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7. Suggest improvement method to obtain more accurate data. (K5P2)
Sterile all the apparatus before the experiment/ carry out experiment in the sterile area.
8. Is the data collected valid? Give your explanation. (K5P3) (K5P4)
Yes because the microorganisms growth well in pH 7 which is the optimum pH. The acidic or alkaline
condition is not suitable for the growth of microorganisms.
Conclusion(K4P3)
Hypothesis is accepted. The growth of Bacillus sp. Is most rapid at pH 7.
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