TLS Online TPP Program

#Question id: 5583


In mammals, dosage compensation is carried out by:

#Unit 5. Developmental Biology
  1. decreasing the transcription of the X in males

  2. increasing the transcription of the X in males

  3. inactivating one X chromosome in females by condensation as heterochromatin

  4. inactivating one X chromosome in males by condensation as heterochromatin

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TLS Online TPP Program

#Question id: 459

#Unit 1. Structure and Function of Biomolecules

Calculate △G°ʹ for the reaction shown if the mass action ratio, Q, is 5.3 × 102 M-1 and △G is 46 kJ/mol at a temperature of 298 K. (R = 8.315 J/K-mol)

ADP + Pi ⇌ ATP

TLS Online TPP Program

#Question id: 460

#Unit 1. Structure and Function of Biomolecules

The hydrolysis of ATP to ADP has a △G°ʹ of -30 kJ/mol. If in an E. coli cell the concentrations of ATP, ADP and inorganic phosphate are 7.90 mM, 1.04 mM and 7.9 mM, respectively, which statement is true about the hydrolysis of ATP in the cell? (Assume a temperature of 298 K. R = 8.315 J/K-mol)

TLS Online TPP Program

#Question id: 461

#Unit 1. Structure and Function of Biomolecules

The conversion of glucose-1-phosphate to glucose-6-phosphate by the enzyme phosphoglucomutase has a △G°ʹ of -7.6 kJ/mol. Calculate the equilibrium constant for this reaction at 298 K and a pH of 7. (R = 8.315 J/K-mol)

TLS Online TPP Program

#Question id: 462

#Unit 1. Structure and Function of Biomolecules

The formation of acetyl CoA is driven to completion by

TLS Online TPP Program

#Question id: 463

#Unit 1. Structure and Function of Biomolecules

Thioesters are similar to oxygen esters of carboxylic acids except that

TLS Online TPP Program

#Question id: 464

#Unit 1. Structure and Function of Biomolecules

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)