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MDCAT Biology QUESTION #11236
Question 1
Which of the following is the correct sequence of organelles involved in the synthesis and secretion of a protein hormone?
  • RER $\to$ Golgi $\to$ Lysosome $\to$ Plasma membrane
  • Nucleus $\to$ RER $\to$ Golgi $\to$ Secretory vesicles
  • RER $\to$ Golgi $\to$ Secretory vesicles $\to$ Plasma membrane✔️
  • Free ribosomes $\to$ Golgi $\to$ Lysosome $\to$ Plasma membrane
Correct Answer Explanation
Protein hormones are synthesized on ribosomes attached to the RER, processed in the Golgi apparatus, packaged into secretory vesicles, and released by exocytosis through the plasma membrane.