By the end of this lab, you will see how some materials diffuse through a semipermeable membrane but others do not. the materials that you examine will differ in molecule size. some will be larger and some smaller. formulate an investigative question for this situation
a free enterprise economy has five important characteristics. they are: economic freedom, voluntary (willing) exchange, private property rights, the profit motive, and competition.
i hope this < 3
all the cells in a person's body have the same dna and the same genes. however, the difference between cells in different tissues and organs is that the "expression" of the genes differs between cells. expression means that the message from the dna is being copied and made into protein.
statements a, c are true statments. hope this !