The correct answer is C. Mitochondria.
Mitochondria are organelles found in all eukaryotic cells. They are responsible for energy production in the cell. Cellular respiration is the process by which cells convert glucose into energy. This process takes place in the mitochondria.
The centromere is a region of a chromosome that contains the kinetochore, which is involved in cell division. The nucleus is the control center of the cell. It contains the cell’s DNA. The Golgi complex is an organelle that is involved in the packaging and transport of proteins.
Here is a diagram of a mitochondrion:
Mitochondria are oval-shaped organelles that are about 1 micrometer in diameter. They have a double membrane, with the inner membrane being folded into cristae. The cristae increase the surface area of the inner membrane, which is where the reactions of cellular respiration take place.
The matrix is the space between the inner and outer membranes of the mitochondrion. It contains enzymes that are involved in the Krebs cycle and oxidative phosphorylation.
The Krebs cycle is a series of chemical reactions that take place in the matrix of the mitochondrion. These reactions convert pyruvate, a product of glycolysis, into acetyl-CoA. Acetyl-CoA is then used in the next step of cellular respiration, oxidative phosphorylation.
Oxidative phosphorylation is a series of chemical reactions that take place on the inner membrane of the mitochondrion. These reactions use oxygen to convert ADP and inorganic phosphate into ATP. ATP is the energy currency of the cell.
Cellular respiration is a complex process that takes place in the mitochondria. It is essential for the production of energy in the cell.