7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of...
-
Upload
nancy-webb -
Category
Documents
-
view
280 -
download
3
Transcript of 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of...
![Page 1: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/1.jpg)
7-4 the diversity of cellular life
![Page 2: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/2.jpg)
Unicellular organisms
Unicellular organisms perform all of life’s essential functions within a single cell.
There are far more unicellular life forms than multicellular ones.
Yeast cell
![Page 3: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/3.jpg)
Multicellular organisms
Cell specialization: Cells develop in different
ways to perform different tasks for the whole organism.
Cells communicate and cooperate with each other
Copepod (1mm)
P/S: why do cells of a multicellular organismneed to communicate?
volvox
![Page 4: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/4.jpg)
Specialized cells Red blood cells:
transport O2
Pancreatic cells: produce enzymes to digest food.
Guard cells open & close the stomata to exchange gases and water in plants.
Islet cells:pancreas
![Page 5: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/5.jpg)
Levels of organization
Within an organism are 4 levels of organization 1. cell 2. tissue 3. organ 4. organ system
WB: what level of organization is our brain?
![Page 6: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/6.jpg)
Tissue
• A group of similar cells that perform a particular function.
Animal tissues:epithelial, nervous, muscle, & connective
![Page 7: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/7.jpg)
Organs
Made of groups of different tissues to perform a specific function for the body
ex: heart, lung, stomach, liver
Heart
lungsPS: discuss the functions of the organs listedhere
liver
![Page 8: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/8.jpg)
Organ system
A group of organs working together to perform a specific function.
Specialization and interdependence is one of the remarkable attributes of living things.
WB: which organs are found in the digestive system?
![Page 9: 7-4 the diversity of cellular life. Unicellular organisms Unicellular organisms perform all of life’s essential functions within a single cell. There.](https://reader033.fdocuments.in/reader033/viewer/2022061504/56649ec95503460f94bd72af/html5/thumbnails/9.jpg)
Summary
Today’s topic was……………… A tissue is ……………………… Cells specialize because………… Cells cooperate because……….
Onion tissue