Which sentence best describes a cell that is isotonic for a substance?

the concentration of the solute is lower inside the cell membrane.
the solute is absent from both sides of the cell membrane.
the solute concentration is equal on both sides of the cell membrane.
the concentration of the solute is higher inside the cell membrane.

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.

Explain how the political influence of african americans leaders became weaker.

The tubes transporting minerals and water upward are called ?