L05a - NATS1610-fw1718 - Cell Basics.pdf

N even though cells are individual living entities

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n Even though cells are individual living entities, they COLLABORATE their behaviours with other cells in multicelled organisms - Beating Heart Cell n Example showed in class: Beating Heart cells under microscope n n n Sponge Cells “collaborate” to create a new Sponge – (first 1.59 minutes) n Example showed in class: from BBC Documentary - The Cell 1 of 3 The Hidden Kingdom
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15 Cells are pretty smart, too! Cells know what they’re supposed to do, and how to do it n given the right environments & nutrients to trigger their “developmental programmes” n For example, individual neural stem cells can grow, reproduce, & organize themselves to form brains n *** Check out this video about growing “mini-brains” started from some neural stem cells - (14.24 min start 5.50) Some cells in multicelled organisms stay “single” and they go to war and “HUNT DOWN” foreign invaders within the multicelled body they live it n Example showed in class: Neutrophil Chase (David Rogers at Vanderbilt University, 1950) n Example showed in class: Chemotaxis n Here’s how neutrophils “hunt” inside the body - Extravasation of Neutrophils n ***
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16 And then there are the Protozoa In a world all their own. n Example shown in class: 10 Microscopic Creatures n (Crash course, 12.16 min) From Fig. 1.42, From - Molecular Biology of the Cell. 4th ed, Alberts et al., Garland Science. An assortment of protists: a small sample of an extremely diverse class of organisms
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