Explain why cells have semi-permeable membranes. What are semi-permeable membranes, what do they help maintain, and what cell organelle helps regulate this?

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

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.

What is the average speed of a car that traveled 300.0 miles in 5.5 hours