Suppose you found a molecule a, which had a molecular mass of 1500 daltons, was able to penetrate the channels of a gap junction, but molecule b whose molecular mass was only 1200 daltons, was unable to diffuse between the same cells. how might these molecules be different so as to explain these results?

One of the newest applications of cell technology is called cybrid embryos. this process involves replacing the nuclear material of an animal cell with human nuclear material. how might this process affect public policies about research by using stem cells? the same policies and concerns about the use of human embryonic stem cells would most likely apply. the embryos would most likely be treated like traditional animal embryos and regulated accordingly. the process of forming cybrid embryos would most likely be banned by government regulators. the embryos would be treated as regular cells because they are not fully human in origin.