Given a scientific question, generate a correct answer to it.
--------
Question: The urea cycle, a set of biochemical reactions that produces urea from ammonium ions to prevent toxicity, occurs to some extent in the kidney, but primarily in what organ?

Answer: liver

Question: Where do lancelets live?

Answer: shallow ocean water

Question: The type of vesicle transport that moves a substance out of the cell is called?

Answer:
exocytosis