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Bacterial Growth the questions 10.0 1.0 0.1 00.1 time (hours) 1. Which culture has the longest lag time? 2. Which culture has the fastest growth rate? 3. Which culture has the shortest doubling time? 4. Which culture has the highest cell density? 5. What is the doubling time of culture 1? 6. What is the growth rate of culture 1? 14 18

Solution

1. Based on the graph given, culture 1 has the largest lag phase.

Explanation- During lag phase, bacteria mature but there is no division.

2. Culture 3 has the fastest growth rate.

Explanation- Bacterial growth in a culture takes place exponentially