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If you start out with 20 bacterial cells on your sandwich and their doubling time is 15 minutes, how many bacteria will be on your sandwich after just one hour?

Select one:
A. 320
B. 1024
C. 160
D. 64
E. 32
F. 16
G. 512
H. 8
I. 256
J. 40

Answer :

Starting with 20 bacteria and a doubling time of 15 minutes, there would be 320 bacteria after one hour, option (a) is correct.

To calculate the number of bacteria on the sandwich after one hour, we need to determine the number of doubling cycles that occur in that time period.

The doubling time is given as 15 minutes, which means that every 15 minutes, the number of bacteria doubles.

Therefore, the number of doubling cycles in one hour (60 minutes) can be calculated as:

Number of doubling cycles = (60 minutes) / (15 minutes per doubling)

= 4 doubling cycles

Now, let's calculate the number of bacteria after each doubling cycle:

1st doubling cycle = 20 bacteria × 2

= 40 bacteria

2nd doubling cycle = 40 bacteria × 2

= 80 bacteria

3rd doubling cycle = 80 bacteria × 2

= 160 bacteria

4th doubling cycle = 160 bacteria × 2

= 320 bacteria

After four doubling cycles, there would be 320 bacteria on the sandwich after one hour, option (a) is correct.

To learn more about bacteria follow the link:

https://brainly.com/question/15490180

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