Presentation 1 cell structure and function
-
Upload
mdolsanpra -
Category
Technology
-
view
7.797 -
download
7
Transcript of Presentation 1 cell structure and function
![Page 1: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/1.jpg)
Cell Structure and Function
![Page 2: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/2.jpg)
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.
![Page 3: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/3.jpg)
Definition of Cell
A cell is the smallest unit that is capable of performing life
functions.
![Page 4: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/4.jpg)
Examples of Cells
Amoeba Proteus
Plant Stem
Red Blood Cell
Nerve Cell
Bacteria
![Page 5: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/5.jpg)
Two Types of Cells
•Prokaryotic
•Eukaryotic
![Page 6: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/6.jpg)
Prokaryotic cell• Do not have
internal structures surrounded by membranes
• Few internal structures
• One-celled organisms, Bacteria
![Page 7: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/7.jpg)
Prokaryotic cell
![Page 8: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/8.jpg)
Eukaryotic cells
Plant cellAnimal cell
• Contain organelles surrounded by membranes• Most living organisms
![Page 9: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/9.jpg)
Eukaryotic cellsPlant cells (onion cells)
Animal cell (Amoeba)
![Page 10: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/10.jpg)
Organelles
![Page 11: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/11.jpg)
Cell Membrane
• Outer membrane of cell that controls movement in and out of the cell
• Double layer
http://library.thinkquest.org/12413/structures.html
![Page 12: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/12.jpg)
Cell Wall
• Most commonly found in plant cells & bacteria
• Supports & protects cells
![Page 13: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/13.jpg)
Nucleus
• Directs cell activities
• Separated from cytoplasm by nuclear membrane
• Contains genetic material - DNA
![Page 14: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/14.jpg)
Nucleus
![Page 15: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/15.jpg)
Cytoplasm
• Gel-like mixture
• Surrounded by cell membrane
• Contains all the organelles
• In it, all the chemical reactions occur.
![Page 16: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/16.jpg)
Ribosomes• Each cell contains thousands• Make proteins• Found on rough endoplasmic reticulum & floating
throughout the cell
![Page 17: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/17.jpg)
Endoplasmic reticulum• Moves
materials around in cell:
• Lipids and carbohydrates in smooth type
• Proteins in rough type
![Page 18: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/18.jpg)
Golgi apparatus
• Protein 'packaging plant'• Move materials within the cell and out
of the cell by using vesicles
![Page 19: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/19.jpg)
RE and Golgi apparatus
![Page 20: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/20.jpg)
Vacuole
• Membrane-bound sacs for storage, digestion, and waste removal
• Help plants maintain shape
![Page 21: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/21.jpg)
Lysosome
• Contains digestive enzymes for proteins, fats, and carbohydrates
• Transports undigested material to cell membrane for removal
• Cell breaks down if lysosome explodes
![Page 22: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/22.jpg)
Mitochondrion
• Produces energy through chemical reactions – breaking down fats & carbohydrate
![Page 23: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/23.jpg)
Chloroplast
• Contains green chlorophyll
• Where photosynthesis takes place
![Page 24: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/24.jpg)
Centrioles
•Lead cromosomes movement during cell division
•Control flagella and cilia vibration
![Page 25: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/25.jpg)
Cytoskeleton
•Support organelles and cell shape and place a role in cell motion
![Page 26: Presentation 1 cell structure and function](https://reader035.fdocuments.us/reader035/viewer/2022062300/55494b99b4c90566498b460d/html5/thumbnails/26.jpg)
Flagellum and cillia
Help cell move