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bis_104_ss_i_quiz_1a_key_2008

bis_104_ss_i_quiz_1a_key_2008 - BIS 104 SS I 2008...

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BIS 104 SS I 2008 Name ____________________________________ (last) (first) QUIZ #1 Version A 1. For each of the items listed below, briefly describe its: (8 pts) i) composition and location ii) function or importance a) Rough Endoplasmic reticulum (RER) i) Lipid bilayer membrane with associated ribososmes; continuous with outer layer of nuclear membrane; between nucleus and Golgi complex. ii) Site of synthesis of membrane-associated and/or secretory proteins. Also site of initial processing and quality control surveillance of newly sysnthesized proteins. b) Proteasome
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i) Protein complex mostly in cytoplasm, but some in nucleus. ii) Designed specifically for digestion of proteins marked for degradation. Name ____________________________________ 2. In your research lab you have a microscope with the following features: A 10x mag ocular (eyepiece) lens. A 50x mag objective lens designed for oil immersion with a numerical aperture (NA) of 1.2.
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A lamp providing light with a wavelength of 600 nm. What degree of magnification can be obtained with this scope? (show calculations) (2 pts) (10x) x (50x) = 500x total mag.
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