Answer: It’s difficult to take up DNA because it’s a hydrophilic molecule that can’t pass through the cell membrane. A competent bacterial cell is one that has been treated with a certain concentration of a divalent cation such as calcium, which boosts the efficiency with which DNA may enter the bacteria through the cell wall pores.
How is the bacterial cell made competent to take up DNA ?
How is the bacterial cell made competent to take up DNA ?