The model shows how pimples are formed in the skin. Why do you think this process can occasionally lead to pain? A. The swollen pimple completely stops blood flow to the area, starving the nerves. B. The bacteria replication leads to swelling, which irritates nerves in the dermis.
C. The nerves around the pore cannot transmit an action potential, so they can’t send signals.
D. The pimple presses on the epidermis, which is where all the sensory receptors in the skin are located.

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.