17. What is the primary function of the cell membrane?
A. It separates the intracellular components from the extracellular space and
allows transport of materials into and out of the cell.
B. It provides rigidity and protects the cell from its environment.
C. It packages and transports proteins and lipids for transport to designated
locations in the cell.
D. It digests foreign materials and unwanted organelles in the cytoplasm.
E. It provides storage space for food or water.

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.