TLS Online TPP Program

#Question id: 8926


Sponges and cnidarians are among the fossilized animals found in both the Ediacara Hills and the Burgess Shale from the Rocky Mountains of British Colombia. This observation requires that

#Part-A Aptitude & General Biotechnology
  1. ancestral sponges and cnidarians had formerly been terrestrial animals.
  2. North America and Australia were united to each other about 550 million years ago (mya).
  3. land that now comprises the Ediacara Hills and the Rocky Mountains was underwater about 550 million years ago.
  4. only sponges and cnidarians existed at the time the sediments were deposited.
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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)

TLS Online TPP Program

#Question id: 407

#Part-B Specialized Branches in Biotechnology

The reaction A + B -> C has a DG'° of –20 kJ/mol at 25° C.  Starting under standard conditions, one can predict that:

TLS Online TPP Program

#Question id: 409

#Part-B Specialized Branches in Biotechnology

For the following reaction,DG'° = +29.7 kJ/mol. L-Malate + NAD+ -> oxaloacetate + NADH + H+ The reaction as written:

TLS Online TPP Program

#Question id: 410

#Part-B Specialized Branches in Biotechnology

For the reaction A -> B, the Keq' is 10^4.  If a reaction mixture originally contains 1 mmol of A and no B, which one of the following must be true?