Classification of Bacteria

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Presentation transcript:

Classification of Bacteria Biology CP

What is Bacteria? Prokaryotic Can be: Eubacteria Archaebacteria

What is Bacteria? Prokaryotic: does NOT have a nucleus Can be: Eubacteria Archaebacteria

What is Bacteria? Prokaryotic: does NOT have a nucleus Can be: Eubacteria Larger of the 2 kingdoms Can live almost anywhere Have a cell wall composed of PEPTIDOGLYCAN (a carbohydrate) Archaebacteria Live in harsh environments Lack peptidoglycan, different membrane lipids DNA sequences are more similar to eukaryotes

Match the Bacterial Shapes Bacilli Cocci Spirilla

Bacterial Shapes Bacilli Cocci Spirilla Lactobacillus plantarum Sauerkraut, pickles, kimchi Cocci Staphylococcus aureus Causes staph infection Spirilla Borrelia burgdorferi Causes Lyme disease

Structure of Bacteria DNA Cell Wall Plasma Membrane Cytoplasm Ribosomes Pili Flagella

Types of Cell Walls Gram-Positive Gram-Negative Thick peptidoglycan walls Stain violet Gram-Negative Thinner walls with an outer layer Stain red/pink

Which is gram-positive? gram-negative?

Metabolic Diversity Heterotrophs Autotrophs Chemoheterotrophs Organic molecules for energy source Photoheterotrophs Use sunlight for energy source Both Have to take in organic compounds as a carbon source Chemoautotrophs Chemical reactions provide energy source Photoautotrophs Use sunlight for energy source Ex: Cyanobacteria Both Produce own food by converting CO2 and H2O to carbon compounds

Match the Use of Oxygen Obligate aerobe Obligate anaerobe Mycobacterium tuberculosis Obligate anaerobe Clostridium botulinum Facultative anaerobe E. coli Can live with or without oxygen NEEDS oxygen to live Must live in an environment WITHOUT oxygen

Match the Use of Oxygen Obligate aerobe Obligate anaerobe Facultative anaerobe Can live with or without oxygen NEEDS oxygen to live Must live in an environment WITHOUT oxygen

Bacterial Reproduction Binary Fission https://www.youtube.com/watch?v=Th4v_Q1iHfY Conjugation http://www.youtube.com/watch?v=7stZk6TesKk Spore Formation http://www.youtube.com/watch?v=NAcowliknPs Example: Bacillus anthracis