Question

Which describes a difference between a positive and a negative feedback loop?

The output of a system stimulates another cycle of the system only in a positive feedback loop.

The output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.

The output of a system maintains conditions around a set point only in a positive feedback loop.

The output of a system signals the system to disregard the stimulus only in a negative feedback loop.

Answer 1

"The output of a system stimulates another cycle of the system only in a positive feedback loop."

Explanation: In positive feedback the output enhances or amplifies the original stimulus (a self‑reinforcing cycle). Negative feedback opposes the stimulus to return conditions toward a set point and does not stimulate further cycles.