I think it is information because the relationship between life and information is fundamental and closely linked. Life, at its core, is based on systems that store, process, and utilize information to survive, reproduce, and evolve. Below I mention some elements that depend on the information:

Reproduction: The ability to reproduce is fundamental to the continuity of life. Through reproduction, organisms can produce offspring and transmit genetic information to future generations, allowing the perpetuation of the species.

Metabolism: Metabolism refers to the chemical reactions that take place within an organism to maintain its vital functions. These processes involve obtaining, using, and storing energy, as well as synthesizing and degrading essential molecules. Metabolism is essential for the maintenance and growth of organisms.

Homeostasis: The ability to maintain a stable internal environment is crucial for life. Organisms must regulate their internal conditions, such as temperature, pH, nutrient concentrations, and water balance, to ensure proper functioning of cells and tissues.

Complex organization: Life is characterized by complex organization at different levels, from individual cells to whole organisms. Organization includes specialized structures, such as organs and systems, that perform specific functions and work together for the survival and proper functioning of the organism.

Response to the environment: Living organisms are able to respond to stimuli from the external environment and adjust their behavior, physiology and morphology as a function of these stimuli. This responsiveness allows organisms to adapt to environmental changes and optimize their chances of survival.

Recognizing a biosignature depends on the use of the five senses of the human being. Since there is a life form that is undetectable through these senses, shouldn’t we look for other methods of identification?