Credit: Kateryna Kon/Science Photo Library/ What is DNA, and how does it work? You don't need a degree in genetics to understand. Here, we'll give an overview of DNA and answer questions ...

DNA consists of two strands, that wind around each other. Each strand has repeating units of a nitrogenous base, deoxyribose sugar, and a phosphate group.

Understanding where and in what quantities essential elements for life have existed on Earth's surface helps explain the ...

Arsenic is chemically similar to phosphorus, which has a large presence in biomolecules in the form of phosphate (PO 4 3-). That’s partly why arsenic is so toxic.

Phosphorus-containing compounds, known as phosphates, provide the molecular backbone for DNA and RNA molecules. Adenosine triphosphate, or ATP, serves as the source of energy for living cells.