Goal: Understand How Cells Divide by Mitosis
New Words: chromosome, chromatin, centromere, chromatid, centrosome
Do Now:
List 3 things you have learned about the Cell Cycle
Goal: Understand How Cells Divide by Mitosis
New Words: chromosome, chromatin, centromere, chromatid, centrosome
Centromere
DNA / Chromatin
DNA
1. Label chromosome, chromatin, and DNA on the picture.
2. Label centromere and chromatid on the chromosomes.
3. How are chromatids and chromosomes similar and different?
4. How many chromosomes do human cells contain?
and carrot cells?
and fruit flies?
Cromatids
Chromosome
Goal: Understand How Cells Divide by Mitosis
New Words: chromosome, chromatin, centromere, chromatid, spindle fiber
5. Label in the pictures
Nucleus
Nuclear membrane Spindle fiber
Chromatids
Centromere
Chromatin
Spindle fiber
Chromatids
Chromosomes
Chromosomes
Centrosome or Centriole
Centrosomes
Nuclear membrane
Spindle fiber
Chromosome
Nucleus/
Chromatin
Centromere
Centrosome
Goal: Understand How Cells Divide by Mitosis
New Words: mitosis, prophase, metaphase, anaphase, telophase
Mitosis animation. Excellent.
http://www.johnkyrk.com/mitosis.html
Mitosis / meiosis animation
http://www.pbs.org/wgbh/nova/baby/divi_flash.html
Mitosis movies
http://www.bio.unc.edu/faculty/salmon/lab/mitosis/mitosismovies.html
Meiosis and mitosis interactive
http://www.biologyinmotion.com/cell_division/index.html
How cells divide
http://highered.mcgrawhill.com/sites/0072437316/student_view0/chapter11/animations.html#
Goal: Understand How Cells Divide by Mitosis
New Words: mitosis, prophase, metaphase, anaphase, telophase
5. Label the pictures with the cell division phases: interphase, prophase, metaphase, anaphase,
telophase, cytokinesis
Anaphase
Cytokinesis
Telophase
Metaphase
Interphase
Prophase
Goal: Understand How Cells Divide by Mitosis
New Words: mitosis, prophase, metaphase, anaphase, telophase
Do Now:
Arrange the following events of cell division in order from 1 to 5
• DNA unwinds and two nuclei form _________________
• Chromosomes line up in the middle of the nucleus _____
• Chromatid moves to opposite end of the cell __________
• Nuclear membrane dissolves ______________________
• Cell splits with its own set of chromosomes ___________
Goal: Understand How Cells Divide by Mitosis
New Words: chromosome, chromatin, centromere, chromatid
Events
Cell Cycle Phase
one-half of each chromosome (chromatid) moves to
opposite end of the cell
anaphase
Chromosomes are replicated
interphase
spindle fibers pull chromosomes apart
anaphase
nuclear membrane dissolves
prophase
increasing cell size and grow
interphase
Production of many organelles and molecules
interphase
Cell splits with its own set of chromosomes
cytokinesis
chromosomes line up in the middle of the nucleus
attaching spindle fibers from each new daughter cell
pole to each chromosome at the centromere
wind DNA ( chromatin) into chromosomes
metaphase
Nuclear membrane forms
DNA unwinds and two nuclei form
metaphase
prophase
telophase
telophase
Goal: Understand How Cells Divide by Mitosis
New Words: mitosis, prophase, metaphase, anaphase, telophase
• Increasing cell size and grow
Interphase
• Chromosomes are replicated
• Production of many organelles and molecules
• Nuclear membrane dissolves
Prophase
• Wind DNA ( chromatin) into chromosomes
• Chromosomes line up in the middle of the nucleus
Metaphase
Anaphase
• Attaching spindle fibers from each new daughter
cell pole to each chromosome at the centromere
• One-half of each chromosome (chromatid)
moves to opposite end of the cell
• Spindle fibers pull chromosomes apart
• Nuclear membrane forms
Telophase
• DNA unwinds and two nuclei form