From the graph above, at what time the number of living bacteria is increasing at the greatest rate
A
During the first 2 hours
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B
Between the 2nd and the 4th hour
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C
Between the 4th and the 6th hour
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D
Between the 6th and the 10th hour
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E
Between the 11th and the 13th hour
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Solution
The correct option is C Between the 4th and the 6th hour The greatest rate of bacterial population growth occurs between 4 and 6 hours after inoculation. The curve is steepest between 4 and 6 hours after inoculation, making that the time period with the greatest rate of growth. Hence, the correct answer is option C.