The growth of S.cerevisiae on glucose under anaerobic conditions can be described by the following reaction:

C₆H₁₂O₆ + aNH₃ → 0.59 CH_1.64N_0.16O_0.52 (biomass) + 0.43 C₃H₈O₃ + 1.54CO₂ + 1.3C₂H₅OH + 0.036H₂O 

and determine the product yield coefficient Y etoh/s and determine coefficient a.

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#Question id: 15564

#Section 5: Bioprocess Engineering and Process Biotechnology

A substrate is consumed in a zero order reaction such that the concentration falls from 40 g/l to 20 g/l in 4 h. How long will it take the substrate to fall from 20 g/l to 2 g/l:

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#Question id: 15565

#Section 5: Bioprocess Engineering and Process Biotechnology

 In a first order reaction A→B. The plot is a straight line

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#Question id: 15566

#Section 5: Bioprocess Engineering and Process Biotechnology

Rate constant k for a first order reaction has been found to be 2.54 × 10^-3 sec^-1. Calculate its 3/4th life, (log 4 = 0.6020).

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#Question id: 15567

#Section 1: Engineering Mathematics

The method for determination of a root of a non-linear equation which uses two initial guess roots but does not require that they must bracket the root, is? 

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#Question id: 15568

#Section 1: Engineering Mathematics

The quadratic equation 2x² + 3x + 8 = 0 is to be solved numerically starting with an initially value of xo = 2. The new estimate of x after the first iteration using Newton Raphson method is 

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#Question id: 15569

#Section 1: Engineering Mathematics

A root x⁴ — 3x + 1 = 0 needs to be found using the Newton-Raphson method. If the initial guess xo and 0, then the new estimate x1 after the first iteration is