Download Mitosis and Cytokinesis Snap beads Instruction sheet

Lab: Cell Cycle Modeling Lab
Instructions
Using snap beads make:
2 chains of 7 red beads
2 chains of 5 red beads
2 chains of 7 yellow beads
2 chains of 5 yellow beads
1.
Title a piece of paper Cell Cycle Modeling Lab. Write your name in the top right corner. When drawing each stage
of the cell cycle include color.
2.
Form chromosomes by connecting 2 chains of 7 red beads with a centromere (pipe cleaner). Repeat with the other
2 red chains.
3.
Repeat step 2 with the yellow beads. You should now have 4 chromosomes total, 2 red chromosomes and 2 yellow
chromosomes
4.
Use 2 long pieces of string to make the parent cell membrane and 2 shorter pieces of string to make the nuclear
membrane.
5.
Model the Cell Cycle. Use the following instructions and your notes to help you.
6.
Arrange the chromosomes in the center and use the string to make the nuclear membrane and cell membrane of the
parent cell. This is Interphase. Draw Interphase. Label: interphase, chromosome, chromatid, centromere, cell
membrane, nuclear membrane. Write at least 1 sentence explaining what happens in this stage of the cell cycle.
7.
Remove the nucleus. This is Prophase. Spindle fibers appear in this stage. For this lab the spindle fibers are
imaginary. Draw prophase. Label: Prophase, chromosome, spindle fibers, centrioles. Write at least 1 sentence
explaining what happens in this stage of the cell cycle.
8.
Line up the chromosomes in the center (equator) of the cell. This is metaphase. Draw metaphase. Include spindle
fibers attaching to the chromatids. Label: metaphase, equator, spindle fibers. Write at least 1 sentence explaining
what happens in this stage of the cell cycle.
9.
Separate chromatids toward the centrioles at either end (pole) of the cell. This is anaphase. Draw anaphase.
Label: anaphase, centrioles, chromatids. Write at least 1 sentence explaining what happens in this stage of the cell
cycle.
10. Slightly pinch the middle of the cell to represent the start of cytokinesis during telophase. Place strings to
represent the nuclei forming in each new cell. Draw telophase. Label: telophase, chromosomes, nuclear membrane,
centrioles. Write at least 1 sentence explaining what happens in this stage of the cell cycle.
11. Create two new cells to represent cytokinesis. Draw cytokinesis. Label: cytokinesis, both nuclei, chromatin. Write
at least 1 sentence explaining what happens in this stage of the cell cycle.
12. Practice the stages of the cell cycle (interphase, mitosis, cytokinesis) until you can do it and name it without looking
at notes or the book.
13. Demonstrate that you can do this to the teacher and get 10 points. Turn in your drawings.
Include these words in your sketches and demonstration quiz:
Chromosomes
Chromatids
Centromeres
Cell membrane
Nuclear membrane
Spindle fibers
Centrioles
Equator
Poles
Prophase
Metaphase
Anaphase
Telophase
Mitosis
Cytokinesis