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TLS Online TPP Program

#Question id: 343

Assume that acid rain has lowered the pH of a particular lake to pH 5.0. What is the hydroxide ion concentration of this lake?

#I Life Science/ Life Sciences Group – I-V

  1. 1 × 10^-9 mol of hydroxide ions per liter of lake water

  2. 1 × 10^-5 mol of hydroxide ions per liter of lake water

  3. 5.0 M hydroxide ion

  4. 5.0 × 10^-5 mol of hydroxide ions per liter of lake water

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TLS Online TPP Program

#Question id: 19665

#SCPH05 I Biotechnology

When phenol reacts with bromine water, what is the result?
TLS Online TPP Program

#Question id: 4956

#SCPH28 | Zoology

Which measurement would help determine absolute dates by radiometric means?
TLS Online TPP Program

#Question id: 14259

#SCPH05 I Biotechnology

C. roseus cells immobilized in Ca-alginate beads of diameter 0.5 mm are used for production of indole alkaloids (IA) in a fluidized-bed bioreactor. The rate limiting nutrient is glucose and no intraparticle diffusion limitations exist. Use the following data: Flow rate of the feed: Q = 1 l/h, Glucose in the feed: So = 30 g/l, Plant Cell Concentration: X = 6 g/l reac. The rate constant for IA formation: k = 5 d-1 (g/l)^-1 Ks = 0.4 g/l, Column diameter: Do = 0.15 m. Growth is negligible and Monod kinetics is valid. For 95% glucose conversion determine volume. 
TLS Online TPP Program

#Question id: 11377

#SCPH28 | Zoology

Which one of the following statements is correct?
TLS Online TPP Program

#Question id: 14826

#I Life Science/ Life Sciences Group – I-V

An advantage of the smaller size of prokaryotes, compared to eukaryotes, is