sentence2_structure: all chemical reactions<>take<>place<>within an organism$$$The sum of all chemical reactions<>is known<>as metabolism
sentence1: Metabolism is the sum of all the chemical reactions that take in and transform energy and materials from the environment.
sentence2: The sum of all chemical reactions that take place within an organism is known as metabolism.
question: The sum of all chemical reactions that take place within an organism is known as