BIOL240 Lecture 6: BIOL 240 - Class 6 Fall 2017
15 Mar 2019
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Sa/v: if we compare rods, the shorter the rod of similar diameter then the greater the sa/v ratio. They trade" their plasmids with other bacterial cells. Inclusion bodies are organelles in bacteria made of various polymers. Nucleoid is where all the chromosomal dna in bacteria are focused/concentrated. Use of cations like mg+2, k+, na+ to negative charges, small +vely charged proteins bind to the chromosomes to maintain condensed structure, topoisomerases (like histone proteins) modify structure of dna to enable supercoiling. Cytoplasm is a stew of trna, rrna, mrna proteins etc. Inclusion bodies and microcompartments may also be present. Bacteria have some membrane bound organelles: sulfur globules sulfur storage for energy hydrogen sulfide is used as a source of energy. It is fed in to the electron transport chain where it undergoes redox reactions to give energy by donating the electrons. The end product is elemental sulfur as seen with stromatolites.
