TLS Online TPP Program

#Question id: 736


The most important contribution to the stability of a protein’s conformation appears to be the:

#Part-B Specialized Branches in Biotechnology
  1. entropy increase from the decrease in ordered water molecules forming a solvent shell around it.

  2. maximum entropy increase from ionic interactions between the ionized amino acids in a protein.

  3. sum of free energies of formation of many weak interactions among the hundreds of amino acids in a protein.

  4. sum of free energies of formation of many weak interactions between its polar amino acids and surrounding water.

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TLS Online TPP Program

#Question id: 400

#Part-B Specialized Branches in Biotechnology

Consider two solutions: solution X has a pH of 4; solution Y has a pH of 7. From this information, we can reasonably conclude that ________.

TLS Online TPP Program

#Question id: 401

#Part-B Specialized Branches in Biotechnology

.Which of the following graphs describes the relationship between [H3O+] and pH?

TLS Online TPP Program

#Question id: 402

#Part-A Aptitude & General Biotechnology

If the DG'° of the reaction A -> B is –40 kJ/mol, under standard conditions the reaction:

TLS Online TPP Program

#Question id: 404

#Part-B Specialized Branches in Biotechnology

When a mixture of 3-phosphoglycerate and 2-phosphoglycerate is incubated at 25 °C with phosphoglycerate mutase until equilibrium is reached, the final mixture contains six times as much 2-phosphoglycerate as 3-phosphoglycerate.  Which one of the following statements is most nearly correct, when applied to the reaction as written?  (R = 8.315 J/mol·K; T = 298 K)  3-Phosphoglycerate -> 2-phosphoglycerate

TLS Online TPP Program

#Question id: 405

#Part-B Specialized Branches in Biotechnology

When a mixture of glucose 6-phosphate and fructose 6-phosphate is incubated with the enzyme phosphohexose isomerase (which catalyzes the interconversion of these two compounds) until equilibrium is reached, the final mixture contains twice as much glucose 6-phosphate as fructose 6-phosphate.  Which one of the following statements is best applied to this reaction outlined below? (R = 8.315 J/mol·K; T = 298 K) Glucose 6-phosphate -> fructose 6-phosphate

TLS Online TPP Program

#Question id: 406

#Part-B Specialized Branches in Biotechnology

Hydrolysis of 1 M glucose 6-phosphate catalyzed by glucose 6-phosphatase is 99% complete at equilibrium (i.e., only 1% of the substrate remains). Which of the following statements is most nearly correct? (R = 8.315 J/mol·K; T = 298 K)