Receptor-mediated endocytosis differs from other types of endocytosis in that the process does not require the cell to use any energy.

the particle coming into the cell is called a protein receptor.

the process can move particles into the cell or out of the cell.

the particle coming into the cell first binds to a protein on the cell membrane.

In 1996 california legalized the medical use of marijuana, even though it was still illegal under federal law. californians angel raich and diane monson used medical marijuana that they grew on their own property. when federal agents destroyed their plants, monson and raich sued, claiming, among other things, that the commerce clause did not permit the federal government to regulate activities that took place in their back yards and homes. the federal government argued that since consuming locally-grown marijuana for medical purposes affects the interstate market for marijuana, the federal government may regulate—and prohibit—such consumption. whose argument should prevail?

True or false. mucous membranes secrete mucus that traps pathogens.

How much serem is need to make kids?