Multicellular organisms utilize chemical communication because it overcomes the limitations of electrical impulses, allowing for widespread and continuous signaling to coordinate various cellular activities in the body.
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Most multicellular organisms resort to chemical communication between cells due to the versatility and specificity of chemical signaling. Chemical signals, such as hormones and neurotransmitters, enable precise and targeted communication over long distances within the organism. This mode of communication allows for coordination of diverse physiological processes, including growth, development, metabolism, and responses to environmental stimuli. Chemical signaling permits cells to transmit information with temporal and spatial control, facilitating intricate regulatory mechanisms. Unlike electrical signals, chemical messengers can navigate through complex tissues and reach distant target cells, providing multicellular organisms with a highly adaptable and efficient means of intercellular communication.