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Mitosis and Meiosis Webquest Honors Biology Name: ________________________ Date: ___________ Period: _______ Learning Target: I can evaluate the role of mitosis and meiosis as it relates to growth and repair of the human body. PART A: Prokaryotic Cell Division: Start at the following webpage: http://www.cellsalive.com/cells/bactcell.htm 1. Name three ways prokaryote cells differ from eukaryote cells. a. ______________________________________________________________________________ b. ______________________________________________________________________________ c. ______________________________________________________________________________ 2. Draw a prokaryotic cell: Go to the following webpage: http://www2.estrellamountain.edu/faculty/farabee/Biobk/BioBookmito.html 3. Write your own definition of binary fission: ________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Go to the following webpage: http://plaza.ufl.edu/alallen/pgl/modules/rio/stingarees/module/index.html 4. List the four organelles involved in cell division: a. _________________________ c. _________________________ b. _________________________ d. _________________________ 5. What is the role of the centrioles in cell division? ___________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Click on the tab, “What Does Mitosis Do?” 6. What are the 2 major functions of mitosis? ________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Click on the tab, “Built-in Controls in Mitosis” 7. What are the 2 ways that cells “know” to stop dividing? ______________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ Go back to the following webpage: http://www2.estrellamountain.edu/faculty/farabee/Biobk/BioBookmito.html 8. What ends the cell division process where one cell splits from the sister cell? ______________________ ____________________________________________________________________________________ 9. Some cells divide rapidly. Example? _____________________________________________________ Some cells do not divide at all after maturity. Example? ________________________________ 10. In binary fission, are the reproduced cells genetically the same or different from each other? _________________________________________________________________________ 11. What is the genetic relationship between resulting cells in mitosis (genetically the same or different)? ____________________________________________________________________________________ 12. Label the following steps of the cell cycle: Go to the following webpage: http://www.cellsalive.com/ 1. Click on the right side where it says “Cell Cycle” 2. Describe each part of the cycle below: a. Interphase: ____________________________________________________________________ ______________________________________________________________________________ b. G0: __________________________________________________________________________ ______________________________________________________________________________ c. G1: __________________________________________________________________________ ______________________________________________________________________________ d. S: ___________________________________________________________________________ ______________________________________________________________________________ e. G2: __________________________________________________________________________ ______________________________________________________________________________ f. M: ___________________________________________________________________________ ______________________________________________________________________________ PART B: Meiosis Please go to the following webpage: http://www.cellsalive.com/meiosis.htm 13. Why is meiosis important? _____________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 14. Start the animation. What do the chromosomes do in Prophase I? _____________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ 15. Compare how chromosomes line up on the equator (for separation) in Metaphase I and II? Include a diagram. ____________________________________________________________________________ ____________________________________________________________________________________ 16. In which phase are the number of chromosomes divided in half? _______________________ Is this part of meiosis I or meiosis II? ______________________________ 17. Label the following steps of Meiosis: 18. How does mitosis and meiosis play a role in the growth and development of the human body? Use all the information you have read and learned so far to answer this question. ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ____________________________________________________________________________________ ___________________________________________________________________________________ PART C: Comparing and Contrasting Mitosis and Meiosis Visit the following web pages to compare and contrast mitosis and meiosis. http://www.biology.arizona.edu/CELL_BIO/tutorials/meiosis/problems.html http://www.cellsalive.com/meiosis.htm http://www.stolaf.edu/people/giannini/flashanimat/celldivision/meiosis.swf http://www.pbs.org/wgbh/nova/baby/divide.html# Fill in the following Venn Diagram with the terms listed below: Terms: Asexual reproduction Sexual reproduction Different Chromosome number One part to cell division Two parts to cell division (I and II) Chromosomes Mitosis ONLY Haploid Sex cells Somatic cells Cell division Growth Human reproduction BOTH Mitosis & Meiosis Meiosis ONLY