TLS Online TPP Program

#Question id: 1116


What is a primary function of transcription factors?

#XL - Q Biochemistry
  1. They regulate the synthesis of DNA in response to a signal.

  2. They convert ATP into cAMP.

  3. They control gene expression.

  4. They regulate the release of calcium from the endoplasmic reticulum.

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TLS Online TPP Program

#Question id: 403

#XL - S Microbiology

For the reaction A -> B, DG'° = –60 kJ/mol.  The reaction is started with 10 mmol of A; no B is initially present.  After 24 hours, analysis reveals the presence of 2 mmol of B, 8 mmol of A. Which is the most likely explanation?

TLS Online TPP Program

#Question id: 404

#XL - S Microbiology

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: 407

#XL - Q Biochemistry

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: 407

#XL - S Microbiology

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: 408

#XL - Q Biochemistry

Which of the following compounds has the largest negative value for the standard free-energy change (DG'°) upon hydrolysis?

TLS Online TPP Program

#Question id: 408

#XL - S Microbiology

Which of the following compounds has the largest negative value for the standard free-energy change (DG'°) upon hydrolysis?