1. A certain type of E. coli ( bacteria), given a favorable growth medium, doubl

Question

1. A certain type of E. coli (bacteria), given a favorable growth medium, doubles in population every 8 hours. Given that there were approximately 100 bacteria to start with, how many bacteria will there be in a 2.5 days?

2. Using E. coli to calculate how many cells (Nf) will be present in a ham sandwich after it was left and a shelf for 2 days. Assuming that (Ni) is 200 (Number of cells deposited in the sandwich during preparation). Generation time or doubling time is 40 minutes. 5 pts. (Please show all work; calculator required)

Explanation / Answer

1. 2.5 days =60 hours

60/8 = 7.5

A = Pekt

By this we can calculate no. of bacteria.

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