What do you mean by bulk transport of materials ? Name two special processes involved for such transfer across plasma membrane ?

Explanation

### Step-by-Step Solution:

1. **Definition of Bulk Transport**:
- Bulk transport refers to the movement of large quantities of materials, such as macromolecules, lipids, and solid food particles, across the plasma membrane of a cell. This process allows cells to transport substances that are too large to pass through the membrane via diffusion or active transport.

2. **Processes Involved in Bulk Transport**:
- There are two main processes involved in bulk transport:
- **Endocytosis**: This is the process by which cells engulf external substances, bringing them into the cell. During endocytosis, the plasma membrane invaginates (folds inward) to form a pocket around the material, which then pinches off to form a vesicle inside the cell.
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