Which sentence supports the statement that complex, multicellular organisms are made up of specialized cells that each perform different functions for the body? a. human liver cells make proteins that promote homeostasis that neurons do not. b. different species of bacteria have different shapes and structures to their cells. c. the dna in the cell nucleus of chimpanzees and humans are 98% identical. d. prokaryotes do not have nuclei, but they can still carry out the basic functions of life.