TLS Online TPP Program

#Question id: 4309


Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype would you predict for this mutant?

#Section 3: Genetics, Cellular and Molecular Biology
  1. The mutant will grow rapidly.

  2. The mutant will require galactose for growth.

  3. The mutant will show decreased levels of gene expression.

  4. The mutant will show increased levels of gene expression.

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TLS Online TPP Program

#Question id: 464

#Section 4: Fundamentals of Biological Engineering

Calculate the equilibrium constant for an oxidation-reduction reaction involving the transfer of 1 mole of electrons with DE0ʹ= 0.25 V. (R = 8.315 JK-1mol-1, F = 96.48 kJV-1mol-1, T = 298 K)

TLS Online TPP Program

#Question id: 465

#Section 4: Fundamentals of Biological Engineering

If the standard reduction potential of a certain half-reaction is -0.30 V, which statement below is true for this half-reaction to proceed as a reduction?

TLS Online TPP Program

#Question id: 466

#Section 4: Fundamentals of Biological Engineering

When a reduction half-reaction is ________ (negative, positive), electrons flow to the more readily reduced substance which is ________ (negative, positive) in value.

TLS Online TPP Program

#Question id: 467

#Section 4: Fundamentals of Biological Engineering

The standard potential for electron transfer can be related to the standard free-energy change for redox reactions by using

TLS Online TPP Program

#Question id: 469

#Section 2: General Biology

The anaerobic conversion of 1 mol of glucose to 2 mol of lactate by fermentation is accompanied by a net gain of:

TLS Online TPP Program

#Question id: 532

#Section 4: Fundamentals of Biological Engineering

In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change (DG'°) of 23.8 kJ/mol.  Under what conditions (encountered in a normal cell) will the free-energy change (DG) be negative, enabling the reaction to proceed to the right?