ECON 1 Lecture Notes - Lecture 32: Ionic Bonding, Eukaryote, Guanine
Document Summary
Observations suggest that all living things on earth have a common ancestor, geological and biochemical findings support a time line for this evolutionary path: Based on findings, the organisms of modern world can be divided into 3 fundamental groups, called domains: eukarya comprises all multicellular organisms, including human beings, as well as many microscopic unicellular organisms, such as yeast. Defining characteristic of domain: the presence of a well-defined nucleus within each cell: bacteria prokaryotes, archaea prokaryotes, but differ from bacteria. All cellular organisms use dna for storing their genetic information. Structure of dna: dna is a linear polymer, made up of 4 different types of monomers. Each monomer consist of three parts: a sugar part (deoxyribose), a phosphate part and a base. Each sugar is connected to two phosphate groups. There are four different bases: adenine (a), cytosine (c), guanine (g) and thymine (t).
