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Which of the following correctly shows the sequence of organelles a protein would take if it being exported from the cell? (1 point)

1 Ribosome → Smooth ER → Vesicle → Cell Membrane → Vesicle → Rough ER

2 Ribosome→ Rough ER→ Vesicle → Golgi Apparatus → Vesicle → Cell Membrane

3 Ribosome → Vesicle → Rough ER → Vesicle → Golgi Apparatus → Cell Membrane

4 Smooth ER → Vesicle → Golgi apparatus → Rough ER → Vesicle → Nucleus

1 answer

The correct sequence of organelles for a protein being exported from the cell is:

2 Ribosome → Rough ER → Vesicle → Golgi Apparatus → Vesicle → Cell Membrane

Here’s a brief explanation of the process:

  1. Ribosome: Protein synthesis begins at the ribosome.
  2. Rough ER: Newly synthesized proteins enter the rough endoplasmic reticulum (Rough ER) for folding and modifications.
  3. Vesicle: The proteins are then packaged into vesicles that bud off from the Rough ER.
  4. Golgi Apparatus: The vesicles travel to the Golgi apparatus for further modification and sorting.
  5. Vesicle: After processing, the proteins are packaged into a new vesicle.
  6. Cell Membrane: Finally, the vesicle containing the protein fuses with the cell membrane, allowing the protein to be exported out of the cell.

The other options contain incorrect sequences or organelles.