What is true about the relationship between cells and the organisms they are part of? a. cells make up the basic structure of an organism, and they perform basic life functions for the organisms. b. cells make up the basic structure of an organism, but they do not perform basic life functions for the organisms. c. cells perform basic life functions for the organisms, but they do not make up the basic life structure of an organism. d. cells do not make up the basic structure of an organism, and they do not perform basic life functions for the organisms.