The correct sequence of organelles for protein export from the cell is as follows:
1. Endoplasmic Reticulum (ER):
- Proteins destined for the cell membrane or secretion are synthesized by ribosomes bound to the ER membrane.
2. Golgi Apparatus:
- After synthesis, these proteins move to the Golgi apparatus.
- The Golgi apparatus modifies and sorts proteins, preparing them for secretion or transport to other cellular compartments.
3. Vesicles:
- Golgi apparatus packages the modified proteins into vesicles.
4. Plasma Membrane:
- The vesicles fuse with the plasma membrane, releasing the proteins outside the cell by exocytosis.
So, the correct sequence of organelles for protein export is: ER -> Golgi Apparatus -> Vesicles -> Plasma Membrane.
Which of the following correctly shows the sequence of organelles a protein would take if it were being exported from the cell?
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