Question

Read the two statements, a and b.
Statement a. The number of mitochondria in a cell do not correspond to the function of the cell.
Statement b. Mitochondria are common to both plant and animal cells.
Choose the correct option from those given.

• A. Both the statements a and b are correct
• B. Both the statements a and b are wrong
• C. Statement a is correct, b is wrong
• D. Statement b is correct, a is wrong.

Answer 1

Answer: (D)

Statement b is correct, a is wrong.

• The mitochondria is a double-membraned cell organelle which is known as the powerhouse of the cell which is present in all eukaryotic cells (plants and animals).
  
• The inner membrane of the mitochondria is the site of the electron transport chain (aerobic respiration).
• Therefore, the cells which require more ATP molecules (cellular energy) have more mitochondria count.
• Eg- cells of the muscles and heart require more energy than the normal cells of the body (skin cells etc).
• So, the correct answer is 'Statement b is correct, a is wrong'.