Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Lecture 3 Macrobiology, Lecture notes of Biology

Chapters discussing bacteria and archaea and typing

Typology: Lecture notes

2019/2020

Uploaded on 08/13/2020

courtney-carr
courtney-carr 🇺🇸

4 documents

1 / 22

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
Bacteria and Archaea
Ch 27
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff
pf12
pf13
pf14
pf15
pf16

Partial preview of the text

Download Lecture 3 Macrobiology and more Lecture notes Biology in PDF only on Docsity!

Bacteria and Archaea

Ch 27

Microbes

Gram positive and negative bacteria

Bacterial Extracellular Elements

Bacterial DNA

Bacterial Mutations and Adaptation

  • (^) E. coli – 1x

chances of

mutation in a particular gene

  • (^) But 2x 10 new E. coli per day in one person
  • (^) 2000 mutations in that gene per day
  • 4300 total genes
  • (^) Experiment – low glucose

environment

  • (^) 5000 generations = 2 years

Transduction

Conjugation

Biofilms

Prokaryotic Phylogeny

Bacteria: Proteobacteria 2

  • (^) Gamma: Autotrophic sulfur

bacteria, heterotrophs

  • (^) Thiomargarita namibiensis, Legionella, Salmonella, Vibrio cholera, Escherichia coli
  • (^) Delta: Myxobacteria (slime

secreting), bdellovibrios

(predators)

  • (^) Epsilon: Mostly pathogenic
    • (^) Campylobacter, Helicobacter pylori

Bacteria

  • (^) Chlamydias: survive only within animal cells - (^) Chlamydia trachomatis
  • (^) Spirochetes: helical, spinning movement - Treponema pallidum, Borrelia burgdorferi
  • Cyanobacteria: perform photosynthesis
  • (^) Gram-positive bacteria: highly diverse
    • (^) Actinomycetes , Streptomyces , Bacillus anthracis, Clostridium botulinum, Staphylococcus, Streptococcus , mycoplasmas

Prokaryotes and

Ecology

  • (^) Decomposers
  • (^) Symbiotes
    • (^) Mutualism
    • Commensalism
    • (^) Parasites
    • (^) Pathogens

Pathogenic bacteria

  • (^) Exotoxins
  • (^) Endotoxins
    • (^) Gram negative only