Answer:
Transport proteins function in both active and passive transport to move molecules across the plasma membrane. ... These channel proteins are responsible for bringing in ions and other small molecules into the cell. It's important to remember that each channel protein can only bring in a specific molecule.
Explanation:
The placenta, because it carry's all the nutrients from the mother to the baby
have most of the same symptoms as others with this disorder
Promote it by saving animals and garrentkng them.