BIO 311D Study Guide - Midterm Guide: Pi Bond, Sigma Bond, Unpaired Electron
Document Summary
Alain viel: in your everyday life, you are surrounded by living organisms, non-living things. In this video, you"ll discover that inert and living matters are, in fact, not distinguished by the chemical elements they contain but by the relative abundance of these elements and the connection they make with each other. This periodic table shows a smaller number of elements labeled in green. These are the major components of living organisms. They are combined to form a large number of biomolecules that vary both in structure and complexity. The elements labeled in yellow are present in trace amounts in living organisms but still have vital roles that will be discussed in later videos. As you can see on this table, carbon, oxygen, hydrogen, nitrogen make up 95% of the weight of a human body. Carbon by itself represents 50% of dessicated living matter. In contrast, in earth"s crust, carbon, hydrogen, and nitrogen are present in low or trace amounts.
