Answer:
The prefix "echin-" means D. The prefix "exo" means outside/external.
Explanation:
The
molecules which move large molecules into and out of the cell are known as
membrane transport proteins-transporters.
<span>Their
function is to move all the molecules that are not capable to pass via passive
diffusion. So, transporters are involved in the movement of ions, small
molecules, or macromolecules, such as another protein, across a membrane.
Transporters are integral transmembrane proteins and can be categorized as channels
or carriers. These proteins assist in the movement of molecules by facilitated
diffusion or active transport.</span>
Cell theory may not become a law of cells and there are many reasons to prove it and I have 4 reasons why.One is because the scientific community has never accepted cell theory as a law for many years . Another reason is cell theory is only describes the natural world and explains the natural world .My last reason is cell theory does not have enough support to be made into a law. Therefore, cell theory will never become the law of cells. Hope this helps :)
