10. Escherichia coli is a bacteria that can cause food poisoning if people eat contaminatedfood or drink. In the laboratory, Escherichia coli can triple every hour. If the bacteriacount in a sample contaminated water is found to be 50 after the first hour, how long willit be until the count exceeds 100 000? Express your answer in hours. Use the explicitformula for your solution. Express your answer to two decimal places. Use methodslearnt in class.

Initial count of bacteria = 50 Final Count of bacteria = 100000 Tripling time = 1 Hour

Answered: 10. Escherichia coli is a bacteria that…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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o NB4: Why do you think you first had to make the 1 mM solution instead of working directly from the stock solution?
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Q1/ Choose the Right Answer 1. Biomaterials science is not significant monetarily, but the magnitude of the field is extremely important since biomaterials are used to save millions of lives. a) Ttrue , b) False
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7. E. Coli bacteria were grown in a 5.0 L batch cell culture reactor, with the following data collected: Cell Count (per mL) 10,277,000 Inoculation Time ---> Time 11:19 am 11:35 am 11:57 pm 12:08 pm 12:45 pm 1:07 pm 1:11 pm 1:16 pm 1:19 pm 1:34 pm 1:46 pm 1:57 pm 2:09 pm 2:33 pm 10,313,000 20,984,000 29,750,000 60,202,000 210,909,000 224,750,000 227,960,000 229,216,000 229,115,000 227,260,000 204,935,000 183,745,000 146,103,000 (inoculation is when the cells are first put in the growth media) A. Draw a log10 X vs. time graph and label the phases for batch cell growth. B. Calculate the specific growth rate, μ, and mass doubling time, td, for the exponential growth phase. C. Calculate kd, the specific rate of cell mass loss due to cell death (For B & C, it will be helpful to re-plot the y-axis as In X or In (X/X.), and focus on only the data in that phase) Using spreadsheet software will be helpful in drawing this graph and analyzing data for parts B & C. Be as quantitative as possible,…

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