CHEM 1100 Lecture Notes - Lecture 22: European Corn Borer, Insecticide, Deoxyribose
Document Summary
Cell biology: cells--the smallest unit of life. Molecular biology: biological molecules (lipids, proteins, nucleic acids, carbohydrates) Genetically modified to produce it"s own pesticide. Cells have a complete set of instructions. Called the genome: all dna in an individual. Carries out specific rxns, chemicals, or events in the cell. Bacillus thuringiensis has genes to make insecticidal proteins. Take a gene from the bacteria put in the corn corn makes insecticide. Each gene conveys 1 or more hereditary traits. Dna strand in humans unwound = sun and back 60 times. Special template written in molecular code on a tightly coiled thread = a chromosome. X-ray diffraction: bounce x-rays off dna crystal. 10 base pairs = 3. 4 nm (1 complete turn!!!) Base composition: same for all members of a species. Ex: humans---31% a, 31% t, 19% g, 19% c. ^^^ chargaff"s rule: % a = % t, %g = %c. 2 molecules of dna pair up double helix.
