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Examination_3_Student_Edition.283133311 (1)

Examination_3_Student_Edition.283133311 (1) - Biology...

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Biology, 7e (Campbell) Chapter 6: A Tour of the Cell Chapter Questions 1) What limits the resolving power of a light microscope? A) the type of lens used to magnify the object under study B) the shortest wavelength of light used to illuminate the specimen C) the type of lens that focuses a beam of electrons through the specimen D) the type of heavy metal or dye that is used to stain the specimen E) the ratio of an object's image to its real size Topic: Concept 6.1 Skill: Knowledge 2) When biologists wish to study the internal ultrastructure of cells, they most likely would use A) a light microscope. B) a scanning electron microscope. C) a transmission electronic microscope. D) A and C only E) A, B, and C Topic: Concept 6.1 Skill: Knowledge 3) The advantage of light microscopy over electron microscopy is that A) light microscopy provides for higher magnification than electron microscopy. B) light microscopy provides for higher resolving power than electron microscopy. C) light microscopy allows one to view dynamic processes in living cells. D) both A and B E) both B and C Topic: Concept 6.1 Skill: Knowledge 4) A primary objective of cell fractionation is to A) view the structure of cell membranes. B) identify the enzymes outside the organelles. C) determine the size of various organelles. D) separate the major organelles so their particular functions can be determined. E) crack the cell wall so the cytoplasmic contents can be released. Topic: Concept 6.1 Skill: Knowledge 5) 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 6) 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?
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