Definition

Noun: A cellular organelle consisting of a stack of flattened, membrane-bound sacs (cisternae) that modifies, sorts, and packages proteins and lipids for secretion or for delivery to other organelles within the cell. It is a crucial part of the eukaryotic cell's endomembrane system.

Usage

The term "Golgi apparatus" is used to refer to this specific organelle in cell biology. It is always treated as a singular noun, though it is sometimes called the "Golgi complex" or "Golgi body."

Examples

• Under the microscope, the Golgi apparatus appears as a series of stacked membranes near the nucleus.
• Proteins synthesized by the endoplasmic reticulum are transported to the Golgi apparatus for further processing.
• The primary function of the Golgi apparatus is to modify and package cellular products.

Advanced Usage

• "Golgi apparatus function": Refers to the biological processes the organelle performs, such as glycosylation (adding sugar molecules) or sorting macromolecules.
  • Researchers are studying Golgi apparatus function in relation to certain genetic diseases.
• "Vesicle budding from the Golgi apparatus": Describes the process where small membrane-bound sacs pinch off from the Golgi to transport materials.
  • The formation of secretory vesicles involves vesicle budding from the Golgi apparatus.

Variants and Related Words

• Golgi complex (n): A synonym for Golgi apparatus.
• Golgi body (n): A synonym for Golgi apparatus, often used when referring to multiple discrete stacks within a cell.
• cis-Golgi network (n): The receiving face of the Golgi apparatus, which accepts vesicles from the endoplasmic reticulum.
• trans-Golgi network (n): The shipping face of the Golgi apparatus, which dispatches vesicles to their final destinations.
• Golgi (adj): An informal shorthand used attributively (e.g., Golgi vesicles, Golgi staining technique).

Synonyms

• Golgi complex
• Golgi body

Related Phrases

• Secretory pathway: The cellular route (ER → Golgi apparatus → vesicles → cell exterior) in which the Golgi is a central component.
  • The hormone is released via the secretory pathway, which requires the Golgi apparatus.
• Post-translational modification: A key type of processing that occurs within the Golgi apparatus.
  • Many proteins undergo essential post-translational modification in the Golgi apparatus.

Noun

1. a netlike structure in the cytoplasm of animal cells (especially in those cells that produce secretions)