Nitrogen (N)
* Proteins: Nitrogen is a key component of amino acids, the building blocks of proteins. It's found in the amine group (-NH2) of each amino acid.
* Nucleic Acids (DNA and RNA): Nitrogen is present in the nitrogenous bases (adenine, guanine, cytosine, thymine, and uracil) that make up the genetic code.
* Some Carbohydrates: While less common, some complex carbohydrates like chitin (found in insect exoskeletons) contain nitrogen.
Phosphates (PO4)
* Nucleic Acids (DNA and RNA): Phosphate groups form the backbone of DNA and RNA, linking the sugar molecules of the nucleotides together.
* Phospholipids: These lipids, found in cell membranes, contain phosphate groups that interact with water, helping to form the membrane's structure.
* ATP (Adenosine Triphosphate): The primary energy currency of cells, ATP has three phosphate groups, which are essential for energy transfer.
* Other Molecules: Phosphate groups are found in many other biologically important molecules, such as sugars, coenzymes, and proteins.
In Summary:
* Nitrogen: Mostly in proteins and nucleic acids, with a smaller role in some carbohydrates.
* Phosphates: Primarily in nucleic acids, phospholipids, and ATP, but also found in other biomolecules.
