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Additional information

Useful websites

3.1  Useful websites.:

1. [1] 2.[2]

Reference Books

1. NCERT Text Books.

2. PUC Ist year and 2nd Year Text Books.

Teaching Outlines

Concept Bacteria

1. Habitat and size of Bacteria.
2. Classification of bacteria (based on shapes)
3. Structure of bacteria.

Brief Notes:

Habitat and size of bacteria:

Bacteria (/bækˈtɪəriə/ ( listen); singular: bacterium) are a large domain of prokaryotic microorganisms.

Bacteria are found everywhwere. - even on you ! 
Approximately 2,000 species have been identified, many of them living in conditions that would destroy other organisms.
 They have been found in the almost airless reaches of the upper atmosphere, 
10 km (6 mi) below the surface of the ocean, in frozen soil, and on rocks in hot springs.
 Some bacteria produce a resting stage, the endospore, which is the most resistant living thing 
known and can be killed only by boiling in steam under pressure for many hours.

 Size of bacteria:

Thirty trillion bacteria of average size weigh about 28 g (1 oz). Bacteria are measured in microns (0.001 micrometer, about 0.00004 in) and most types range from 0.1 to 4.0 microns in width and 0.2 to 50 microns in length.

Learning objectives

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Bacteria

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