BIOL 1406 Chapter Notes -Matthias Jakob Schleiden, Theodor Schwann, Bright-Field Microscopy

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11 May 2022
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Matthias schleiden stated, plants are made of cells . Theodor schwann stated, animal tissues is also made up of cells . All living things are made of up of 1+ cells. Cells are the smallest basic unit of life/organization. Even if larger cells, they have adaptive mechanisms. Small cells have more surface area per unit of volume= more control. Bright field microscope= cells to be fixed not alive. Differential interference= shows contrast of specimen by reflective gradients. Scanning electron= negative electrons knocked out of surface. Encased within a cell wall --made up of peptigolycan=carbs. Resistance of a bacteria is due to structure of cell wall. Archae vs bacteria, achea can have saturated hydrocarbon (archae most closely related to eukaryotes) Flagella: protein fibers, can sum up to 70 cell length, rotates like screws, gets the energy to move thru energy gradients. Hallmark of eukaryote cell is compartmentalization

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