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MDCAT Biology QUESTION #7779
Question 1

Steroid hormone synthesis occurs mainly in which organelle?

  • Endoplasmic Reticulum (Smooth ER)✔️
  • Golgi apparatus
  • Lysosome
  • Ribosomes
Correct Answer Explanation

Smooth ER contains enzymes for lipid and steroid synthesis (e.g., in testes, ovaries, adrenal cortex). Rough ER makes proteins; Golgi modifies; lysosomes digest.