Question

1. which characteristic of the plasma membrane is illustrated in this drawing? * the light circle (on the left) is passing through while the dark grey circle (on the right) is not. fluid mosaic construction selective permeability impermeability to water phospholipid bilayer

Explanation:

The plasma membrane allows some substances (the light - colored circle) to pass through while preventing others (the dark - grey circle) from passing. This is the definition of selective permeability, the ability of a membrane to regulate the passage of substances across it. The fluid mosaic model describes the structure of the membrane as a fluid combination of lipids, proteins, and carbohydrates. Impermeability to water is incorrect as water can pass through the membrane via aquaporins in many cases. The phospholipid bilayer is the structural basis of the membrane but does not describe the differential passage of substances shown.

Answer:

B. Selective permeability