Cell structure and functions

1,429 views

Published on

Published in: Education, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,429
On SlideShare
0
From Embeds
0
Number of Embeds
6
Actions
Shares
0
Downloads
21
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Cell structure and functions

  1. 1. Cell Structure & Function http://koning.ecsu.ctstateu.edu/cell/cell.html
  2. 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. 3. ROBERT HOOKE •CORK ROWS OF EMPTY COMPARTMENTS RESMBLING HONEYCOMB-
  4. 4. TIMELINE •ANTON VAN LEEUWENHOEK •-ANIMALCULES IN RAINWATER
  5. 5. JEAN BAPTISTE •CELLS ARE FILLED WITH FLUIDS
  6. 6. ROBERT BROWN • CELL NUCLEUS
  7. 7. DUJARDIN •SARCODE- SUBSTANCE INSIDE THE CELL
  8. 8. JOHANNES PURKINJE’ •DISCOVERED PROTOPLASM
  9. 9. DUTROCHET •CELL IS FUNDAMNTAL PART OF THE LIVING ORGANISM
  10. 10. MATTHIAS SCHLEIDEN AND THEODORE SCHWANN •CELL PERFORMS FUNDAMENTAL FUNCTION IN LIVING ORGANISM
  11. 11. RUDOLF VIRCHOW •CELLS DIVIDE TO FORM NEW CELLS
  12. 12. Definition of Cell A cell is the smallest unit that is capable of performing life functions.
  13. 13. Examples of Cells Amoeba Proteus Plant Stem Red Blood Cell Nerve Cell Bacteria
  14. 14. Two Types of Cells •Prokaryotic •Eukaryotic
  15. 15. Prokaryotic • Do not have structures surrounded by membranes • Few internal structures • One-celled organisms, Bacteria http://library.thinkquest.org/C004535/prokaryotic_cells.html
  16. 16. Eukaryotic • Contain organelles surrounded by membranes • Most living organisms Plant Animal http://library.thinkquest.org/C004535/eukaryotic_cells.html
  17. 17. “Typical” Animal Cell http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif
  18. 18. http://waynesword.palomar.edu/images/plant3.gif “Typical” Plant Cell
  19. 19. Cell Parts Organelles
  20. 20. Surrounding the Cell
  21. 21. Cell Membrane • Outer membrane of cell that controls movement in and out of the cell • Double layer http://library.thinkquest.org/12413/structures.html
  22. 22. Cell Wall • Most commonly found in plant cells & bacteria • Supports & protects cells http://library.thinkquest.org/12413/structures.html
  23. 23. Inside the Cell
  24. 24. Nucleus • Directs cell activities • Separated from cytoplasm by nuclear membrane • Contains genetic material - DNA
  25. 25. Nuclear Membrane • Surrounds nucleus • Made of two layers • Openings allow material to enter and leave nucleus http://library.thinkquest.org/12413/structures.html
  26. 26. Chromosomes • In nucleus • Made of DNA • Contain instructions for traits & characteristics http://library.thinkquest.org/12413/structures.html
  27. 27. Nucleolus • Inside nucleus • Contains RNA to build proteins http://library.thinkquest.org/12413/structures.html
  28. 28. Cytoplasm • Gel-like mixture • Surrounded by cell membrane • Contains hereditary material
  29. 29. Endoplasmic Reticulum • Moves materials around in cell • Smooth type: lacks ribosomes • Rough type (pictured): ribosomes embedded in surface http://library.thinkquest.org/12413/structures.html
  30. 30. Ribosomes • Each cell contains thousands • Make proteins • Found on ribosomes & floating throughout the cell http://library.thinkquest.org/12413/structures.html
  31. 31. Mitochondria • Produces energy through chemical reactions – breaking down fats & carbohydrates • Controls level of water and other materials in cell • Recycles and decomposes proteins, fats, and carbohydrates http://library.thinkquest.org/12413/structures.html
  32. 32. Golgi Bodies • Protein 'packaging plant' • Move materials within the cell • Move materials out of the cell http://library.thinkquest.org/12413/structures.html
  33. 33. Lysosome • Digestive 'plant' for proteins, fats, and carbohydrates • Transports undigested material to cell membrane for removal • Cell breaks down if lysosome explodes http://library.thinkquest.org/12413/structures.html
  34. 34. Vacuoles • Membrane-bound sacs for storage, digestion, and waste removal • Contains water solution • Help plants maintain shape http://library.thinkquest.org/12413/structures.html
  35. 35. Chloroplast • Usually found in plant cells • Contains green chlorophyll • Where photosynthesis takes place http://library.thinkquest.org/12413/structures.html

×