What organelles are found in greater numbers in cells that have high energy demands?

Cells that have high energy demands, such as muscle cells or cells in the liver, contain a greater number of mitochondria. Mitochondria are often referred to as the powerhouse of the cell because they are responsible for producing adenosine triphosphate (ATP), the primary energy currency of the cell. The process of cellular respiration occurs within mitochondria, where glucose and oxygen are converted into ATP, carbon dioxide, and water.

In energy-demanding cells, the higher concentration of mitochondria allows for increased ATP production to meet the needs of the cell for various metabolic functions, muscle contraction, and other energy-requiring activities. This adaptation is crucial for maintaining the cell's energy supply under conditions where energy consumption is significantly high.

Other organelles, such as ribosomes, nuclei, and lysosomes, perform essential functions within the cell but are not specifically tied to energy production in the same way that mitochondria are. Ribosomes are involved in protein synthesis, nuclei contain genetic material and regulate cellular activities, and lysosomes are involved in waste processing and digestion of cellular debris. Their presence is important but does not correlate directly with energy demands in the same manner as mitochondria.