Answer:
Explanation: In facilitated diffusion, molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers. A concentration gradient exists for these molecules, so they have the potential to diffuse into or out of, the cell by moving down it.
"To liberate conquered allies" is the one among the following choices given in the question that was the <span>purpose of the Allies' invading Italy and France. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer has come to your help.</span>
DNA themselves discovered DNA
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The molecule now known as DNA was first identified in the 1860s by a Swiss chemist called <span>Johann Friedrich Miescher</span>
Answer:
Function: Cell signalling; Location: Cell membranes
Explanation:
Receptors are usually trans-membrane proteins located on cell membranes. Their extracellular part transmits chemical signals from outside the cell into the intracellular where a response is induced.
