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Bacteria Bacteria

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Page 1: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

BacteriaBacteria

Page 2: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

BacteriaBacteria Microscopic organisms that are Microscopic organisms that are

prokaryotesprokaryotes Make up two kingdoms of the Make up two kingdoms of the

classification system:classification system:– EubacteriaEubacteria– ArchaebacteriaArchaebacteria

First organism on earthFirst organism on earth Highly evolved and very diverseHighly evolved and very diverse

Page 3: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Page 4: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Page 5: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Structure of a BacteriaStructure of a Bacteria

ChromosomesChromosomes CapsuleCapsule RibosomesRibosomes Cell WallCell Wall Plasma MembranePlasma Membrane Flagella - movementFlagella - movement Pili - attachmentPili - attachment

Page 6: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

EubacteriaEubacteria

The most common type of The most common type of bacteriabacteria

Found almost everywhere Found almost everywhere except extreme environmentsexcept extreme environments

Strong cell walls made of Strong cell walls made of peptidoglycanpeptidoglycan

Some have two cell wallsSome have two cell walls

Page 7: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

ArchaebacteriaArchaebacteria

Found in extreme environmentsFound in extreme environments Thermoacidophiles: found in Thermoacidophiles: found in

hot, acidic environmentshot, acidic environments Halophiles: found in very salty Halophiles: found in very salty

environmentsenvironments Methanogens: cannot live in the Methanogens: cannot live in the

presence of oxygenpresence of oxygen

Page 8: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Bacteria ShapesBacteria Shapes

There are three different There are three different shapes of bacteria:shapes of bacteria:– Cocci (round)Cocci (round)– Bacilli (rod-shaped)Bacilli (rod-shaped)– Spirilli (spiral-shaped)Spirilli (spiral-shaped)

Page 9: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

CocciCocci

Page 10: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

BacilliBacilli

Page 11: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

SpirilliSpirilli

Page 12: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Reproduction Reproduction

Most reproduce by binary fissionMost reproduce by binary fission– The cell divides into two The cell divides into two

daughter cellsdaughter cells– The single chromosome is also The single chromosome is also

duplicatedduplicated

Page 13: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Reproduction Reproduction (Continued)(Continued)

Certain bacteria undergo Certain bacteria undergo conjugationconjugation– Genetic information is Genetic information is

transferred from one cell to transferred from one cell to anotheranother

– New gene combinations are New gene combinations are formedformed

Page 14: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

SurvivalSurvival

Certain bacteria may undergo Certain bacteria may undergo Spore Formation to help survive in Spore Formation to help survive in harsh environmental conditionsharsh environmental conditions– An endospore contains DNA and An endospore contains DNA and

some cytoplasmsome cytoplasm– Remains dormant for months or Remains dormant for months or

years years – Anthrax, botulism, tetanusAnthrax, botulism, tetanus

Page 15: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Special Types of Special Types of BacteriaBacteria

PhotoautotrophsPhotoautotrophs ChemoautotrophsChemoautotrophs AerobesAerobes AnaerobesAnaerobes Facultative AnaerobesFacultative Anaerobes

Page 16: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

Harmful vs. Helpful Harmful vs. Helpful BacteriaBacteria

Some bacteria are Some bacteria are beneficialbeneficial

Others are harmfulOthers are harmful Micro-viewer labMicro-viewer lab

Page 17: Bacteria. Bacteria Microscopic organisms that are prokaryotes Microscopic organisms that are prokaryotes Make up two kingdoms of the classification system:

CAMPBELL - Weebly...Concept 27.1: Structural and functional adaptations contribute to prokaryotic success Earth’s first organisms were likely prokaryotes Most prokaryotes are unicellular,

Bacteria UNIT 3 - Chapter 19. Prokaryotes Definition: single-celled organisms that lacks a NUCLEUS OLD Classification – MONERA Prokaryotes called BACTERIA

Also: endosymbiosis Smaller prokaryotes became incorporated inside larger prokaryotes. These smaller organisms eventually became mitochondria and chloroplasts

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Survey of Microbes Part I: Important prokaryotes Gram negative organisms, archaea, and others

Prokaryotes: Domain Bacteria & Archaea world.pdf · Mostly unicellular (single-celled), some are colonial organisms ... Prokaryotes lack nuclei 2) Have cell walls exterior to their

Prokaryotes - McGill University · 2010-01-12 · Prokaryotes The Basic Structure Of A Prokaryote Prokaryotes are the single-celled organisms, such as bacteria, and are roughly in

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You Make Me Sick! Bacteria and Viruses. Bacteria Oldest living organisms Microscopic prokaryotes Bacteria=prokaryotes,prokaryotes=bac teria Previously

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EARLY EARTH & PROKARYOTES - WordPress.com › 2013 › 07 › ... · 2013-07-27 · Some prokaryotes decompose dead organisms, returning nutrients to the soil which plants then use

1 Chapter 19- Bacteria. 2 I. Bacteria A. Classifying Prokaryotes 1. Prokaryotes are organisms WITHOUT a nucleus. 2. Prokaryotes can be divided into Eubacteria

Classification of living organisms The Kingdoms All living things are divided into 5 kingdoms: 1.Prokaryotes - Single celled organisms

Bacteria and Viruses Chapter 18. Bacteria Prokaryotes-single-celled organisms without an nucleus Prokaryotes-single-celled organisms without an nucleus

Kingdoms Archaebacteria and Eubacteria. General Prokaryotes are single-celled organisms. They are the smallest, simplest organisms. The group includes:

Overview of Diversity. Prokaryotes §Prokaryotes are the earth’s oldest organisms, and also the most abundant ones. §Bacteria are prokaryotes. §Prokaryotes

● Organisms are either: Single-celled, such as most prokaryotes and protists or Multicelled, such as plants, animals, and most fungi The Microscopic World

The Architecture of Cells By Keene Folwell. -Prokaryotes are ancient, small, and simple organisms. Prokaryotes -Share many essential subcellular structures

Prokaryotes Life Science. What are Prokaryotes? Single-celled organisms Very tiny Cannot be seen without a microscope Our microscopes are not

Viruses and Prokaryotes · Prokaryotes Recall: Prokaryotes are single celled organisms that lack membrane-bound organelles. Prokaryotes have been on earth for more than 3.5 billion

Overview of the chapter Prokaryotes are microscopic. They have a biomass that is ten times larger than all eukaryotes. Think of this; The amount of prokaryotes

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Prokaryotes - Le cerveau à tous les niveauxlecerveau.mcgill.ca/flash/capsules/articles_pdf/prokariotes.pdf · Prokaryotes are the single-celled organisms, such as bacteria, and are

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Prokaryotes Chapter 27. Slide 2 of 20 Kingdom Monera Prokaryotes Unicellular (Single-celled) organisms that lack membrane-bound organelles and nuclei