BIOLOGY 1A03 Lecture Notes - Lecture 4: Rubber Band, Dna Supercoil, Antimicrobial Resistance

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Dr.Da Silva

Document Summary

In prokaryotic cells, the majority of dna is contained in the nucleoid. There are also smaller circular dna molecules called plasmids. These plasmids often carry only one or two genes. Plasmids can replicate independently of the core genome and can be transferred from one cell to another. Take a rubber band and apply rotation at one end of the band. 1: streptococcal bacteria are normal inhabitants of the human upper respiratory tract, benign strains are harmless and not associated with any disease symptoms. To test this, he killed the virulent strain and incubated the remains with living cells of the benign strain. In 1944, oswald avery and his colleagues looked at the work of griffith and decided to ask another question. Which molecule was carrying the hereditary information: there are 5 macromolecules in the cell that could be considered: lipids, carbs, protein, rna, and.