Integration Host Factor, IHF, is an architectural protein in E. coli that helps to package the DNA inside the cell as well as to organize the DNA for higher-order nucleoprotein complexes. IHF also binds to specific sites on the DNA that are 35 base-pairs (bps) long and bends that DNA at that site by rad (180). The Young's modulus of DNA is 300 MPa, and its cross-sectional radius is 1 nm. Model DNA as a cylindrical rod. A. What is the bending coefficient of DNA in units of J m? Express your answer in scientific notation (For example 6.02 1023 as 6.02 23.) B. How long is a 35-bp segment of DNA? (Express your answer in nm; assume that the separation between bps is 0.34 nm.) C. Determine the radius of the curvature (in nm) for the DNA in the IHF-bound bent complex. D. Calculate the energy (in multiples of ) required to bend the DNA, where is body temperature (98.6 degrees Fahrenheit).