Which cell structure is responsible for providing energy for cells?

The mitochondria are known as the powerhouse of the cell because they play a crucial role in producing energy in the form of adenosine triphosphate (ATP). They accomplish this through a process known as cellular respiration, which involves the breakdown of glucose and other nutrients in the presence of oxygen. This process generates ATP, which cells use to power various metabolic activities, making mitochondria essential for maintaining cellular functions.

Other cell structures have their unique functions that are essential for cell health and overall operation. The nucleus is responsible for storing genetic material and coordinating cellular activities like growth and reproduction. Ribosomes play a vital role in protein synthesis by translating messenger RNA into proteins. Meanwhile, the endoplasmic reticulum is involved in the synthesis of proteins and lipids and serves as a transport system for molecules within the cell. Each of these structures contributes to cell function but does not provide energy in the same manner as mitochondria.