1. Slides 1 to 102
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

2. The Cell Life Cycle Cell division—The reproduction of cells
Apoptosis—Genetically programmed death of cells
Mitosis—The nuclear division of somatic cells
Meiosis—The nuclear division of sex cells
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

3. The Cell Life Cycle
The Cell Life Cycle
Figure 3-20

4. The Cell Life Cycle
DNA Replication
Figure 3-21

5. Cell Diversity and Differentiation
Somatic Cells
All have same genes
Some genes inactivate during development
Cells thus become functionally specialized
Specialized cells form distinct tissues
Tissue cells become differentiated
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

6. The Cell Life Cycle Key Note
Mitosis is the separation of duplicated chromosomes into two identical sets and nuclei in the process of somatic cell division.
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

7. The Cell Life Cycle
Mitosis—A process that separates and encloses the duplicated chromosomes of the original cell into two identical nuclei
Use to duplicate somatic cells
Four phases in mitosis
Prophase
Metaphase
Anaphase
Telophase
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

8. The Cell Life Cycle Cytokinesis
Division of the cytoplasm to form two identical daughter cells
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

9. The Cell Life Cycle Mitotic Phases Prophase Metaphase Anaphase
Chromosomes condense
Chromatids connect at centromeres
Metaphase
Chromatid pairs align at metaphase plate
Anaphase
Daughter chromosomes separate
Telophase
Nuclear envelopes reform
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

10. Nucleus Spindle fibers Mitosis begins Chromosome with two
Interphase
Early prophase
Late prophase
Nucleus
Spindle
fibers
Mitosis
begins
Chromosome
with two
sister chromatids
Centrioles
(two pairs)
Centromeres
Metaphase
Anaphase
Telophase
Separation
Daughter
chromosomes
Cytokinesis
Metaphase
plate
Cleavage
furrow
Daughter
cells
Figure 3-22
1 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

11. Nucleus Figure 3-22 2 of 8 Interphase
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

12. Spindle fibers Mitosis begins Centrioles (two pairs)
Interphase
Early prophase
Nucleus
Spindle
fibers
Mitosis
begins
Centrioles
(two pairs)
Figure 3-22
3 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

13. Nucleus Spindle fibers Mitosis begins Chromosome with two
Interphase
Early prophase
Late prophase
Nucleus
Spindle
fibers
Mitosis
begins
Chromosome
with two
sister chromatids
Centrioles
(two pairs)
Centromeres
Figure 3-22
4 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

14. Nucleus Spindle fibers Mitosis begins Chromosome with two
Interphase
Early prophase
Late prophase
Nucleus
Spindle
fibers
Mitosis
begins
Chromosome
with two
sister chromatids
Centrioles
(two pairs)
Centromeres
Metaphase
Metaphase
plate
Figure 3-22
5 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

15. Nucleus Spindle fibers Mitosis begins Chromosome with two
Interphase
Early prophase
Late prophase
Nucleus
Spindle
fibers
Mitosis
begins
Chromosome
with two
sister chromatids
Centrioles
(two pairs)
Centromeres
Metaphase
Anaphase
Daughter
chromosomes
Metaphase
plate
Figure 3-22
6 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

16. Nucleus Spindle fibers Mitosis begins Chromosome with two
Interphase
Early prophase
Late prophase
Nucleus
Spindle
fibers
Mitosis
begins
Chromosome
with two
sister chromatids
Centrioles
(two pairs)
Centromeres
Metaphase
Anaphase
Telophase
Daughter
chromosomes
Metaphase
plate
Cleavage
furrow
Figure 3-22
7 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

17. Nucleus Spindle fibers Mitosis begins Chromosome with two
Interphase
Early prophase
Late prophase
Nucleus
Spindle
fibers
Mitosis
begins
Chromosome
with two
sister chromatids
Centrioles
(two pairs)
Centromeres
Metaphase
Anaphase
Telophase
Separation
Daughter
chromosomes
Cytokinesis
Metaphase
plate
Cleavage
furrow
Daughter
cells
Figure 3-22
8 of 8
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

18. The Cell Life Cycle Key Note
Cancer results from mutations that disrupt the control mechanism that regulates cell growth and division. Cancers most often begin where cells are dividing rapidly, because the more chromosomes are copied, the greater the chances of error.
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

19. The Cell Life Cycle Cell Division and Cancer Abnormal cell growth
Tumors (also called, neoplasm)
Benign
Encapsulated
Malignant
Invasion
Metastasis
Cancer—Disease that results from a malignant tumor
Copyright © 2007 Pearson Education, Inc., publishing as Benjamin Cummings

20. Coloring Workbook
The packet will be due the day before the test. You can now complete numbers 14 and 15.