Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism.
Biology is the study of living organisms and life processes that provides in-depth scientific knowledge, of the structure, behavior, origin, growth and reproduction process in life. It helps in understanding the natural processes of environment and ecosystems, understand the body from the medical point of view which is essential in identifying diseases, developing cures etc. It lays an important foundation for the fields such as zoology, ecology, molecular biology, genetics, aerobiology, bioinformatics and biomedical research. Knowledge of biology is essential in professional careers such as teacher, researcher, scientist, doctor, chemist, pharmacist, nurse, lab technician, environmentalist, medical and dental assistant, dentist, chiropractor and a myriad other professions.