Which of the following cell organelles is the site for the production of ATP?

Step 1: Analyze the question The question asks which organelle is the main site of ATP production. ATP (adenosine triphosphate) is the energy currency of the cell.

Step 2: Explain the concept Cells release energy from food (like glucose) through cellular respiration. The later stages of aerobic respiration, the Krebs cycle and the electron transport chain, take place in the mitochondria. Most of the cell's ATP is made here, which is why mitochondria are called the "powerhouses of the cell."

Step 3: Evaluate each option

• A. Lysosome: Contains digestive enzymes that break down waste and worn-out cell parts. It does not produce ATP.
• B. Nucleus: Controls cell activities and holds the genetic material (DNA). It does not produce ATP.
• C. Mitochondrion: Site of aerobic respiration, where most ATP is produced. ✔
• D. Ribosome: Site of protein synthesis. It uses energy but does not produce ATP.

Step 4: Answer The correct option is C. Mitochondrion.

Tip: Link "Mitochondrion" with "Make energy." Also remember: ribosome = protein synthesis, lysosome = digestion, nucleus = control center. Cells with high energy needs, like muscle cells, have many mitochondria. WAEC often tests this idea.