They contain a mixture of fresh and salt water and are impacted my the oceans
There are two classes of membrane transport proteins—carriers<span> and </span>channels<span>. Both form continuous </span>protein<span> pathways across the lipid bilayer. Whereas transport by </span>carriers<span> can be either active or passive, solute flow through </span>channel proteins<span> is always passive.</span>
Answer:
cell membrane
Explanation:
There are thousands of proteins embedded in the cell's lipid bilayer
