The document discusses cell growth and reproduction, including asexual and sexual reproduction. It defines key terms like growth, reproduction, asexual reproduction, and sexual reproduction. It provides examples of asexual reproduction through binary fission in prokaryotes like bacteria. It also discusses examples of sexual reproduction through mitosis in eukaryotic cells like plants, animals and humans. The document explains the process of binary fission and mitosis at a high level.

1. Mr. Nettles Biology I: Cell Growth and Reproduction (Part 1)

2. Today’s Objectives I will define: growth , reproduction , asexual reproduction , and sexual reproduction . I will explore an example of asexual reproduction. I will explore an example of sexual reproduction

3. Agenda – Wed., Sept. 21, 2011 Warm-Up Lesson Wrap-Up Research (The Cell Cycle)

4. Warm-Up (Review) Which group of biomolecules is responsible for making and storing energy ? A normal cell swells when placed in a mystery solution . Is that mystery solution hypotonic or hypertonic? I am an organelle only present in animal cell. I transfer chromosomes during cellular reproduction. What am I?

5. Reproduction – making new cells or organisms from older cells or organisms Growth – how an organism increases in size and complexity copyright cmassengale

6. How do Prokaryotes grow and reproduce?

7. Prokaryotes Review: Lack a nucleus Have a single chromosome Reproduce by binary fission Includes bacteria copyright cmassengale

8. Asexual Reproduction Reproduction that involves only one parent cell or organism. Binary Fission is an example of asexual reproduction. copyright cmassengale

9. Asexual Reproduction Short Film

10. Steps in Binary Fission Used by bacteria (prokaryotes) Cells increase in size a little DNA & cell parts are copied Each cell divides into 2 daughter cells copyright cmassengale

11. Binary Fission of Bacterial Cell copyright cmassengale

12. How do We (Eukaryotes) grow and reproduce?

13. Review Eukaryotes: Contain a nucleus & membrane bound organelles Reproduce cells by mitosis Includes plants, animals, and people copyright cmassengale

14. Sexual Reproduction Reproduction that involves two parent cells or organisms. Mitosis is an example of sexual reproduction. copyright cmassengale

15. Sexual Reproduction Short Film

16. How many cells do we begin with?

17. 2

18. How do we get more?

19. Mitosis Mitosis: 1 cell splits into 2 identical cells Then 4, then 8, then 16…

20. Mitosis Mitosis is like dividing in half. Mitosis has 1 cell division.

21. Mitosis The cells produced by mitosis are identical to the parent cells.

22. Mitosis Body cells divide by mitosis for growth and repair.

23. Wrap-Up What is the difference between asexual and sexual reproduction? Binary Fission is an example of _________ reproduction. Define Growth.

24. Research: The Cell Cycle Choose one of the following stages of the cell cycle: G1 phase, S phase, G2 phase, M phase, or Cytokinesis. Use the internet to research information about the stage that you have chosen. Write four interesting things about what you read: What is it? (The definition) What happens? How long does it happen? What’s used? (What special cell parts or organelles are involved)