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TLS Online TPP Program

#Question id: 403

For the reaction A -> B, DG'° = –60 kJ/mol.  The reaction is started with 10 mmol of A; no B is initially present.  After 24 hours, analysis reveals the presence of 2 mmol of B, 8 mmol of A. Which is the most likely explanation?

#Section 4: Fundamentals of Biological Engineering

  1. A and B have reached equilibrium concentrations.

  2. An enzyme has shifted the equilibrium toward A.

  3. B formation is kinetically slow; equilibrium has not been reached by 24 hours.

  4. Formation of B is thermodynamically unfavorable.

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TLS Online TPP Program

#Question id: 642

#Section 2: General Biology

The graphs P, Q and R show the variation of rate constant (k) with temperature. The reactions represented by P, Q and R, respectively, are
TLS Online TPP Program

#Question id: 104

#Section 2: General Biology

Which of the following is the simplest lipids but they may be a part of or a source of many complex lipids.
TLS Online TPP Program

#Question id: 3854

#Section 3: Genetics, Cellular and Molecular Biology

In prokaryotes, the presence of a protein called rho will:
TLS Online TPP Program

#Question id: 4327

#Section 3: Genetics, Cellular and Molecular Biology

What would occur if the repressor of an inducible operon were mutated so it could not bind the operator?
TLS Online TPP Program

#Question id: 363

#Section 4: Fundamentals of Biological Engineering

What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)