Cells consume food particles that are too large to pass through protein channels through a process called endocytosis. This involves the cell membrane engulfing the particle and forming a vesicle, a small membrane-bound sac, around it.

Here's a breakdown:

1. Recognition: The cell recognizes the large food particle, often through specific receptors on its surface.

2. Invagination: The cell membrane invaginates or folds inwards, creating a pocket around the particle.

3. Vesicle Formation: The invagination closes in on itself, pinching off to form a sealed vesicle containing the food particle.

4. Movement: The vesicle, now detached from the cell membrane, travels through the cytoplasm to a lysosome.

5. Digestion: Lysosomes contain powerful enzymes that break down the food particle into smaller molecules that can be used by the cell.

There are two main types of endocytosis:

* Phagocytosis: This involves the engulfment of solid particles, such as bacteria or debris. It's often used by specialized cells like macrophages.

* Pinocytosis: This involves the engulfment of liquid particles, including dissolved nutrients. It's a more general process used by most cells.

In summary:

* Endocytosis is the process by which cells engulf large particles.

* Phagocytosis is the engulfment of solid particles.

* Pinocytosis is the engulfment of liquid particles.

This process allows cells to take in large nutrients that wouldn't otherwise be able to pass through the cell membrane.