Classification of Bacteria Biology CP What is Bacteria

Classification of Bacteria Biology CP

What is Bacteria? � Prokaryotic � Can be: � Eubacteria � Archaebacteria

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

What is Bacteria? � Prokaryotic: � Can does NOT have a nucleus 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 � 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 � 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 � Chemoautotrophs � Organic molecules for energy source � Photoheterotrophs � Use sunlight for energy source � Both � Have to take in organic compounds as a carbon source � Chemical reactions provide energy source � Photoautotrophs � Use sunlight for energy source � Ex: Cyanobacteria � Both � Produce own food by converting CO 2 and H 2 O to carbon compounds

Match the Use of Oxygen � Obligate � live with or without oxygen anaerobe Clostridium botulinum � Facultative � � Can Mycobacterium tuberculosis � Obligate � aerobe E. coli � NEEDS oxygen to live anaerobe � 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=Th 4 v_Q 1 i. Hf. Y � Conjugation http: //www. youtube. com/watch? v=7 st. Zk 6 Tes. Kk � Spore Formation http: //www. youtube. com/watch? v=NAcowlikn. Ps � Example: Bacillus anthracis