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- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/02%3A_Classifying_Pathogens_and_Hosts/2.02%3A_Brief_descriptions_of_Microbial_PathogensAcellular pathogens: prions and viruses -abnormally folded cellular proteins ( abbreviated “PrP’s”=Prion Proteins) -prion diseases in animals (examples): -prion diseases in humans (examples): -variant...Acellular pathogens: prions and viruses -abnormally folded cellular proteins ( abbreviated “PrP’s”=Prion Proteins) -prion diseases in animals (examples): -prion diseases in humans (examples): -variant vCJD (from ingestion of BSE/Mad Cow prions) Viruses: “trouble wrapped in protein” (see fig 18.4 p 472 in Belk’s Biology) smallpox/variola virus, influenza virus, herpes virus, HIV/Human Immunodeficiency Virus, West Nile virus, Ebola virus Fig 1: virus examples a=”naked” virus b=enveloped virus
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/05%3A_Introduction_to_Bacterial_Cell_Structure_and_Antibiotics/5.03%3A_Bacterial_Cell_Walls-If a compartment (for example a cell) has a higher solute concentration than its environment (outside of cell), the water concentration inside the cell will be less than outside the cell. The peptido...-If a compartment (for example a cell) has a higher solute concentration than its environment (outside of cell), the water concentration inside the cell will be less than outside the cell. The peptidoglycan of the cell wall prevents osmotic lysis when water moves into the cell, but ONLY if the cell wall peptidoglycan is cross-linked. aa\ aa /-> aa \-> aa/ aa aa aa aa
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_PlaguesThe New Plagues is a non-biology majors, infectious disease course inspired by Laurie Garrett’s The Coming Plague: Newly Emerging Diseases in a World Out of Balance (1994). The course is taught for th...The New Plagues is a non-biology majors, infectious disease course inspired by Laurie Garrett’s The Coming Plague: Newly Emerging Diseases in a World Out of Balance (1994). The course is taught for the general public and we usually have a delightful mixture of folks in the class. Hopefully The New Plagues will help you, your family and friends, avoid “encounters of the most unpleasant kind” with our microbial neighbors.
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/05%3A_Introduction_to_Bacterial_Cell_Structure_and_Antibiotics/5.0E%3A_5.E%3A_ExercisesConsequently the peptidoglycan is weakened, the cell wall weakens causing the bacterium to break open in a process called “osmotic lysis” (osmosis= movement of water; lysis= breaking open- the bacteri...Consequently the peptidoglycan is weakened, the cell wall weakens causing the bacterium to break open in a process called “osmotic lysis” (osmosis= movement of water; lysis= breaking open- the bacterium breaks open as water moves into it, much like a water balloon explodes when it is filled with too much water))
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/02%3A_Classifying_Pathogens_and_HostsSkills to Develop Helps us predict behavior of the pathogen Helps us choose correct drugs with which to treat pathogen infections Contributors Karen Carberry-Goh, D.V.M., Ph.D. (Sacramento City Colleg...Skills to Develop Helps us predict behavior of the pathogen Helps us choose correct drugs with which to treat pathogen infections Contributors Karen Carberry-Goh, D.V.M., Ph.D. (Sacramento City College)
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/02%3A_Classifying_Pathogens_and_Hosts/2.05%3A_Influenza
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/08%3A_Microbes_in_the_News
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/07%3A_Host_Defenses/7.02%3A__Nonspecific_DefensesFeature This feature does ... What are the benefits of this feature? When you use this feature, you gain ... When to use this feature? Use this feature to ...
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/02%3A_Classifying_Pathogens_and_Hosts/2.03%3A_Cellular_pathogens_and_hosts-_prokaryotes_and_eukaryotesIn Belk’s Biology, see the “Tree of Life” fig 2.19 on page 47 which illustrates how all cellular organisms evolved from common ancestral prokaryotic organisms. This common ancestry explains the unity ...In Belk’s Biology, see the “Tree of Life” fig 2.19 on page 47 which illustrates how all cellular organisms evolved from common ancestral prokaryotic organisms. This common ancestry explains the unity of life (why all cellular organisms share many processes and structures). Evolution explains the great diversity of life (see chapter __ “Microbial Genetics” of the Reader for more info on genetic diversity)
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/06%3A_Microbial_Genetics_and_the_Evolution_of_Antibiotic_ResistanceIf you change the DNA base sequence, you can change the amino acid sequence of the gene’s protein which may change the shape of the protein and the function of the protein. The “pairing” consists of f...If you change the DNA base sequence, you can change the amino acid sequence of the gene’s protein which may change the shape of the protein and the function of the protein. The “pairing” consists of formation of hydrogen bonds which can stabilize the DNA “double helix”. In DNA replication, one of the “old parent strands” of DNA acts a a guide or template for synthesis of a “complementary” new strand of DNA.
- https://bio.libretexts.org/Courses/Sacramento_City_College/Biology_342_-_The_New_Plagues/07%3A_Host_Defenses-normal microbiota: some mucous membranes (ex mouth, intestine, vagina, nose)are colonized by microbial mutualists and commensals which usually do not cause harm to the host . As with skin microbiota,...-normal microbiota: some mucous membranes (ex mouth, intestine, vagina, nose)are colonized by microbial mutualists and commensals which usually do not cause harm to the host . As with skin microbiota, these normal inhabitants can block attachment of pathogens to host cells, compete for nutrients and produce waste products which can inhibit the growth of many microbial pathogens.
