About this contents

This page represents an online version of “a comprehensive approach to Life Science” textbook in English. The textbook was originally written in Japanese, as a printed version, for Japanese students at the University of Tokyo. This online textbook is constructed for foreign students and Japanese students who would like to study life science in English. This online version features many full color illustrations and a built-in English-Japanese dictionary for further understanding.List of Authors


The 21st century is known as the age of life science. “What is life?” is a concept that we humans have continued to question since the dawn of mankind. Approximately 2300 years ago, Aristotle provided a number of concrete opinions on “What is life?” in his articles. However, for a long time, the deductive understanding of life has been beset with difficulties.

The discovery of the "double helix structure" by Watson and Crick in 1953 revealed the genetic substance and the mechanisms of gene replication and opened a path for the emergence of modern life science. It became possible to understand life using the phrases and terms used in the fields of physics and chemistry ...