WHAT IS ONE WAY A BACTERIUM IMPACTS

YOUR LIFE????

Nucleus?- Yes or NO?

2 Kingdoms of Bacteria:

Where would you find a bacterium?

• WHY AREN’T THEY TAKING OVER THE PLANET?

Limiting Factors-that’s WHY•

Reproduction of Bacteria-

Asexual and Sexual

What is Binary Fission?• Asexual Reproduction

• 1 cell divides into two genetically identical cells. (NOT MITOSIS; BECAUSE BACTERIA HAVE NO NUCLEUS)

SMART BACTERIA??????

Bacteria can also reproduce sexually!!!

• A type of Sexual Reproduction

• One Bacterium transfers (all or some) of its genetic material to another bacterium through a PILUS.

• The amount of DNA transferred depends on the length of time conjugation lasts.

PLASMIDS-Small rings of “extra” DNA-

•

                                                           

May be transferred during conjugation

This is a factor in antibiotic resistance.

GOOD AND BAD BACTERIA

How do Bacteria Cause Disease?

• Only a small number of bacteria cause disease, BUT they cause ½ of all human diseases.

1. These type of bacteria are HETEROTROPHIC-Directly breaking things down for food.

2. They may produce Toxins that travel through the organism, disrupting normal activity.

Botulism is a paralytic condition brought on by the consumption of a naturally occurring toxin produced by the bacterium Clostridium botulinum. It is an intoxication rather than an infectious disease. The bacterium is widespread in soils in North America and elsewhere in the world. The toxin produced during growth of the bacterium is one of the most poisonous substances known

Dental Cavities(porfiromonas gingivalis treponemas veillonella bacteroides capnocitofaga actinomyces Actinomycetemcom

Strep Throat

Tuberculosis

Tetanus(Lockjaw)

Borrelia burgdorferi are helical shaped bacteria about 10-25µm long

WHY COULD BACTERIA BE IMPORTANT?? Chemical Factories use bacteria to produce Butanol, Acetone, and fuels such as Methane When bacteria break down biomass, methane and carbon dioxide are produced. This methane can be captured, in sewage treatment plants and landfills, for example, and burned for heat and power.

StreptomycinErythromycinBacitracinNeomycin