In a plant species, a segregating line (RR- Red, Rr- Pink and rr- white) that contains both homozygotes and heterozygotes at a locus can be made homozygous by repeated selfing for several generations. What is the proportional red flower in third generations of selfing, if the level of heterozygosity in generation '0' is denoted as 1?

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#Question id: 15475

#Section 4: Fundamentals of Biological Engineering

Production of single-cell protein from hexadecane is described by the following reaction equation:

C₁₆H₃₄ + aO₂ + bNH₃ cCH_l.66O_0.27N0_.20 + dCO ₂ + eH₂O

where CH _1.660_0.27N_0.20 represents the biomass. If RQ= 0.43, determine the stoichiometric coefficients.

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#Question id: 15496

#Section 4: Fundamentals of Biological Engineering

S. cerevisiae produces ethanol at a yield of 0.5 g/g glucose. The strain ferments 20g/l glucose in 24 hours. Calculate productivity of ethanol in this fermentation

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#Question id: 14359

#Section 5: Bioprocess Engineering and Process Biotechnology

How many enzyme units are there in 1 katal? 

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#Question id: 9276

#Section 2: General Biology

The carotenoid b-carotene, whose structure and absorption spectrum at,

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#Question id: 14330

#Section 5: Bioprocess Engineering and Process Biotechnology

A radioactive isotope decays at a rate proportional to the amount of isotope present. If the concentration of isotope is C (mg l^-I), its rate of decay is:

                                                                    

A solution of the isotope ³²p is used to radioactively label DNA for hybridisation studies. The half-life of ³²p is 14.3 days. According to institutional safety requirements, the solution cannot be discarded until the activity is 1% its present value. How long will this take?____________________