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Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA in microbial cells The tree of life Physiological diversity of microorganisms Prokaryotic Diversity Eukaryotic Microorganisms

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Page 1: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresDNA in microbial cells

The tree of lifePhysiological diversity of microorganismsProkaryotic DiversityEukaryotic Microorganisms

Page 2: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig 2.1a Internal structure of prokaryotic cells

Page 3: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig 2.1a Internal structure of eukaryotic cells

Page 4: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.4 (a) The nucleoid

Page 5: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoid

double vs. single copy of genes

Page 6: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Page 7: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.3 (c) Size comparisons of viruses and cells

Page 8: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of life

Page 9: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.7 The phylogenetic tree of life as defined by comparative ribosomal RNA sequencing

Page 10: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of lifePhysiological diversity of microorganisms

Energy and carbon

Page 11: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.8 Metabolic options for obtaining energy

Page 12: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of lifePhysiological diversity of microorganisms

Energy and carbonTolerance of environmental extremes

Page 13: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Table 2.1 Classes and examples of extremophiles

Page 14: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of lifePhysiological diversity of microorganismsProkaryotic Diversity

Bacteria

Page 15: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.9 Phylogenetic tree of bacteria

Page 16: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.9 Phylogenetic tree of bacteria

Page 17: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.9 Phylogenetic tree of bacteria

Page 18: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of lifePhysiological diversity of microorganismsProkaryotic Diversity

BacteriaArchaea

Page 19: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.18. Detailed phylogenetic tree of Archaea

Page 20: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of lifePhysiological diversity of microorganismsProkaryotic Diversity Eukaryotic Diversity

Page 21: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.22 Detailed tree of Eukarya

Page 22: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. 2.22 Detailed tree of Eukarya

Page 23: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Fig. The demise of a Dinoflagellate from the Bronx River.

Page 24: Lecture 1. Microorganisms: an overview Chapter 1. Microorganisms and Microbiology Chapter 2. An overview of microbial life. Cell and viral structures DNA

Lecture 1. Microorganisms: an overview

Chapter 1. Microorganisms and Microbiology

Chapter 2. An overview of microbial life.

Cell and viral structuresNucleus vs. nucleoidSizes

Tree of lifePhysiological diversity of microorganismsProkaryotic Diversity Eukaryotic Diversity