An ectotherm gets its heat from external sources
(Remember "ecto" means outer, "endo" means inner)
The believe answer for that would be A
It prevents harmful substances from entering a cell
The correct answer is option B, that is, electroporation succeeded by recombination.
A usual method of presenting exogenous nucleic acids into cells is known as electroporation. In this, an electric voltage potential is used through a biological membrane, ultimately resulting in the formation of conducting hydrophilic pores. The process of electroporation is utilized for transporting or transfecting nucleic acids generally DNA within the cells, to make them articulate genes that would modify the genetic mechanism.
The transfected DNA can get recombined or incorporated into the host genome or can remain in its own composition. Thus, the process of electroporation straightforwardly permits more recombination to take place.
