NAME:____________________________________________DATE:_________ HOUR:____
MITOSIS INTERNET ACTIVITY
Internet Activity #1
www.cellsalive.com
On the left hand of the screen is a navigation bar, click on the link to “MITOSIS”. Read the text on
this page and view the animation. You can slow down the video by clicking step by step through the
phases.
Which stage does the following occur:
1.
Chromatin condenses into chromosomes
__________________________________
2.
Chromosomes align in the center of the cell __________________________________
3.
Longest part of the cell cycle
__________________________________
4.
Nuclear envelope breaks down
__________________________________
5.
Cell is cleaved into two new daughter cells __________________________________
6.
Daughter chromosomes arrive at the poles
__________________________________
Watch the video carefully. The colored chromosomes represent chromatids. There are two of
each color because one is an exact duplicate of the other.
7.
How many chromosomes are visible at the beginning of mitosis?
8.
How many chromosomes are in each daughter cell at the end of mitosis? _____________
9.
What are the little green “T” shaped objects in the cell?
10.
What happens to the centrioles during mitosis?
11.
Identify the stages of these cells.
A. _____________________
______________
_________________________
_______________________________
B._______________________
C. _____________________
Internet Activity #2
http://media.pearsoncmg.com/bc/bc_campbell_biology_7/media/interactivemedia/activities/load.htm
l?12&C
Read the description and watch the animation on each of the 10 pages. Use headphones or mute
your computer
1. Cell division consists of two processes: _____________ and _______________.
2. Mitosis— division of the ___________________ and its chromosomes
3. Mitosis is followed by cytokinesis, when the ___________________ splits to form two
separate daughter cells
Click Next on the upper right side of the screen and watch the animation. (page 2 of 10)
Click Next again. (page 3 of 10)
1. During prophase, the nucleoli disappear and chromatin fibers coil up to become discrete
______________________. Each chromosome consists of two identical sister
________________, joined at the centromere.
Click Next 3 times (page 6 of 10)
1. Anaphase begins when the two centromeres of each chromosome come _______________,
separating the _________________ __________________. Once separate, each sister
chromatid is considered a full-fledged daughter chromosome.
Click Next again (page 7 of 10)
1. During telophase, ______________ ________________ form around the identical sets of
chromosomes at the two poles of the cell. The chromosomes uncoil and nucleoli appear in the
two new nuclei. Meanwhile, _______________________ begins, splitting the cytoplasm and
separating the two daughter cells.
Click Next again (page 8 of 10)
1. In animal cells, cytokinesis begins with the formation of a _______________
_________________. At the site of the furrow, a ring of microfilaments contracts, much like
the pulling of drawstrings. The cell is pinched in two, creating two _____________________
daughter cells.
Click Next again (page 9 of 10)
1. In plant cells, cytokinesis begins when vesicles containing cell-wall material collect in the
middle of the cell. The vesicles fuse, forming a large sac called the ____________
______________.
Click Next again (page 10 of 10)
1. Complete the activity, then complete the chart below
2. Write the correct order of the cell cycle. (You do not need to include Prometaphase)
(Prophase, Interphase, Anaphase, Cytokinesis, Metaphase, Telophase)
a. ____________________________________________
b. ____________________________________________
c. ____________________________________________
d. ____________________________________________
e. ____________________________________________
f. ____________________________________________
Internet Activity #3
www.johnkyrk.com/mitosis.html
View the animation and sketch the animation in the following phase.
Prophase
Metaphase
Telophase
Internet Activity #4
www.biology.arizona.edu/cell_bio/activities/cell_cycle/cell_cycle.html
Read the information on the first few introduction web pages. Answer the following questions.
20.
Explain why the roots of plants are a ideal for studying the cell cycle.
21.
List the five major phases of the life cycle of a cell.
Click on the NEXT button each time you complete the readings. You will have 36 cells to
classify. When you’re finished, record your data in the chart below. Round to whole numbers.
Interphase
Prophase
Metaphase
Anaphase
Telophase
Number of
Cells
Percent of
Cells
** Percent of cells = (Number of cells in the phase/ Number of total cells) X 100
Total