Researchers have been able to study the pathway of a secreted protein by ʺtaggingʺ it with a fluorescent marker. Using this method, you would observe fluorescence moving from the ER to which organelle?
A) Mitochondria
B) Plasma membrane
C) Lysosome
D) Nuclear membrane
E) Golgi apparatus

Question

Quizplus · Accepted Answer

Secreted proteins are synthesized in the endoplasmic reticulum (ER) and then transported to the Golgi apparatus for further processing and sorting. The tagging of a protein with a fluorescent marker allows researchers to visually track its pathway, and in the case of a secreted protein, fluorescence would be observed moving from the ER to the Golgi apparatus before it is directed to its final destination, such as the plasma membrane or outside the cell.

Researchers Have Been Able to Study the Pathway of a Secreted