Choose the correct statement of the following  

a. The nucleosome consists of approximately equal masses of DNA and histones (including H1). 

b. The four core histones are present in equal amounts in the cell.

c. H1 is half as abundant as the other histones, which is consistent with the finding that only one molecule of H1 can associate with a nucleosome.

d. One turn around the nucleosome takes 80 bp of DNA

#Question id: 460

#Unit 1. Molecules and their Interaction Relevant to Biology

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)

#Question id: 461

#Unit 1. Molecules and their Interaction Relevant to Biology

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)

#Question id: 462

#Unit 1. Molecules and their Interaction Relevant to Biology

The formation of acetyl CoA is driven to completion by

#Question id: 463

#Unit 1. Molecules and their Interaction Relevant to Biology

Thioesters are similar to oxygen esters of carboxylic acids except that

#Question id: 464

#Unit 1. Molecules and their Interaction Relevant to Biology

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)

#Question id: 465

#Unit 1. Molecules and their Interaction Relevant to Biology

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?