1. The molecular weight of BSA is 35,000 g/mol. You have a 2% solution of BSA. You want to make 0.25 mg/ml of BSA, and you need 1 mL of this diluted solution. How much BSA and how much water will you use?
2. Assume that the histone octamer forms a cylinder 9 nm in diameter and 5 nm in height and that the human genome forms 32 million nucleosomes. What volume of the nucleus is occupied by histone octamers?