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Unformatted text preview: B dark-field light microscopy C phase-contrast microscopy D scanning electron microscopy E electron tomography These cells have . . . 6 A a thin peptidoglycan layer B a thick peptidoglycan layer C a waxy coating D positive surface charges Why would you use a negative stain? 7 A To stain positive cells. B To tell the difference between two cell types. C To stain very small structures. D To visualize external structures that are difficult to stain. 8/27/2007 4:24:13 PM MicroLect4 Page 3 Answer Key : Question: Answer MicroLect4 B 1 C 2 D 3 B 4 A 5 B 6 D 7 8/27/2007 4:24:13 PM...
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- Fall '10