Yeast cells are to be separated from a fermentation broth. Assume that the cells are spherical with diameter 5 µm and density 1.06 g cm^-3. The viscosity of the culture broth is 1.36 x 10^-3 N s m^-2. At the temperature of separation, the density of the suspending fluid is 0.997 g cm^-3. 500 litres broth must be treated every hour. Specify Σ for a suitably-sized disc-stack centrifuge

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#Question id: 14397

#Section 5: Bioprocess Engineering and Process Biotechnology

A purified hydrolytic enzyme (Mr 150 000) is available with the description: Gives a Vmax of 3 200 units/mg protein under optimal conditions. How many nmol of enzyme are there in 1 mg  

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#Question id: 14854

#Section 1: Engineering Mathematics

If the sum of the mean and the variance of a Binomial distribution for 5 trials is 1.8 find the distribution.

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#Question id: 1909

#Section 2: General Biology

Concerning MHC class II antigen differences between two individuals, which of the following is NOT TRUE?

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#Question id: 2095

#Section 3: Genetics, Cellular and Molecular Biology

Glycolipids and glycoproteins are especially abundant in the

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#Question id: 14656

#Section 1: Engineering Mathematics

Which of the following limit exist ?