An industrial-strength drain cleaner contains 5.00 kg of water and 5.00 kg of NaOH. What are the mass (weight) fraction and mole fraction of each component in the drain cleaner?

#Question id: 3728

#Section 3: Genetics, Cellular and Molecular Biology

Which is not an activity for DNA polymerase I?

#Question id: 18640

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

#Question id: 15493

#Section 4: Fundamentals of Biological Engineering

Assume that experimental measurements for a certain organism have shown that cells can convert two-thirds (wt/wt) of the substrate carbon to biomass carbon. Calculate the stoichiometric coefficients for the following biological reactions:

Glucose: C₆H₁₂O₆ + aO₂ + bNH₃ c(C_4.4H_7.3N_0.86O_1.2) + dH₂O + eCO₂

#Question id: 14300

#Section 5: Bioprocess Engineering and Process Biotechnology

A 15-m ³ chemostat is operated with dilution rate 0.1 h^-1. A continuous steriliser with steam injection and flash cooling delivers sterilized medium to the fermenter. Medium in the holding section of the steriliser is maintained at 130⁰C The concentration of contaminants in the raw medium is 10⁵ ml^-l; an acceptable contamination risk is one organism every 3 months. The Arrhenius constant and activation energy for thermal death are estimated to be 7.5 × 10³⁹ h^-1 and 288.5 kJ gmol^{- 1}, respectively. The steriliser pipe inner diameter is 12 cm. At 130⁰C the liquid density is 1000 kg m^{- 3} and the viscosity is 4 kg m^{- 1} h^{- 1}. Assuming perfect plug flow, determine the length of the holding section.   __________________

#Question id: 195

#Section 2: General Biology

Vitamin C is a vitamin but not a coenzyme because it