Which of the following is NOT a true statement regarding exocytosis?

• A. It forms intracellular vesicles from inward folding of the plasma membrane.
• B. It requires fusion of vesicles with the plasma membrane.
• C. It secretes large molecules out of the cell.
• D. It is responsible for removing large waste particles that cannot be recycled by the cell.

Answer: (A)

Verified step by step guidance

1. Understand the process of exocytosis: Exocytosis is a cellular process where materials are exported out of the cell via vesicles. These vesicles fuse with the plasma membrane to release their contents outside the cell.
2. Identify the key characteristics of exocytosis: It involves the fusion of vesicles with the plasma membrane, secretion of large molecules, and removal of waste particles that cannot be recycled.
3. Analyze each statement: Compare each statement with the known characteristics of exocytosis to determine which one does not align.
4. Evaluate the statement about vesicle formation: Exocytosis does not involve the formation of vesicles from inward folding of the plasma membrane; this is a characteristic of endocytosis.
5. Conclude which statement is false: The statement about forming intracellular vesicles from inward folding of the plasma membrane is not true for exocytosis, as it describes endocytosis instead.