The correct answer of the given question above would be PROTEIN. The macromolecule that is involved in nearly every function in the human body is the protein. I<span>f there is a shortage of carbohydrates or lipids, proteins can serve as an energy source. It is also essential in building muscle mass. Hope this answer helps.</span>
The correct option for above statement is:
c.cell membrane
The cytomembrane (plasma membrane) could be a skinny semi-permeable membrane that surrounds the protoplasm of a cell. Its operate is to shield the integrity of the inside of the cell by permitting sure substances into the cell, whereas keeping different substances out. It conjointly is a base of attachment for the complex body part in some organisms and therefore the cell membrane in others. So the cytomembrane conjointly serves facilitate support the cell and help maintain its form.
I believe non-polar but I may be wrong