Name: __________________________________________ Date:_______________ Period:_______
Cells Alive! Lab http://www.cellsalive.com/ For iPad use, use the Puffin Academy app. Hover over the ‘Science’ tab at the top of the page, then click on ‘Biology’. You will find “Cells Alive!” on the second page of the results.
Cell Cycle (link on the left underneath “Interactive…”) 1. How long does interphase usually last in mammalian tissue? 2. What does the cell stop doing in G0 phase? 3. What is an example of a cell type that is typically in G0 phase? 4. During which phase does cell growth and protein production stop? 5. During which phase is DNA duplicated? 6. What do cells do in the G1 stage? 7. During which stage of mitosis is there a “checkpoint” for division? 8. Which other phases of the cell cycle have “checkpoints”? BONUS: What would happen if the cell did not have everything it needed (big enough, DNA intact, all organelles present, etc.) at a checkpoint (not in Cells Alive)? 9. Which of the phases of the cell cycle is the shortest? 10. During the G2 phase, the cell will continue to ___________________________. 11. Which phase (G1, S, G2, or M) of the cell cycle is the longest? 12. Once a cell enters G0 phase, is it stuck forever in that phase? 13. How much more DNA does the cell have at the end of the S phase? 14. During which phase will the cell go from one to two cells (divide)? 15. Which phase is analogous to doubling the ingredients for a chocolate chip cookie recipe? 16. Draw the cell cycle below. Label each phase, and have them in the correct order. Don’t forget Go phase!
Mitosis (link on the left underneath “Interactive…”) 1. During which phase are the sister chromatids pulled apart? 2. Where do those chromatids move to once they are pulled apart? 3. In what phase does the nucleolus fade (disintegrate)? 4. What does chromatin consist of? 5. TRUE or FALSE: Each sister chromatid that makes up a chromosome contains the same genetic information. 6. Which phase is the longest of the complete cell cycle? 7. In what phase do chromosomes line up at the center of the cell? BONUS: What is the center of the cell called (not listed on Cells Alive)? 8. The ________________________ disappear in telophase. 9. During this phase, the cell officially splits from one cell to two daughter cells. 10. What is a kinetochore? 11. What are microtubules responsible for? 12. In what phase do microtubules disassemble? 13. In what phase does the nuclear envelope break down? 14. TRUE or FALSE: There are two new daughter cells at the end of telophase. 15. From what organelle do spindle fibers elongate? 16. Click on each stage in the animation. Draw what the cell looks like in each stage in order below.
