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Question: Eukaryotic cells package their DNA by wrapping short stretches of it around the rims of disk- shaped proteins called histones. Typically, a 150 base-pair segment of DNA (0.34 nm/base-pair) wraps itself 1.7 times around the histone core. DNA's persistence length is 53 nm and recall that persistence length is equal to the flexural rigidity (ke) divided by KbT.
Question 1) What is the radius of curvature of the DNA?
Question 2) What is the bending energy (in units of kBT) associated with this deformation?
Match the detector or detectors that can be used in gas chromatography for the detection of the following list of analytes by dragging the detector into the box to the left of the analyte.
compute the enthalpy change, (Delta H), for this reaction per mole of A. suppose that the specific heat =[4.18J/(g*Degrees C) and density=1.00(g/mL)?
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship.
A hypothetical metal has a simple cubic unit cell with the edge length of 4.123 Å. Calculate the radius of the metal atom.
Question- Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing indium and cadmium: In(s)|In^3+ (aq)||Cd^2+ (aq)|Cd(s)
A sample of commercial hydrogen peroxide solution was analyzed using the procedure in this experiment. the results from three determinations were 3.03% ,2.89% and 3.22%
Knowing that 32.4 mL of base were required to reach the end point with a sample of 1.95 g of acid, calculate the molar mass of the acid.
Given that the initial rate constant is 0.0130s^-1 at an initial temperature of 20 degree celcius , what would the rate constant be at a temperature of 100 degree celcius
A 1.00L Solution contains 3.50x10^-4 M Cu(NO3)2 and 2.20x10^-3M ethylenediamine(en). The kf for Cu(en)2^2+ is 1x10^20. What is the concentration of Cu2+(aq) in the solution
an ecell consists of a ag electrode in contact with 346 ml of 0.1 m silver nitrate solution and a mg electrode in
1. As mentioned before, our asteroid is in the shape of a sphere and has a mass of 1000 kilograms. Determine the density (in grams per cubic centimeter) of this asteroid if its diameter is known to be 1.2 meters. Useful information: 1 kg = 1000 g, 1 ..
propane, C3H8, is common fuel used for cooking and home heating. What mass of O2 is consumed in the combustion of 1.00g of propane. I am having a hard time getting the balanced equation for this to solve the rest
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