C. A higher amount of addictive chemicals are needed to get the same high when fewer receptors are present...
<span>The correct answer is that its primary function is to connect, support and anchor various parts of the body. It can either connect bones, or it can connect muscles. It also ensures that they don't move in an unexpected manner and that your bones don't randomly fall out of sockets. It's very useful and you couldn't move without it.</span>
<span>the molecule that carries the instruction for producing mRN is DNA</span>
