Practice Questions

TLS Online TPP Program

#Question id: 290

Which of the following is a TRUE statement about ionic bonds in protein structure:

#Section 2: General Biology

Ionic bonds on the external surface of the folded protein are more stable than those buried in the protein interior.
In an ionic bond, a hydrogen atom carrying a partial positive charge on the electronegative atom of one covalent bond interacts with the partial negative charge of an electronegative atom of a second polar covalent bond.
Ionic bonds can only form between acidic and basic polar charged amino acid R groups in a specific pH range.
Ionic bonds only exist in inorganic molecules.

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TLS Online TPP Program

#Question id: 14927

#Section 5: Bioprocess Engineering and Process Biotechnology

Calculate RQ value based on the analysis of the inlet air and the exhaust gas as follows. —Inlet Air: 02, 20.90%; CO2, 0.01% — Outlet Gas: 02, 18.30%; CO2, 2.90%

TLS Online TPP Program

#Question id: 14928

#Section 5: Bioprocess Engineering and Process Biotechnology

Escherichia coli grows with a doubling time of 0.5 h in the exponential growth phase. What is the value of the specific growth rate?

TLS Online TPP Program

#Question id: 14929

#Section 5: Bioprocess Engineering and Process Biotechnology

Escherichia coli grows with a doubling time of 0.5 h in the exponential growth phase. How much time would be required to grow the cell culture from 0.1 to 10 kgdry cell m^-3

TLS Online TPP Program

#Question id: 14930

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli grows from 0.10 to 0.50 kg dry cell m^-3 in 1 h. Assuming exponential growth during this period, evaluate the specific growth rate

TLS Online TPP Program

#Question id: 14931

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli grows from 0.10 to 0.50 kg dry cell m^-3 in 1 h. Evaluate the doubling time during the exponential growth phase

TLS Online TPP Program

#Question id: 14932

#Section 5: Bioprocess Engineering and Process Biotechnology

E. coli grows from 0.10 to 0.50 kg dry cell m^-3 in 1 h. How much time would be required to grow from 0.10 to 1.0 kg dry cell m^-3? You may assume exponential growth during this period