The Cell
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Transcript of The Cell
![Page 1: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/1.jpg)
![Page 2: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/2.jpg)
Cells
![Page 3: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/3.jpg)
Cells• All living things are made of cells
• All cells come from preexisting cells
• Cells are the basic structural and functional unit of life (Cell Theory)
![Page 4: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/4.jpg)
Structure and Function• A cell’s structure (shape and size) is directly related to its function
• Skin cells are “plate like”• Nerve cells are long and branchy
![Page 5: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/5.jpg)
Cell Size• Cells are relatively small because they must maintain a high surface area (cell membrane) to volume (cytoplasm) ratio
• If a cell gets too large it will STARVE
![Page 6: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/6.jpg)
Prokaryotes• Prokaryotes are organisms whose cells lack a “true” nucleus
• These cells are usually small and simple
• Example: Bacteria
![Page 7: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/7.jpg)
Eukaryotes• Eukaryotes are organisms whose cells contain a “true” nucleus
• These cells are usually large and complex
• Examples: Plants, Animals, Fungi, Protists
![Page 8: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/8.jpg)
Plant vs. Animal Cells• Plant cells have:
– A Cell Wall (used for structure)– A Central Vacuole (used to maintain turgor pressure)
– And Chloroplasts (needed for photosynthesis)
![Page 9: The Cell](https://reader035.fdocuments.us/reader035/viewer/2022070317/556431c5d8b42ace308b47b2/html5/thumbnails/9.jpg)
Pulse Check• Now that you know so much about cells, try your hand at illustrating each of the following types of cells:– Prokaryotic– Eukaryotic: Animal and Plant