Which means of particle transport is shown in the figure below?

• A. Exocytosis
• B. Endocytosis
• C. Facilitated diffusion
• D. Simple diffusion

Answer: (B)

Verified step by step guidance

1. Observe the sequence of images: The first image shows a particle outside the cell, the second image shows the cell membrane engulfing the particle, and the third image shows the particle inside the cell.
2. Identify the process: The sequence of images depicts a process where the cell membrane surrounds and takes in the particle, forming a vesicle inside the cell.
3. Understand the concept: This process is known as endocytosis, where the cell membrane engulfs external material to bring it into the cell.
4. Differentiate from other processes: Exocytosis involves expelling material from the cell, facilitated diffusion involves transport through a membrane protein without energy, and simple diffusion involves movement from high to low concentration without energy or proteins.
5. Conclude the identification: Based on the images, the process shown is endocytosis, as it involves the engulfing and internalization of the particle by the cell membrane.