TLS Online TPP Program

#Question id: 4326


Which of the following is an example of post-transcriptional control of gene expression?

#Part-A Aptitude & General Biotechnology
  1. the addition of methyl groups to cytosine bases of DNA

  2. the binding of transcription factors to a promoter

  3. the removal of introns and alternative splicing of exons

  4. gene amplification contributing to cancer

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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?

TLS Online TPP Program

#Question id: 411

#Part-A Aptitude & General Biotechnology

The reaction ATP -> ADP + Pi is an example of a reaction.