Introduction to Bacteria 2 types of bacteria



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Bacteria ppt


Introduction to Bacteria

2 TYPES OF BACTERIA:
    • Bacteria

    • -Get food from an outside source
    • Blue-green Bacteria

    • -Make their own food

BACTERIA

Bacteria - small one celled monerans

Spiral:

spirilla


rod-shaped: bacilli, bacillus

Round:

cocci


3 Shapes of Bacteria

Bacteria are classified by shape into 3 groups:



3 Shapes of Bacteria

Bacillus anthracis – (bacillus)

Neisseria meningitidis (coccus)

Leptospira interrogans – (spirilla)

7 Major Structures of a Bacteria Cell


  • Capsule
  • Cell wall
  • Ribosomes
  • Nucleoid
  • Flagella
  • Pilli
  • Cytoplasm

Capsule

7 Major Structures of a Bacteria Cell


  • keeps the cell from drying out and helps it stick to food or other cells

Cell wall

7 Major Structures of a Bacteria Cell



Ribosomes

7 Major Structures of a Bacteria Cell


  • cell part where proteins are made
  • Ribosomes give the cytoplasm of bacteria a granular appearance in electron micrographs

Nucleoid

7 Major Structures of a Bacteria Cell


  • a ring made up of DNA

Flagella

7 Major Structures of a Bacteria Cell



7 Major Structures of a Bacteria Cell


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