[Campbell Biology P.155] According to the cisternal maturation model, what is the primary me... | Practice Question

According to the cisternal maturation model, what is the primary mechanism by which materials move through the Golgi apparatus?

  • A: Vesicles continuously shuttle materials between static cisternae.
  • B: Golgi cisternae themselves mature and progress forward from the cis to the trans face, carrying their cargo.
  • C: Materials are directly transported through channels connecting different cisternae.
  • D: Enzymes are transported forward to different cisternae, while cargo remains stationary.

Explanation

The cisternal maturation model proposes that the Golgi cisternae themselves 'mature,' moving from the cis to the trans face while carrying and modifying their cargo as they move. This is distinct from the older model where vesicles move cargo between static cisternae.