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Unicellular Organisms

Unicellular Organisms. Lets Start With Cells. Anyone remember what cells are? How about all those organelles that they have? …maybe we should review . The Mighty Cell. These tiny, microscopic things are pretty complex

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Unicellular Organisms

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  1. Unicellular Organisms

  2. Lets Start With Cells • Anyone remember what cells are? • How about all those organelles that they have? • …maybe we should review 

  3. The Mighty Cell • These tiny, microscopic things are pretty complex • They need to be able to carry out all the life processes that we do, but on a microscopic level!

  4. The Mighty Cell • Cells have specialized parts that carry out life functions in the same way that our organs do for us • We call them…organelles!

  5. Its similar to our brain • Regulates and controls all of the happenings inside of the cell • Contains the DNA

  6. The goo: Cytoplasm • This is the goo that everything is suspended in • If things need to get transported, it goes through the cytoplasm (Similar to our blood)

  7. The Barrier; Cell Membrane • Keeps the insides in and the outsides out • Similar function as our skin

  8. The Structure; Cell wall • Similar to the membrane, except it is very rigid and gives it a definite shape • Our skeletal system does kind of the same thing • Cell wall also keeps insides in and outsides out

  9. The Food Factory; Chloroplast • Not all cells have this • Uses energy from the sun and CO2 to make food! • How awesome would it be if we had chloroplasts in our skin?...Think about it…

  10. The Packaging System: Endoplasmic Reticulum • Can create proteins and gets them all ready to go where they need to be • Surrounds the nucleus

  11. The Assembly Worker: Ribosomes • They make proteins • Proteins are essential for all life, with out them we wouldn’t be here…

  12. The Power House; Mitochondria • Converts food into ENERGY!! • ‘The Mighty Mitochondria’ • Kind of the opposite of the chloroplast

  13. The Storage: Vacuole • Acts as a storage place. Can store food or other materials

  14. The Post Office; Golgi Apparatus • Packages and labels materials for shipment

  15. The Stomach; Lysosome • Contains Digestive juices that will break down food

  16. Ok, now that we know about cells… • Lets talk about some single celled organisms!! Unicellular Organisms Bacteria Diatoms Dinoflagellates

  17. Bacteria • Lack a nucleus and other organelles!! OMG THEIR SO SIMPLE! • 3 different shapes • Rod, spiral and round • Reproduce Rapidly!

  18. Bacteria Are Important • Decay Bacteria • Feed on dead things • Recycles nutrients back to the environment • Lots of them found at the bottom of the ocean

  19. Bacteria Are Important • Blue-Green (Cyano)Bacteria • Important Producers • Maybe the first photosynthetic organisms EVER! • Can produce Reef-like structures called stromatolites!

  20. Diatoms • Float near the surface usually (that’s where the light is after all!) • Important marine producers • Come in a wide variety of shapes

  21. Diatoms • Has a nucleus and other organelles • Transparent cell wall lets light in • Has 2 frustules that fit together • Spines and oil filled vacuoles help keep the diatoms floating near the surface

  22. Dinoflagellates • Quite Different! They can MOVE!! • They have 2 flagella that help them do this • An eye spot helps them move towards the light • Some are also bioluminescent

  23. Dinoflagellates • They are photosynthetic, but they can also eat food! • When a lot of them bloom they can cause red tides which can be dangerous for people and wild life

  24. Photosynthesis

  25. Microscope Review • Scanning (red), focus with big knob • Low power (yellow), focus with big knob or small knob • High power; SMALL KNOB ONLY!

  26. Stations • Groups of 5 will rotate from station to station • 1 station is for prepping a slide to look at (pondwater) • You will have 4 minutes for each station • You will sketch what you see on a sheet resembling this;

  27. Diamtoms Dinoflagellates Blue-green bacteria Pond water Critter

  28. Ticket Out; • Create a Concept map for the next chapter (5) • Include all the major topics and subtopics in the map • Homework: • Read the next chapter and take notes • Use connecting words/phrases on your concept map for each connection

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