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hoa [83]
3 years ago
15

Help me please!Cystic Fribrosis....​

Biology
1 answer:
kondaur [170]3 years ago
3 0

Explanation:

5--րդ դաս. Ես ձեզ նշումներ կտամ մեծացման հանդիպմանը գալու համար, ես 8194269079 գաղտնաբառ եմ aaaaa, սպասում եմ շուտով դասը կսկսվի

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Leaves lose the most chloroplasts at the end of summer.

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How do chemical,physical,geological,and biological factors influence an aquatic ecosystem
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A grad student has a culture of E. coli with a total volume of 1,800 mL, and OD reading at 550 nm of 1.7. He transfers 1 mL cult
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Explanation:

We'll represent the dilution as the volume transferred/total volume in the tube after transfer. So for the first dilution, 1 ml of culture was added into 9ml of broth bringing the total volume to 10 ml i.e 1/10

For the second dilution, 0.1 mL was added to 0.9mL of broth bringing the total volume to 1mL i.e 0.1/1.0 (this is also the same as 1/10). In relation to the stock culture, this is represented as 1/100 (that is 1/10 (first dilution) * 1/10 (second dilution)

Giving that the same was done for dilution 3 and 4,

third dilution is represented as: 1/10 and the fourth as 1/10 as well

In relation to the stock, dilution 3 is 1/1000

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b. the dilution spread onto the agar plate is the fourth dilution, that is, \frac{1}{10000} = 10^{4} or 1.0*10^{4}

c. Since the grad student got 386CFU/0.2mL (200 uL = 0.2mL),

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the cells in 1800mL is therefore 1930*1800 = 3,474,000 = 3.4*1010^{6}

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