Practice exam 1

Practice exam 1 - NAME:_ TF:_ Biological Sciences 54 EXAM 1...

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NAME: ___________________________________ 2006 TF: ________________________________________ Biological Sciences 54 EXAM 1 A. Be sure to write your name on the top of each of page of the examination. B. Write each answer only on the same page as the pertinent question. THE SPACE PROVIDED IS MEANT TO BE SUFFICIENT If absolutely necessary, use the back of that page to continue the answer. C. IF YOUR ANSWER CANNOT BE READ IT CANNOT BE GRADED. D. Remember, if you do not show your reasoning, you cannot get partial credit. E. The point value for each question is noted. ALLOCATE YOUR TIME WISELY. F. Read carefully, think before you write, good luck, and do well! page 2: __________ (25 pts) page 3: __________ (25 pts) page 4: __________ (25 pts) page 5: __________ (25 pts) TOTAL: _______ (100 pts)
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Name ___________________________________ TF ___________________________ page 2 1. (15 pts) Microscopy is an essential tool in cell biology and provides us with astounding images of the world that we could not otherwise imagine. Figure 1 was obtained using transmission electron microscopy. Figure 2 was obtained using phase contrast microscopy. (1) (2) A) Explain the essential differences between scanning and transmission EM with respect to sample preparation and the resulting images. B) Provide one example of the advantages and one example of the disadvantages of using electron microscopy compared with phase contrast microscopy. 2. (10 pts)
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This note was uploaded on 04/07/2008 for the course MCB 54 taught by Professor Lue during the Fall '06 term at Harvard.

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Practice exam 1 - NAME:_ TF:_ Biological Sciences 54 EXAM 1...

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