carries


Key terms Structure of RNA DNA alone cannot account for the expression of genes. RNA is needed to help carry out the instructions in DNA. Like DNA, RNA is made up of nucleotide consisting of a 5-carbon sugar ribose, a phosphate group, and a nitrogenous base. However, there are three main differences between DNA and RNA:



Question: Assume a long straight wire of a circular cross-section (radius a) carries a steady current I. The current I is uniformly distributed across this cross-section. (a) Compare the dependence of the magnetic flux density B with respect to r in the region r < a and r > a, where r is the radial distance from the center of the circular cross-section of the wi