Which diagram is used to illustrate bulk transport?

• A. Plant cell diagram
• B. Animal cell diagram
• C. Plasma membrane diagram
• D. Bulk transport diagram

Answer: (D)

Bulk transport involves moving large particles or large amounts of material across the cell membrane using vesicles, a process that includes endocytosis and exocytosis. A diagram labeled for bulk transport would illustrate vesicles forming from the membrane, carrying material into or out of the cell, and fusing with the plasma membrane to release contents. It may also show vesicle budding, docking, and fusion with the membrane, highlighting how energy-driven vesicle transport moves big things rather than through diffusion or channels.

The other diagrams show general cell structure or the membrane itself, but they don’t specifically depict the vesicle-based steps of bulk transport. So a bulk transport diagram best communicates how this process works.