MICROBIO 310 Lecture Notes - Lecture 6: Growth Medium, Mutation, Glycosidic Bond
16 Oct 2017
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Document Summary
Two replication forks moving in opposite directions. Dna pol iii adds 1,000 nucleotides per second. Mutation rates in cells are 10^8 to 10^11 errors per base inserted. Recognized by sigma factor of rna polymerase. Transcription stops at specific sites called transcription terminators. Allows cell to transcribe different genes at different rates. These genes are transcribed all at once as a single mrna. Growth: increase in the number of cells. Generation time: time required for microbial cells to double in number. During cell division, each daughter cell receives a chromosome and sufficient copies of all other cell constituents to exist as an independent cell. Dna replicates before the ftsz ring forms. Location of ftsz ring is facilitated by min proteins. Prokaryotes contain a cell cytoskeleton that is dynamic and multifaceted. Crescentin: shape-determining protein produced by vibrio-shaped cells of . Production of new cell wall material is a major feature of cell division.
