Changes

From Biolecture.org

Life is information

308 bytes added, 12:13, 7 September 2023
no edit summary
== Principles: What is life, information, and the universe? == === What is life? === <br/> Despite the work of life scientists over several centuries, a definitive answer to this deceptively simple question has been elusive.&nbsp;Life’s diverse properties include the following:  
#Life is complex and dynamic.&nbsp;All organisms are composed of the same set of chemical elements, primarily carbon, nitrogen, oxygen, hydrogen, sulfur, and phosphorus.&nbsp;Living processes, such as growth and development, involve thousands of chemical reactions in which vast quantities and varieties of vibrating and rotating molecules interact, collide, and rearrange into new molecules.
#Life is organized and self-sustaining. Living organisms are hierarchically organized systems
#Life is information-based. Organization requires information.
#Life adapts and evolves. All life on Earth has a common origin, with new forms arising from older forms.&nbsp;
 
Key concepts<br/> • All living organisms obey the chemical and physical laws.<br/> • Life is complex, dynamic, organized, and self-sustaining.<br/> • Life is cellular and information-based.<br/> • Life adapts and evolves. &nbsp;
 
=== Genetic information ===
All living organisms are information-processing systems. Their ultimate source of information is encoded in the nucleotide base sequence of DNA.
=== Universe ===
A universe consists of a system and its surroundings.
34
edits

Navigation menu