3. The amount of in the soil was no longer a limiting factor in crop production after chemists discovered how to produce ammonia artificially in 1910.
A carbon
B. chlorine
c. nitrogen
D. sulfur

After fertilization, which type of cellular division is responsible for the growth and development of a complex, multicellular organism?

Where in the cell are ribosomes made?

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.