Download Mitosis and Meiosis Webquest

Mitosis and Meiosis Webquest
A&P
Name: ________________________
Date: ___________ Period: _______
Objective: In this activity, you will use the following web pages to examine the processes of mitosis and
meiosis. Both of these processes are important in homeostasis as well as human reproduction.
PART A: Cell Growth and Mitosis
Please go to the following webpage: http://plaza.ufl.edu/alallen/pgl/modules/rio/stingarees/module/index.html
1.
2.
3.
4.
What is the role of the cell membrane in cell division?
What is the role of the nucleus in cell division?
What is the role of the centrioles in cell division?
What is the role of the microtubules in cell division?
______________________________________
______________________________________
______________________________________
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Click on the tab, “Why Must Cells Divide?”
5. Why are cells limited in size? ___________________________________________________________
6. Click on the animation. A cell with 2cm sides has what surface area? What volume? ______________
7. What would be the surface to volume ratio? _______________________________________________
8. A cell with a large volume will have a more difficult time doing what? __________________________
Click on the tab, “The Functions of Mitosis”
9. What are the 2 major functions of mitosis? ________________________________________________
Click on the tab, “Built-in Controls in Mitosis”
10. What are the 2 ways that cells “know” to stop dividing? ______________________________________
Please go to the following webpage:
http://www2.estrellamountain.edu/faculty/farabee/biobk/BioBookmito.html
11. What ends the cell division process where one cell splits from the sister cell? _____________________
12. What is the genetic relationship between the cells in mitosis? Are the same or different? ____________
13. Some cells divide rapidly. Some not at all after maturity. Examples? ___________________________
14. How is binary fission a similar process? ___________________________________________________
15. Label the following steps of mitosis:
Website #3: Video of the Process of Mitosis and Cytokinesis -
http://highered.mcgraw-hill.com/sites/dl/free/0072437316/120073/bio14.swf
Play the video and answer the following questions. You may pause as often as needed.
1. The process of mitosis results in _________________________________.
2. During which phase does the nuclear membrane disappear? _________________________________________
3. What is the mitotic spindle made of? _____________________________________________________________
4. During _____________________________________ chromosomes line up.
5. During ________________________________ chromosomes separate and move to opposite ends of the cell.
6. During ________________________________ chromosomes reach the poles of the cell and begin to disappear.
7. During _______________________________ a cleavage furrow appears separating the cell.
Website #4: Animal Cell Going Through the Cell Cycle -
http://www.cellsalive.com/mitosis.htm
Play the video and answer the following questions. If you hit the play button it will go very fast. To slow it
down use the 3rd button called the Step button. You will also have to read the information under the video.
In which stage of the cell cycle does the following occur:
1. Nucleolus is still visible_____________________________________________________
2. Chromosomes align in the center of cell________________________________________
3. Longest part of the cell cycle_________________________________________________
4. Spindle fibers elongate______________________________________________________
5. Cell is cleaved into two daughter cells__________________________________________
6. Chromosomes become visible________________________________________________
7. Cell is preparing for mitosis.__________________________________________________
8. Chromosomes separate______________________________________________________
9. Nucleolus reappears________________________________________________________
PART B: Meiosis
Please go to the following webpage:
http://highered.mheducation.com/sites/0
072495855/student_view0/chapter3/ani
mation__how_meiosis_works.html
16. What is the purpose of meiosis?
___________________________
__________________________
17. Start the animation. What is the
first thing the chromosomes do?
___________________________
18. Crossing over occurs in Prophase
I. What is the significance?
___________________________
__
19. When the cells divide again, what
happens to the number of
chromosomes?
__________________
20. Label the following steps of
Meiosis:
http://www.phschool.com/scienc
e/biology_place/labbench/lab3/co
ncepts2.html
PART C: Comparing and Contrasting 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#
After visiting the following web pages, compare and contrast mitosis and meiosis.
Then, fill in the following Venn Diagram of the terms listed below.
Terms:
Sexual reproduction
Haploid Cells
Asexual reproduction
Same Chromosome number
Different Chromosome number
Diploid Cells
One part to cell division
Two parts to cell division (I and II)
Sex cells
Somatic Cells
Bacteria reproduction
Human reproduction
Mitosis
PART D-CANCER: http://www.pbs.org/wgbh/nova/cancer/grow_flash.html
a. Read each screen then use arrows to click to the next. Answer the questions as you go. What type of cancer is
being shown: _________________________
b. What is angiogenesis? ___________________________________________________
c. What happens when the tumor has a new blood supply? ________________________
d. The lump is first detectable when it is the size of a small ________________
e. What makes most tumors so lethal? ________________________________________
_____________________________________________________________________
f. To form a new colony, a tumor cell must do what? ____________________________
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