Consider the following mechanism for the formation of a double helix from its strands A and B: A+Bk1k1unstablehelixfastreversible unstablehelixk2stabledoublehelixslow. a) Derive a rate equation for the formation of a double helix assuming Step 1 is fast and reversible. b) Derive a rate equation for the formation of a double helix using the steady state approximation to find the concentration of the unstable helix