You Are Investigating a Particular Cell Type, and You Notice

Multiple Choice

You are investigating a particular cell type, and you notice that a protein normally found in the lysosome ends up being secreted from the cell. This appears to be the only thing wrong with these cells. Of the following conditions, which is the MOST likely cause of this defect in these cells?

A) The lysosome leaks the protein out of the cell.
B) One of the signal sequences on the lysosomal protein is defective.
C) Transport vesicles responsible for sorting in the cell are defective.
D) The pH of the lysosome is not low enough for the protein to remain in it.