Examples,
Bacteria that cause disease are called
pathogenic bacteria. Bacteria can cause diseases in humans, in other animals,
and also in plants. Some bacteria can only make one particular host ill; others
cause trouble in a number of hosts, depending on the host specificity of the
bacteria. The diseases caused by bacteria are almost as diverse as the bugs
themselves and include
food poisoning, anthrax, tooth ache.
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Vast numbers of bacteria live in our bodies. One example is found in the intestine. This bacteria and humans have formed a symbioses with each other. The bacteria help us with digestion and to produce vitamins. In exchange, they soak up a little extra food for themselves. Neat. Huh? Most dairy products are made by or with the help of bacteria. Some dairy foods are cheese, buttermilk, yogurt, and sour cream. Some other kinds of foods that involve bacteria in their production are pickles and high fructose corn syrup. |
Bacteria are,
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Unicellular |
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Internally simple |
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Reproduce asexually |
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Most are without chlorophyll |
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Both aerobic and anaerobic |
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Most are pathogenic |
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Some of them are useful
Examples, |
Bacteria: Cyano bacteria
Bacteria: Bacillus anthracis
Figure A. Transmission electron micrograph of thin sections of anthrax spores.
Figure B. Scanning electron micrograph of spores (oval shape) and vegetative cells (long rods) of Bacillus anthracis (anthrax).
Figure C. Transmission electron micrograph of thin sections of Bacillus anthracis (anthrax) vegetative cells.
