Provide the route that one oxygen molecule, 0, will take as it moves from the room air up to its arrival inside the mitochondrion of a cell in a skeletal muscle fiber of the leg. Be detailed, particularly in passing through cell membranes. Write this in flow chart format, using words linked by arrows. Indicate which portion of this moute is considered internal respiration, and which portion is considered external respiration.

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.