the purpose of a cell membrane is to
The cell membrane gives the cell its structure and regulates the materials that enter and leave the cell. Like a drawbridge intended to protect a castle and keep out enemies, the cell membrane only allows certain molecules to enter or exit.
The biggest challenge is rejection. Sometimes the human body will not accept the pig organ unfortunately.
Hope this helped. Good luck !

velocity is a vector so it has a magnitude and direction so the answer would be B
Answer:
it is important for the skills to have hole thought the bone because it is used to relieve pressure on the brain when fluid, such as blood builds up and starts to compress bone tissues
<span>There are three parts of the body that will change suggesting a systemic disease. The first is the hands, which contain may blood vessels and a significant amount of skin surface. Nerves in the body might show signs of a systemic disease. Finally, muscles, tendons and ligaments might swell or otherwise show signs of bodily stress.</span>