The diagram models a regulatory loop in which a downstream output reduces the activity of the upstream stimulus.
This diagram represents which type of feedback?
- A
Signal transduction without feedback
- Bcheck_circle
Negative feedback that maintains homeostasis
- C
Positive feedback that amplifies the response
- D
Apoptotic feedback
Explanation
When the output inhibits the upstream stimulus, the system tends toward a setpoint—this is negative feedback, the basis of homeostasis.