3. cell wall
The cell wall is a rigid supporting structure.
A complete protein<span> (or whole protein) is a source of protein that </span>contains<span> an adequate proportion of </span>all nine<span> of the </span>essential amino acids<span> necessary for the dietary needs of </span><span>humans.
Answer: C
Hope this Helps! :3
</span>
The building block of nucleic acids are nucleotides. These consist of sugar, a phosphate, and a nitrogenous base.
You need larger amounts of macrominerals. They include calcium, phosphorus, magnesium, sodium, potassium, chloride and sulfur. You only need small amounts of trace minerals.
