Question

What is feedback in a system?A. the regulation of a system by the outputB. the behaviors of the different components of a systemC. the balance of competing factors in a systemD. the definition of what is part of the system and what isn't

Answer 1

The correct option is A, feedback is the control of a biological reaction by the end products of that reaction. One example is regulation of body temperature: if temperature exeeds 37°C, a signal is sent to temperature regulatory center in brain so the glands begin to sweat, that makes temperature lower. This is an example of negative feedback.