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MDCAT Biology QUESTION #11232
Question 1
Which of the following cellular structures is NOT surrounded by a double membrane?
  • Nucleus
  • Mitochondrion
  • Lysosome✔️
  • Chloroplast
Correct Answer Explanation
The nucleus, mitochondria, and chloroplasts are all double-membrane bound organelles. Lysosomes are single-membrane bound organelles containing hydrolytic enzymes.