2F - The Protein Secretory Pathway Flashcards
exocytosis
A type of bulk transport that moves large substances out of a cell.
vesicle
A small fluid-filled organelle enclosed in a phospholipid membrane that transports substances around the cell.
bulk transport
A type of active transport that uses vesicles to move large molecules or groups of molecules into or out of the cell.
active transport
The movement of molecules across a semipermeable membrane requiring an energy input.
secretory products
The substances inside a vesicle that are being transported out of the cell.
plasma membrane
The phospholipid bilayer with embedded proteins which separates the intracellular environment from the extracellular environment.
rough endoplasmic reticulum (RER)
a membranous organelle shaped like a series of connected, flattened cylinders that fold and transports proteins via its attached ribosomes.
Golgi apparatus
An organelle made of flattened sacs of membrane involved in modifying, sorting and packaging proteins. AKA Golgi body or Golgi complex.
mitochondrion (mitochondria pl.)
A double-membrane-bound organelle that is the site of the second and third stages of aerobic respiration.
