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MDCAT Biology QUESTION #4260
Question 1
A student observed a boundary in both plant and animal cells that controls entry and exit of substances. Which of the following structures is likely being observed?
  • Mitochondria
  • Golgi apparatus
  • Plasma membrane✔️
  • Cell wall
Correct Answer Explanation
The plasma membrane is present in both plant and animal cells and is selectively permeable, controlling the movement of substances in and out of the cell.