What is a function performed by cells necessary for life?

Using energy is a fundamental function performed by cells that is necessary for life. Cells require energy to carry out essential processes, such as growth, repair, reproduction, and maintaining homeostasis. This energy is typically derived from nutrients that are metabolized to produce adenosine triphosphate (ATP), which provides the energy required for various cellular activities.

For example, cells utilize energy for active transport, enabling them to move substances across their membranes against concentration gradients. They also use energy for biochemical reactions that support cellular functions, such as protein synthesis and cell division. Without the ability to use energy efficiently, cells would not be able to perform their vital functions, which would ultimately jeopardize the organism's survival.

While consuming energy, having a variety of cell types, and membrane formation are also important in their contexts, they do not directly highlight the cellular ability to utilize energy, which is crucial for sustaining life.