(a) What is a hydrocarbon? (b) Butane is the alkane with a chain of four carbon atoms. Write a structural formula for this compound and determine its molecular and empirical formulas.
Lecture 8/25 DNA & Evolution Thursday, August 25, 2016 10:32 AM Stanley Miller's experimentcreated a system which was supposed to represent molecules in the early earth's atmosphere. After later research, it was found this was not an accurate representation of early earth's atmosphere. Pyrimidine bases- Cytosine, Thymine, Uracil Purine bases- Guanine, Adenine Could DNA been formed early in the developmentof earth Carbons are numbered 1' -5' Key points- DNA has directionality or polarity -OH group on 3' C -Phosphate group on 5'C DNA is anti-parallel Complementarybase pairing -A:T -C:G Are nucleotides hydrophilic or hydrophobic Both Nitrogenous bases are hydrophobic and hydroxl group and phosphate group are hydrophilic Water is a polar moleculesbecause