The plasma membrane is considered a barrier to the environment because no molecules may pass through it it controls the passage of molecules into the cell it is located outside of the cell wall only water and small molecules may penetrate the membrane

What element does susan b. anthony include in this passage to strengthen her argument?

Which food could be transported in a galvanized metal container?

The human genome project is devoted to mapping the general dna sequence of our species. this could lead to the development of new medicines, as well as the possibility of using gene therapy to treat certain diseases. however, there are some ethical issues surrounding the mapping of individual genomes. one concern is a) that your genes may change over time, making the project useless. b) that insurance companies could discriminate based on genetic make-up. c) that since this has never been done before, we should probably not do it now. d) that sequencing our individual genomes is so expensive, it is a counter-productive strategy.