In the investigation of the case a patient with defective proteins, the organelle that is most likely the cause would be the ribosome.
It cannot be any of lysosome, cell membrane, or the cytoplasm because:
- Lysosome functions as the digestive system of the cell. It digests and degrades dead cell components with the aid of certain enzymes.
- Cell membrane delimits the cell and act as a channel for the passage of materials in and out of the cell.
- The cytoplasm represents the entirety of the liquid content of the cell include the organelles it contains.
The ribosome is the organelle where protein synthesis takes place. Hence, a defect in the protein synthesized will most likely be caused by the ribosome itself.
More on the ribosome can be found here: https://brainly.com/question/241631
