Small organic molecules that usually make up all or part of enzyme cofactors and only very small amounts sustain growth

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#Question id: 2014

#Section 2: General Biology

Some pathogens can undergo rapid changes resulting in antigenic variation. Which of the following is such a pathogen?

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#Question id: 349

#Section 4: Fundamentals of Biological Engineering

Increased atmospheric CO2 concentrations might have what effect on seawater?

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#Question id: 14230

#Section 5: Bioprocess Engineering and Process Biotechnology

In current service, 20 kg s^-1 cooling water at 12⁰C must be circulated through a coil inside a fermenter to maintain the temperature at 37⁰C The coil is 150 m long with pipe diameter 12 cm; the exit water temperature is 28⁰C After the inner and outer surfaces of the coil are cleaned it is found that only 13 kg s^-1 cooling water is required to control the fermentation temperature. Calculate the overall heat-transfer coefficient before cleaning. _____________

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#Question id: 18686

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Homology modeling may be distinguished from ab initio prediction because: 

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#Question id: 14785

#Section 1: Engineering Mathematics

Three machines A, B and C produce identical items of their respective output 5%, 4% and 3% items are faulty. If A produces 25% of the total output, B produces 30% and C the remainder and an item selected at random is found to be faulty, what is the probability that it was produced by machine C?