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

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

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 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