7.012: Introductory Biology-Fall 2004 Instructors: Professor Eric Lander, Professor Robert A. Weinberg, Dr. Claudette Gardel Big Idea 1: Biology is based on observational and experimental science. 1. We think what we think because we can draw conclusions from the results of controlled experiments. 2. An informative experiment is designed to distinguish between hypotheses
Notes LECTURE Biochemistry 9.17.04 ATP is both a unit of energy currency in a cell and a building block of RNA. Why? It is believed that early in evolution there were very few molecules around. Many key pathways are ancient, and trace their origin to the early stages of evolution of life on Earth. Incidentally, such pathways are usually highly conserved in modern organisms. This is probably because once