TLS Online TPP Program

#Question id: 1080


 In the formation of biofilms, such as those forming on unbrushed teeth, cell signaling serves which function?

#Section 3: Genetics, Cellular and Molecular Biology
  1. formation of mating complexes

  2. aggregation of bacteria that can cause cavities

  3. secretion of substances that inhibit foreign bacteria

  4. digestion of unwanted parasite populations

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TLS Online TPP Program

#Question id: 401

#Section 4: Fundamentals of Biological Engineering

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

TLS Online TPP Program

#Question id: 402

#Section 2: General Biology

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

TLS Online TPP Program

#Question id: 402

#Section 4: Fundamentals of Biological Engineering

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

TLS Online TPP Program

#Question id: 403

#Section 2: General Biology

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: 403

#Section 4: Fundamentals of Biological Engineering

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

#Section 4: Fundamentals of Biological Engineering

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