A loss-of-function mutation in Wnt would have a phenotype similar to a

a. gain-of-function mutation in GSK-3.                    

b. gain-of-function mutation in β-catenin.

c. loss-of-function mutation in GSK-3.                     

d. loss-of-function mutation in β-catenin.

TLS Online TPP Program

#Question id: 366

#Section 4: Fundamentals of Biological Engineering

What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-10 M?

TLS Online TPP Program

#Question id: 367

#Section 4: Fundamentals of Biological Engineering

1.0 × 10^−4 mole of H+ (as HCl) is added to 1.0 liter of pure water. Determine the final pH of the solution.

TLS Online TPP Program

#Question id: 368

#Section 4: Fundamentals of Biological Engineering

Which of the following is true about the properties of aqueous solutions?

TLS Online TPP Program

#Question id: 369

#Section 4: Fundamentals of Biological Engineering

Calculate the pH of a 2.0 L solution containing 10 mL of 5 M acetic acid and 10 mL of 1 M sodium acetate. (pKa = 4.76)

TLS Online TPP Program

#Question id: 370

#Section 4: Fundamentals of Biological Engineering

Which of the following statements is true about buffer solutions?

TLS Online TPP Program

#Question id: 371

#Section 4: Fundamentals of Biological Engineering

How many milliliters of a 2.0 M solution of boric acid must be added to 600 mL of a solution of 10 mM sodium borate in order for the pH to be 9.45? (pKa of boric acid = 9.24)