1 / 27

Cell Structure & Function

Learn about cell theory, the smallest unit of life capable of performing life functions, and the different types of cells found in living organisms. Explore the structure and function of cell organelles, such as the cell membrane, nucleus, chromosomes, DNA, cytoplasm, endoplasmic reticulum, ribosomes, mitochondria, Golgi bodies, lysosomes, and vacuoles. Discover how cells reproduce through processes like binary fission, conjugation, mitosis, and meiosis.

webbchris
Télécharger la présentation

Cell Structure & Function

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cell Structure & Function http://koning.ecsu.ctstateu.edu/cell/cell.html

  2. Cell Theory • All living things are made up of cells. • Cells are the smallest working units of all living things. • All cells come from preexisting cells through cell division.

  3. Definition of Cell A cell is the smallest unit that is capable of performing life functions.

  4. Examples of Cells Amoeba Proteus Plant Stem Bacteria Red Blood Cell Nerve Cell

  5. Two Types of Cells Does not have a nucleus Prokaryotic – Eukaryotic - Does have a nucleus https://www.youtube.com/watch?v=HBvfBB_oSTc

  6. Prokaryotic • Do not have structures surrounded by membranes • Few internal structures • One-celled organisms, Bacteria http://library.thinkquest.org/C004535/prokaryotic_cells.html

  7. Eukaryotic • Contain organelles surrounded by membranes • Most living organisms Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html

  8. “Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif

  9. “Typical” Plant Cell http://waynesword.palomar.edu/images/plant3.gif

  10. Cell Parts Organelles, which are: Little organs, the organs of a cell

  11. Cell Membrane • Outer membrane of cell that controls movement in and out of the cell • Double layer http://library.thinkquest.org/12413/structures.html

  12. Nucleus • Cells control center or brain • Contains genetic material – DNA • Contains the nucleolus

  13. Nucleolus • Inside nucleus • Contains RNA to build proteins http://library.thinkquest.org/12413/structures.html

  14. Chromosomes • In nucleus • Made of DNA • Contain instructions for traits & characteristics http://library.thinkquest.org/12413/structures.html

  15. DNA • Deoxyribonucleic acid • Contains coded information that passes on every single inherited characteristic http://library.thinkquest.org/12413/structures.html

  16. Cytoplasm • Jelly-like fluid between cell membrane and nucleus where most of the organelles are found

  17. Endoplasmic Reticulum • Tubes that move and store materials • Smooth type: lacks ribosomes • Rough type (pictured): ribosomes embedded in surface http://library.thinkquest.org/12413/structures.html

  18. Ribosomes • Each cell contains thousands • Protein producing factories • Proteins produce chemical messages that run a cell http://library.thinkquest.org/12413/structures.html

  19. Mitochondrian • Produces energy for cell to use by breaking down substances http://library.thinkquest.org/12413/structures.html

  20. Golgi Bodies • Protein 'packaging plant' • Move materials within the cell • Move materials out of the cell http://library.thinkquest.org/12413/structures.html

  21. Lysosome • Where digestion of cell nutrients takes place • Cell breaks down if lysosome explodes http://library.thinkquest.org/12413/structures.html

  22. Vacuoles • Storage area for fat and other substances http://library.thinkquest.org/12413/structures.html

  23. Reproduction

  24. Cell Reproduction Summary Prokaryotic Cell Reproduction • Binary Fission • Conjugation Eukaryotic Cell Reproduction (reproduction of the nucleus) • Mitosis • Meiosis • After mitosis and meiosis occur then the cell itself divides and this is called cytokinesis http://library.thinkquest.org/12413/structures.html

  25. Mitosis • The division of eukaryotic cells • The goal of mitosis is to produce two cells that are genetically identical to the parent cell, meaning the new cells have exactly the same DNA as the parent cell. Fore example, mitosis happens when you grow. http://library.thinkquest.org/12413/structures.html

  26. Meiosis • The division of eukaryotic cells • The goal of meiosis is to produce sperm or eggs cells, also known as gametes. The resulting gametes are NOT genetically identical to the parent cell. The new cells have only half of the parent cell’s This is necessary so that when a sperm and an egg combine at fertilization, the resulting zygote has the correct amount of DNA. The zygote then begins to divide through mitosis. http://library.thinkquest.org/12413/structures.html

  27. THE END

More Related