BIOL 255L Lecture Notes - Lecture 2: Potentiometer, Golgi Apparatus, Centrosome
11 Sep 2016
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3 ways to regulate lighting your specimen: adjust the condenser, open or close the diaphragm, turn on substage light and use rheostat to adjust light intensity. Supposed to hold on to it during transport. Centrosome organizes microtubules; participates in spindle formation during cell divison. Used to raise and lower the stage (controls focus) Explain why you should only use the coarse focus using. Because using it at a higher objective could bring the the lowest power objective slide too close to the objective lens, scratching the lens. Golgi apparatus prepares and packages cellular products for exocytosis. Lysosome has enzymes that break down materials brought to the cell; releases enzymes out of cell to digest. Mechanical stage and control allows for precise moving of slide into field of view. Microvilli increase surface area of plasma membrane for absorption and secretion. Produces atp during cellular respiration where the objective lens is attached. Has dna and rna; regulates protein synthesis and cell division.
