Question

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

Answer 1

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.