This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Nucleotides. Each nucleic acid contains many building blocks called nucleotides The nucleotides have distinctive structure composed of three components that held together by covalent bond nitrogencontaining base cytosine thymine acenine guanine carbon sugar ribose or deoxyribose phosphate group en Adrignola CommonsHelper Calibuon