Final answer:
A cell with many mitochondria typically requires more energy for high activity levels, like muscle cells that need to contract, which is why they contain a high concentration of mitochondria.
Step-by-step explanation:
When a cell has an abundance of mitochondria, it indicates that the cell is more active and requires more energy. This is because mitochondria are known as the "power plants" of the cell, playing a critical role in the production of ATP (adenosine triphosphate), the cell's main energy carrier. Cells such as sperm cells and muscle cells, which are highly active and need substantial amounts of energy, have many mitochondria to meet their energy demand. For example, muscle cells contain a very high concentration of mitochondria because they need a lot of energy to contract.A good example of cells that have an abundance of mitochondria are sperm cells and muscle cells, as they need a lot of energy to perform their functions.