BIO SCI 97 Lecture Notes - Lecture 8: Hfr Cell, Pilus, Transposable Element
11 Sep 2017
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Clicker question: b) lof is recessive; gof is dominant. Bacterial is a haploid organism with a circular chromosome. Mother haploid 2 daughter haploid cells. Ex) escherichia coli (bacteria) -- located in the gut. Harmless bacterial cells outnumber our own cells 10:1. We have more bacteria in our body than functional cells. No b/c bacteria are haploid meaning there"s no dominant or recessive. Since they are haploid, having a lof allele immediately makes them have no function, not recessive/dominant. Does not have a lot of dna/rna, has some protein. Do not have their own ribosomes -- rely on host ribosomes. Antibiotic -- substance that kills/halts the growth of micro-organism (usually bacteria) Made by other micro-organisms (fungi, bacteria, etc) B/c or else it won"t be useful for us if we take them. Bacteria and humans share many core processes. Differences: bacteria has a peptidoglycan cell wall and we don"t. The best antibiotics target completely different structures within us.
