Introduction to Bacteria 2 types of bacteria

Amimation of E.coli

Pilli

7 Major Structures of a Bacteria Cell

• hollow hair-like structures made of protein
• allows bacteria to attach to other cells.
• Pilli-singular
• Pillus-plural

Cytoplasm

7 Major Structures of a Bacteria Cell

• clear jelly-like material that makes up most of the cell

• Binary Fission- the process of one organism dividing into two organisms
• Fission is a type of asexual reproduction

Reproduction of Bacteria

How?...

The one main (circular) chromosome makes a copy of itself

Then it divides into two

• Asexual reproduction- reproduction of a living thing from only one parent

BINARY FISSION

Bacteria dividing

Completed

Reproduction of Bacteria

• The time of reproduction depends on how desirable the conditions are
• Bacteria can rapidly reproduce themselves in warm, dark, and moist conditions
• Some can reproduce every 20 minutes



(one bacteria could be an ancestor to one million bacteria in six hours)