thermodynamics-and-free-energy biochemistry question and answers -Page first

CuriousTab

CuriousTab

Home Aptitude

Thermodynamics and Free Energy problems

1. If the Standard Gibb's free energy, ?G�, for a reaction is positive then
Options
A. the products will be favored
B. the reactants will be favored
C. the concentration of the reactants and products will be equal
D. all of the reactant will be converted to product

2. Reactions that have positive standard free energy changes (?G_o> 0) can be made to occur in cells by
Options
A. coupling them with exergonic reactions via a common intermediate
B. manipulating the concentrations of products and reactants such that G/<0
C. coupling them to the hydrolysis of ATP
D. all of the above

3. The unfolding of regular secondary structure causes
Options
A. little increase in the entropy of protein
B. large decrease in the entropy of the protein
C. no change in the entropy of the protein
D. large increase in the entropy of the protein

4. The Standard Gibb's free energy, ?G�, is
Options
A. the residual energy present in the reactants at equilibrium
B. the residual energy present in the products at equilibrium
C. the difference in the residual energy of reactants and products at equilibrium
D. the energy required to convert one mole of reactants to one mole of products

5. During the unfolding reaction of a helix, breakage of each hydrogen bond requires about 2kJ/mol. This implies hydrogen bonds are
Options
A. much stronger in proteins than in water
B. not reformed with water
C. slightly weaker in proteins than in water
D. slightly stronger in proteins than in water

First

More in Biochemistry: