BIO 1107 Exam 2 - Practice Exam#2 BIOL 1107 Dr DerVartanian...

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Practice Exam #2 Name___________________________________ BIOL 1107 - Dr. DerVartanian Spring 2008 1) The advantage of light microscopy over electron microscopy is that A) light microscopy provides for higher magnification than electron microscopy. B) light microscopy allows one to view dynamic processes in living cells. C) light microscopy provides for higher resolving power than electron microscopy. D) both A and B E) both B and C 1) 2) In the fractionation of homogenized cells using centrifugation, the primary factor that determines whether a specific cellular component ends up in the supernatant or the pellet is A) the presence or absence of lipids in the component. B) the percentage of carbohydrates in the component. C) the number of enzymes in the fraction. D) the size and weight of the component. E) the relative solubility of the component. 2) 3) Which of the following correctly lists the order in which cellular components will be found in the pellet when homogenized cells are treated with increasingly rapid spins in a centrifuge? 3) 4) Which of the following are prokaryotic cells? 4) 5) Under which of the following conditions would you expect to find a cell with a predominance of free ribosomes? 5) 1
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