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A Student Adds 5 Bacterial Cells to a Test Tube

Question 19

Multiple Choice

A student adds 5 bacterial cells to a test tube containing fresh medium and incubates it for 3 hours at 37°C.  If the bacterial population shows an initial lag phase of 20 minutes followed by a doubling time of 40 minutes, what is the approximate number of bacterial cells present at the end of the incubation period?  (Note: Assume unrestricted growth during incubation.)


A) 20 cells
B) 40 cells
C) 80 cells
D) 160 cells

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