Exam 2 - Diffusion

Question 1

—“In relative terms, diffusion is a slow process”. This statement is:

—A.True

B.False

Answer 1

—A.True

Question 2

—“The diffusion of a drug through a polymeric membrane involves dissolution of the drug in the matrix of the membrane”. This statement is:

—A.True

B.False

Answer 2

—A.True

Question 3

—Is mostly influenced by the:

—A.Relative size of the penetrating molecules

B.Diameter and shape of the pores

C.A and B

D.None of the above

Answer 3

C.A and B

Question 4

—The diffusing molecules (diffusants):

—A.Pass through the tortuous pores formed by the overlapping strands of polymer

B.Dissolve in the polymer matrix and pass through the film by simple diffusion

C.Both A and/or B may be correct

Answer 4

C.Both A and/or B may be correct