Download Lab 24 – Mitosis Wheel

Name: __________________________________ Period: ___________ Date: ___________
LAB 3-6: Mitosis Wheel
Lab Minutes = 60
Cells form new cells by a process called cell division or mitosis. During mitosis, one cell divides in half to
form two new cells. Suppose you could watch a cell divide. You could see that the cell parts called
chromosomes move around the cell during mitosis. Because chromosomes move in particular ways, you could
arrange the events of mitosis into several steps. Biologists have been able to arrange the events of mitosis into
several steps. They examined many dividing cells in order to learn the steps. What are the steps of cell
division? In what order do they occur?
Objective: In this exercise, you will:
a. Create a visual aide to understand the steps of mitosis.
b. Compare and contrast between plant and animal cells.
Materials:
2 pieces of different colored construction paper
1 brass fasteners
scissors
glue
diagram handouts
colored pencils
Part 1 - Define the following keywords in Table 1.
Table 1
Chromosomes
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Spindle Fibers
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Centrioles
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Centromere
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Nuclear
Membrane
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Chromatin
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Cell Plate
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Daughter Cells
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Cytokinesis
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Part 2
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Creating a Mitosis Wheel
Refer to Template 1. Cut along the outer circle pattern.
Trace the large circle pattern onto the light colored piece of construction paper.
Transfer the marks on the larger disc onto the outer edge of your circle.
Cut along the inner circle of the pattern piece and trace this onto the darker colored construction paper.
Cut out the window portion of the smaller circle. Start by making a small cut in the middle of the
window and cut straight out to each corner, then trim away the paper inside the window by cutting along
the lines.
Try to center the smaller circle to the larger circle and push a brass fastener through the central point of
the wheel. Bend the prongs of the fastener back behind the larger wheel to keep the wheels together.
Label the stages of mitosis in the middle of each subdivision of the larger disk. The stages of mitosis are
the following: Interphase, Prophase, Metaphase, Anaphase, Telophase and Cytokinesis (daughter cells)
Refer to Template 2. Cut out the pictures of the mitotic stages and glue them into the upper portion of
the window in each stage.
Inside each window write important facts about each stage of mitosis.
Label and decorate the outer circle
Part 3 Analysis and Conclusion Questions:
1. What part is present in plant cells but absent in animal cells?
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2. What happens to the chromosome material during interphase?
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3. In which phase of mitosis is a nucleus visible?
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4. What happens to the chromosome material during prophase?
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5. In which phase of mitosis do you first see fibers?
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6. In which phase of mitosis do the fibers begin to disappear?
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7. What is the role of the spindle fibers?
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8. Doubled chromosomes first become visible in which phase of mitosis and how many doubled chromosomes
are visible in this phase?
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9. What is happening to the doubled chromosomes during Anaphase and Telophase?
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10. How many cells does each dividing cell form?
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11. What forms between the cells after the doubled chromosomes have pulled apart in plant cells?
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12. Match the following by writing the correct letter in the proper blank.
__________Interphase
__________Prophase
__________Metaphase
__________Anaphase
__________ Telophase
a.
b.
c.
d.
e.
Membranes around the nucleus disintegrate
Doubled chromosomes separate
Spindle fibers re-appear and nuclear envelope reforms
DNA replication and nucleus is present
Chromosomes line up in the middle of the cell
Teachers Initial for Completion of the wheel ____________________