Quiz%201-09_MasterCopy

Quiz%201-09_MasterCopy - 2. The most electronegative atoms...

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Test: Quiz 1-09 Creation Date: 9/1/2009 Group Type: Randomize groups Penalty for guessing: 0 PCB3134 - Quiz 1 Fall 2009 DIRECTIONS 1. Enter your last name & initials and UFID# on your answer sheet, BOTH PRINTED & FILL IN THE BUBBLES . (The section number may be ommited) 2. Enter the five-digit test code number in the slots 76-80 of your answer sheet. 1. Why do electron microscopes provide much greater resolving power than light microscopes? (1) because more electrical power is involved in running an electron microscope (*) because electron wavelength is much shorter than that of visible light (3) because electron wavelength is much longer than that of visible light (4) because the numerical aperture is much larger in electron microscopes (5) because the numerical aperture is much smaller in electron microscopes
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Unformatted text preview: 2. The most electronegative atoms typically present in biological molecules are ____ and ____. (1) O, C (2) O, P (*) O, N (4) C, N (5) C, Na 3. In a living organism, where are weak ionic bonds most likely to be found? (1) in the cytoplasm (2) between DNA strands (*) deep in a protein's core where water is excluded (4) on the surface of a protein (5) on the surface of a lipid 4. We can add ________ to increase the value of [H + ][OH-] in a water solution. (1) acid (2) base (3) more water (4) salt such as NaCl (*) No, we cannot change the value of [H + ][OH-] in a water solution. VERIFY THAT YOU HAVE FOLLOWED THE DIRECTION IN ENTERING (1) THE TEST CODE NUMBER, (2) YOUR NAME & INITIALS, AND (3) YOUR UFID# TO THE ANSWER SHEET. Grade will be posted by UFID numbers on the web page....
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This note was uploaded on 09/20/2009 for the course PCB 3134 taught by Professor Multiple during the Spring '08 term at University of Florida.

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Quiz%201-09_MasterCopy - 2. The most electronegative atoms...

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