Question

What will be in the place of ‘?’ in the given picture?

(a) Plasma layer

(b) Aqueous unstirred diffusion layer

(c) Lipid membrane

(d) Blood vessel

I got this question during an interview.

I need to ask this question from Drugs Absorption topic in chapter Absorption of Drugs of Drug Biotechnology

Answer 1

The correct choice is (b) Aqueous unstirred diffusion layer

For explanation I would say: The luminal fluid is not in direct contact with the membrane. There stands a barrier called as the aqueous unstirred diffusion layer which is interposed between the bulk fluid and the lipoidal membrane.