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Gram-positive bacteria

Biology Lecture on Prokaryotes

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Biology
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Biology
microbiology
bacteria
Archaea
Prokaryote
cell
Microorganism
Gram-positive bacteria
Peptidoglycan
Biofilm
Eukaryote
metabolism
health

+ Biology 10504 Chapter 27: Bacteria and Archaea + About me 2 Bachelors? degree: Concordia College in Minnesota Ph.D. in Biomedical Science: University of California, San Diego Moved to Fort Worth Jan 2010. Stayed in sunny San Diego for postdoctoral fellowship studying Anthrax. + Upper level courses I teach General Microbiology (BIOL 30303) 2 hr lecture + 3 hr lab (spring) Medical Microbiolgy (BIOL 40303) 3 hr lecture (Fall) + iClicker Questions I am taking BIOL 10504 because A)? I?m pre-med B)? I?m interested in another pre-health profession (pre-vet, pre-dental, etc.) C)? I?m interested in going to graduate school in Biology D)? I just like Biology and wanted to learn more about it E)? None of the above 4 +

chapter 27 notes

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Biology
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Biology
microbiology
Bacteriology
organelles
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Membrane biology
Archaea
cell
Prokaryote
Peptidoglycan
Gram-positive bacteria
Eukaryote
health

Chapter 27- bacteria and archaea Hypotonic hypertonic Lysis Mycoplasmas- bacteria that lack cell walls Gram positive bacteria- cell walls made of peptidoglycan Penicillin works on gram positive bacteria by preventing the synthesis of peptidoglycan Cell wall layers are: outermost is capsule, then lipopolysaccharide, then peptidoglycan, then phospholipids Cell wall is source of endotoxin Gram negative bacyeria- outer membrane with toxic lipopolysaccharides Plasmolysis- loss of water due to osmosis causes cytoplasm to pull away from cell wall Occurs in environments with high sugar content DNA should be located in the following to avoid cell death by adverse conditions, such as freezing, drying, or high temp: Nucleoid, endospore, plasmid

chapter 26 notes

Subject: 
Biology
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Biology
microbiology
bacteria
Archaea
cell
Endosymbiont
Prokaryote
Eukaryote
organism
evolution
Peptidoglycan
Gram-positive bacteria
health

Chapter 26 Rooted Tree- has an ancestor common to all organisms on the tree Kingdom, phylum, class, order, family, genus, species Node- spot where a common ancestor exists of branches coming off of it Phylocode method of classification- naming based on similarities Homoplasy- a trait (genetic, morphological etc.) that is shared by two or more taxa because of convergent evolution i.e. 4 chambered heart in mammals and birds Clade- a group consisting of an ancestor and all its descendants, a single "branch" Cladistics- grouped together based on whether or not they have one or more shared unique characteristics that come from the group's last common ancestor and are not present in more distant ancestors
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