Pieces of membranes frequently move from one area of a cell to another, but never as just flat patches, only as vesicles. Study Figure 3-9, and then draw examples of endocytosis and exocytosis using different colors for the two sides of the membranes. Notice that the black side of the membrane bilayer always touches the blue part of the cell in Figure 3-9. Can you come up with any type of vesicle fusion that would result in the black side of the membrane touching the green part of the cell?

Figure 3-9

Transcribed Image Text:

a1 a2 a3 (A) -Vesicle Lumen Growing membrane Vesicle forming (B) OO No fusion c1 (C) Vesicle contents Vesicle membrane now part of plasma membrane Plasma membrane