Question

the nucleus of a single - celled organism becomes damaged. in a complex organism, this would be similar to which body system becoming damaged? a. nervous system b. excretory system c. respiratory system d. cardiovascular system

Explanation:

The nucleus is the control - center of a single - celled organism, containing genetic material and regulating cell activities. In a complex organism, the nervous system is the control - center, coordinating and regulating various body functions.

Answer:

A. nervous system