For the activated-sludge, the specific growth rate of cells is given by 

 

The following parameter values are known: F = 500 l/h, α = 0.4, ɣ = 0.1, Xe = 0, V = 1500 l, Ks = 10 mg/l, µm = 1 h-1 , kd = 0.05 h-1 , S0 = 1000 mg/l, Y M X/S = 0.5 g dw/g substrate. Calculate the substrate concentration (S) in the reactor at steady state. -------------------------

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#Question id: 1102

#SCPH01 Biochemistry

Caffeine is an inhibitor of phosphodiesterase. Therefore, the cells of a person who has recently consumed coffee would have increased levels of which of the following molecules?

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#Question id: 363

#I Life Science/ Life Sciences Group – I-V

What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)

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#Question id: 8693

#SCPH28 | Zoology

Given that phylogenies are based on shared derived characteristics, which of the following traits is useful in generating a phylogeny of species W, X, Y, and Z

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#Question id: 11959

#SCPH28 | Zoology

The process by which digested dietary substances cross cell membranes to be used by the body is known as ________.

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#Question id: 2958

#I Life Science/ Life Sciences Group – I-V

Which of the following structures is not a feature of the mitotic chromosome?