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What are the two major classifications of bacteria? Are all bacteria harmful? Give examples. [2 MARKS]


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Solution

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Two major classification of bacteria are archaebacteria and eubacteria. They are classified on the basis of cell wall.
No, not all bacteria are harmful.
For example, clostridia, streptococci, staphylococci are harmful whereas E.coli and streptomyces are useful bacteria.


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