2. In which direction (into our out of cel) will water Bow in cells of E.coll (a

Question

2. In which direction (into our out of cel) will water Bow in cells of E.coll (an organism found in your large intestine) if they are suddenly suspended in a solution of 20% NaCl? what if the cells were suspended in 3. A student begins an experiment with 10,000 cells in a culture that has a generation time of 2h. How many 4. The following table provides you with data from an experiment of E.coll during growth in a minimal distilled water? cells will the student have in the culture after 4, 24, and 48 h? Determine the specific growth rate for medium containing glucose as the sole carbon and energy ource. the exponential phase. time culturable cell count daycm 218 10 263 10 175 10 109 107 1.54 109. 648 10 6.83 k 10 1.02 x 10'% 10 12 16 20 24 28 595 10 161 10

Explanation / Answer

2.) E .Coli and NaCl problem

So basically water flows from the direction of low concentration of solute(i.e high concentration of water ) to the region of high concentration of solute(i.e low concentration of water)

Hence when E.Coli is suspended in a solution of 20% NaCl water flows from E.Coli to the Nacl solution.It results in the shrinkage of E.Coli.

Moreover when E.Coli is suspended in the solution of distilled water , water flows into the E.Coli from distilled water and hence the E.Coli swells up .

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