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From Karnataka Open Educational Resources
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, 07:14, 30 August 2013
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| '''Size of bacteria:''' | | '''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. | | 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. |
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| + | 2. '''Classification of bacteria on the basis of shapes:'''<br> |
| + | Content: Teaching Outlines.<br> |
| + | Bacteria are neither plant nor animal. Both bacteria and plants have rigid cell walls, but unlike plants, <br>most kinds of bacteria move about and use organic foods for energy and growth; only a few use photosynthesis.<br> |
| + | On the basis of their shapes,bacteria may be grouped into three main type; |
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| ===Learning objectives=== | | ===Learning objectives=== |