CHE 107 Lecture Notes - Lecture 15: Dna Profiling, Cell Nucleus, Human Body

• School: Pace University
• Department: Chemistry
• Course: CHE 107
• Professor: Richardson

Document Summary

All living things are made of cells: cells are the basic unit of life. Human body is composed of trillions of cells. Biological evidence: any object collected at crime scene that contains cell/tissue samples. When collecting biological samples, it"s best to collect entire surface on which: it"s important to use breathable container to store it b/c biological samples stored in air tight containers are more susceptible to moisture & mold damage. White blood cells contain dna housed in a nucleus: mature red blood cells do not, lack of nucleus allows mature red blood cells more space to carry oxygen & more flexibility to fit through blood vessels. Most of cell"s hereditary info is encoded by genome & stored in cell nucleus. A portion is also located in mitochondria. Genome: sum of all genes present in a cell & composed of strands of macromolecules called nucleic acids: specifically composed of deoxyribonucleic acid (dna).