1a) Given 37 ul of a 100 mg/ml stock solution of BSA, diagram the most accurate procedure so you end up with at least 500 ul each of 5 ug/ul, 0.5 ug/ul, and 0.05 ug/ul working solutions of BSA.1b) Using the BSA working solutions created above, how much and which concentration would you pipet into three different centrifuge tubes so you end up with 20 ug, 2 ug, and 0.2 ug of BSA?