migrate to opposite poles _____P_____ 30. Longest part of the cell cycle _____I_____ Terms to Know: cell plate cleavage furrow sister chromatids cell cycle mitosis cytokinesis chromosome histone centromere chromatid prophase metaphase anaphase telophase telomere Label the stages: 1 = ANAPHASE 2 =INTERPHASE 3 = METAPHASE 4 = PROPHASE 5 = TELOPHASE