Question 20
Cell Structure and OrganisationAn organelle that is found in large number in the muscles of the heart is
- A.nucleus
- B.mitochondrion
- C.ribosome
- D.vacuole
Show the answer and explanation
Answer: B (mitochondrion)
Explanation
Heart muscle works non-stop and needs much energy, so its cells contain many mitochondria, where respiration releases energy.