The correct answer is D. Mitochondrion.
Mitochondria are organelles found in eukaryotic cells that are responsible for cellular respiration. Cellular respiration is the process by which cells convert glucose into energy. This process takes place in the mitochondria, which are also known as the “powerhouses of the cell.”
Microtubules are protein filaments that form the cytoskeleton of the cell. The cytoskeleton is a network of fibers that gives the cell its shape and helps it to move.
Ribosomes are organelles that are responsible for protein synthesis. Proteins are essential for the structure and function of the cell.
The Golgi apparatus is an organelle that is responsible for packaging and exporting proteins.
In conclusion, the correct answer is D. Mitochondrion. Mitochondria are organelles found in eukaryotic cells that are responsible for cellular respiration. Cellular respiration is the process by which cells convert glucose into energy. This process takes place in the mitochondria, which are also known as the “powerhouses of the cell.”