Which process is used to release insulin from pancreatic cells into the bloodstream?

• A. Pinocytosis
• B. Endocytosis
• C. Exocytosis
• D. Phagocytosis

Answer: (C)

Verified step by step guidance

1. Understand the context: Insulin is a hormone produced by the beta cells of the pancreas and needs to be released into the bloodstream to regulate blood sugar levels.
2. Identify the process: The release of substances from a cell into the extracellular space is typically done through a process called exocytosis.
3. Define exocytosis: Exocytosis is a cellular process where vesicles containing substances fuse with the plasma membrane to release their contents outside the cell.
4. Differentiate from other processes: Pinocytosis and phagocytosis are forms of endocytosis, where substances are brought into the cell, not released. Endocytosis is the opposite of exocytosis.
5. Conclude with the correct process: Since insulin needs to be released from the pancreatic cells into the bloodstream, exocytosis is the correct process for this action.