Progress in Biology

Progress in biology during the 20th Century

•  1900 – 1910

 Power of experimentation was demonstrated

•  1928

 Anti –bacterial agent was discovered (penicillin)

•  Gregor Mendel – Mendel’s Law of Heredity 

•  X – Ray crystallography- Method of determining the arrangement of an atom within the crystal. 

Other discoveries

• structure and functions of DNA(Deoxyribonucleic acid ,is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms with the exception of some viruses. The main role of DNA molecules is the long-term storage of information. DNA is often compared to a set of blueprint, like a recipe or a code, since it contains the instructions needed to construct other components of cells such as proteins and RNA molecules).

•  the structure or part of DNA, double helix

• Structure and functions of proteins. (insulin, hemoglobin, antibodies)

• discovery of essential nutrients.

1. Macro nutrients

          Carbohydrates

          Proteins

          Fats (fat soluble vitamin and water soluble in vitamin

      2. Micro nutrients

           Vitamins

          Minerals

          Water