Notes: Mitosis (pg 8)
Notes: Mitosis (pg 8)
• Mitosis: a body cell divides to form two
“daughter cells,” each identical to the parent
cell
• Nec...
1. Interphase
Period between cell divisions. Cell grows,
metabolizes, and makes a copy of its DNA. The
DNA is in long slen...
2. Prophase
DNA condenses into chromosomes, spindle
fibers form, nuclear membrane disappears
3. Metaphase
Chromosomes align themselves along the
center of the cell
4. Anaphase
Spindle fibers shorten, pulling half the
chromosomes toward one side of the cell and
half toward the other
5. Telophase&Cytokinesis
New nuclear membrane forms, spindle fibers
disappear, chromosomes start to uncoil.
Cytokinesis = ...
• Drawings
The Biology of Cancer
The Biology of Cancer
• Cancer = uncontrolled cell division
The Biology of Cancer (pg 12)
• Cancer = uncontrolled cell division
• Normally, cells undergo mitosis only when
necessary ...
The Biology of Cancer (pg 12)
• Cancer = uncontrolled cell division
• Normally, cells undergo mitosis only when
necessary ...
The Biology of Cancer (pg 12)
• Cancer = uncontrolled cell division
• Normally, cells undergo mitosis only when
necessary ...
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Mitosis notes

  1. 1. Notes: Mitosis (pg 8)
  2. 2. Notes: Mitosis (pg 8) • Mitosis: a body cell divides to form two “daughter cells,” each identical to the parent cell • Necessary for body growth, repair, and maintenance • Takes place in 5 steps
  3. 3. 1. Interphase Period between cell divisions. Cell grows, metabolizes, and makes a copy of its DNA. The DNA is in long slender strands (chromatin).
  4. 4. 2. Prophase DNA condenses into chromosomes, spindle fibers form, nuclear membrane disappears
  5. 5. 3. Metaphase Chromosomes align themselves along the center of the cell
  6. 6. 4. Anaphase Spindle fibers shorten, pulling half the chromosomes toward one side of the cell and half toward the other
  7. 7. 5. Telophase&Cytokinesis New nuclear membrane forms, spindle fibers disappear, chromosomes start to uncoil. Cytokinesis = division of cell cytoplasm. Cell is pinched in half, creating two separate cells.
  8. 8. • Drawings
  9. 9. The Biology of Cancer
  10. 10. The Biology of Cancer • Cancer = uncontrolled cell division
  11. 11. The Biology of Cancer (pg 12) • Cancer = uncontrolled cell division • Normally, cells undergo mitosis only when necessary (to replace old cells, during growth, etc.)
  12. 12. The Biology of Cancer (pg 12) • Cancer = uncontrolled cell division • Normally, cells undergo mitosis only when necessary (to replace old cells, during growth, etc.) • In cancer, cells divide constantly, forming a large mass (tumor) that disrupts other organs
  13. 13. The Biology of Cancer (pg 12) • Cancer = uncontrolled cell division • Normally, cells undergo mitosis only when necessary (to replace old cells, during growth, etc.) • In cancer, cells divide constantly, forming a large mass (tumor) that disrupts other organs • Caused by mutations in “checkpoint” genes that prevent cells from dividing

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