Question

a form of bulk transport in which materials are transported from the inside to the outside of the cell in membrane - bound vesicles that fuse with the plasma membrane. options: diffusion, endocytosis, osmosis, exocytosis

Explanation:

To solve this, we analyze each option:

• Diffusion: Passive transport of substances down concentration gradient, no vesicles. Eliminate.
• Endocytosis: Transport of materials into the cell (inside - > cell), not outside. Eliminate.
• Osmosis: Movement of water across a semi - permeable membrane, no vesicles. Eliminate.
• Exocytosis: Involves vesicles fusing with the plasma membrane to transport materials from inside the cell to outside. This matches the description.

Answer:

D. Exocytosis