Final answer:
Muscle cells contain many mitochondria because they need a lot of energy to contract, while white blood cells contain many lysosomes to help eliminate harmful substances in the cell.
Step-by-step explanation:
In keeping with our theme of form following function, it is important to point out that muscle cells have a very high concentration of mitochondria because muscle cells need a lot of energy to contract.
Mitochondria are the 'powerhouses' or 'energy factories' of a cell, responsible for producing adenosine triphosphate (ATP), the cell's main energy-carrying molecule. Cells that need lots of energy have lots of mitochondria.
White blood cells, on the other hand, contain many lysosomes because lysosomes are responsible for breaking down waste material and foreign substances in the cell. White blood cells play a crucial role in the immune system and need a large number of lysosomes to help eliminate pathogens and other harmful agents.