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TLS Online TPP Program

#Question id: 15549

k for a zero order reaction is 2×10-2 mol/L s. If the concentration of the reactant after 25s is 0.5 M. Calculate the initial concentration of the reactant.

#Section 5: Bioprocess Engineering and Process Biotechnology
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TLS Online TPP Program

#Question id: 1121

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following provides the best evidence that cell-signaling pathways evolved early in the history of life?
TLS Online TPP Program

#Question id: 14248

#Section 5: Bioprocess Engineering and Process Biotechnology

A steam steriliser is used to sterilise liquid medium for fermentation. The initial concentration of contaminating organisms is 108 per litre. For design purposes, the final acceptable level of contamination is usually taken to be 10-3cells; this corresponds to a risk that one batch in a thousand will remain contaminated even after the sterilisation process is complete. For how long should 1 m3 medium be treated if the temperature is 140⁰C ________________.

        To be safe, assume that the contaminants present are spores of Bacillus stearothermophilus, one of the most heat-resistant microorganisms known. For these spores the activation energy for thermal death is 283 kJ gmo1-1 and the Arrhenius constant is 1036.2 s-1

TLS Online TPP Program

#Question id: 176

#Section 2: General Biology

A peptide has the sequence Glu–His–Trp–Ser–Gly–Leu–Arg–Pro–Gly. What is the net charge of the molecule at pH 3
TLS Online TPP Program

#Question id: 543

#Section 4: Fundamentals of Biological Engineering

If glucose labeled with 14C at C-1 (the aldehyde carbon) were metabolized in the liver, the first radioactive pyruvate formed would be labeled in:
TLS Online TPP Program

#Question id: 16447

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

2000 bp pair DNA can be using by cutter of