BIOLOGY 1113 Lecture Notes - Lecture 30: Capsid, Escherichia Coli, Hydrogen Bond

• School: Ohio State University
• Department: Biology
• Course: BIOLOGY 1113
• Professor: Eric Danhart

Document Summary

All credit goes to freeman biology 6th edition 2017. Chapter 15: dna and the gene: synthesis and repair. Hershey/chase experiments- determined whether genes were made of protein(sulfur s35)/dna(phosphorus p32). Capsid- exterior protein coat of virus particle(encloses genome). If genes consist of dna then radioactive protein should only be found in capsids outside infected cells, but radioactive dna should be inside. T2 infections begin w/ virus attaching to cell wall of e. coli and injecting genes into cell"s interior. Deoxyribonucleotides(monomer) consists of deoxyribose sugar, phosphate group, and a nitrogenous base. Has hydroxyl group on 3", and phosphate group on 5" that join together by covalent linkage(phosphodiester bond). Primary structure consists of sugar/phosphate backbone, and series of bases projecting from backbone. Double helix- secondary structure of dna, two antiparallel strands wound from each other. Base pairing- association b/w nitrogenous bases, stabilized by hydrogen bonding(a-t, g-c). Base pairing, and hydrophobic interactions b/w bases inside helix.