Homework1 - BMEn 2501/5501 Cellular and Molecular Biology...

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BMEn 2501/5501 Cellular and Molecular Biology for Biomedical Engineers Fall 2006 Ungraded Homework #1 1) If a nucleus is considered a sphere of radius 3 μm embedded in a spherical cell of radius 12 μm, what percentage of the volume of the cell is occupied by the nucleus? 2) The cytoskeletal protein actin is present in the cell at roughly 100 μM concentration in the cell. How many molecules are present in a spherical cell of radius 4μm? 3) If a metabolite is at a concentration of 1 μM, how many molecules are there in a 1 μm 3 volume (on average)? Given a 1 μM concentration, how many molecules total are there in a spherical animal cell of diameter 10 μm? Given a 1 μM concentration, how many molecules total are there in a spherical bacterial cell of diameter 1 μm? 4) Using the data provided on the webct site in the file marked vdw.txt, try to develop a mathematical equation for the vdW potential we discussed in class, U(x), that best fits the data. There are 4 columns. Column 1 is the inter-atomic separation, x.
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Homework1 - BMEn 2501/5501 Cellular and Molecular Biology...

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