The primary function of the plasma membrane is to protect the cell from its surroundings. Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
<span>First - carhydrates are composed by Carbon, Hydrogen and Oxygen. Carbohydrates often suffer reactions of reduction, oxdation, amination, esterification, which gives every structur a specific property such as solubility. Now, fats are composed by several fatty acids and form mono, digli and triglicerids. This last ones are formed by Carbon, Hydrogen and Oxygen with a (-COOH) structure at the extremity. Protein, formed by linear aminoacids chains. Irs structure is determined by the aminoacids sequence. Now, steroids are derivated from the sterane, composed by Cabron and Hydrogen forming 4 merged rings, 3 hexagonals and 1 pentagonal.</span>
The development of a rash on the genitals or the oral cavity, cold sores are also fairly common.
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Answer is the first choice - form non-metals</span>. Some acid and metal reactions don't form anything especially with weak acids. But many acids react with metals to form salt and hydrogen, which are considered non-metals.
I think there is more than one possible answer but I'd say the answer is ion because an atom that loses an electron becomes a positive ion<span />