Identify the order of components of the “fluid-mosaic” model of the plasm from outermost to innermost: “fluid-mosaic” model of the plasma membrane of an animal cell, 1. glycocalyx 2. peptidoglycan 3. peripheral proteins 4. hydrophobic phospolipid “tails” 5. polar phospolipid “head groups b. c. d. 1-2-3-4-5; 1-5-4-5-3: 1-4-5-4-3: 5-4-3-2-1. – 13. What is the appearance of the plasma membrane when viewed with TEM? a. It appears as a single dark line: – (b. It appears as two dark lines separated by a lighter area: c. It is basophilic: d. None of the above. It usually cannot be visualized with TEM. 14. Which technique was employed to demonstrate the location of proteins in the plasma membrane? a. freeze-fracture: b. light microscopy:- Maybe c. fluorescence microscopy: d. scanning electron microscopy. 15. Identify the sequence of organelles through which “genetic information flows, from gene to secretion. 1. nucleus 2. rough endoplasmic reticulum (TER) 3. Golgi apparatus 4. secretion vesicle 5. transport vesicle a. b. 1-2-3-4-5: 1-2-3-5-4; 1-2-5-4-3: 1-2-5-3-4. o 16. The intermediate filament type that forms the nuclear lamina is: a. – keratin; b. actin: C. lamin: d. collagen 17. Microfilaments consist of: a. keratin; (b. actin; c. – lamin; d. collagen
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