D3.3.2—Negative feedback loops
Negative feedback returns a changed variable toward its set point, while positive feedback amplifies a change for a short time.
- Syllabus
- First assessment 2025
- Objective
- D3.3.2
- Level
- SL
Exam analysis
Chance of appearing1%of analysed past papers
Latest appearanceNovember 2025
Most common paperPaper2
Typical marks4
Common command terms
- Discuss
Recent exam appearances
November 2025Paper2 ["SL"] · TZ16(a)[ 4 ]D3.3.2—Negative feedback loops
Practice this objective
Coverage 2025–2025 · Updated 16 Jul 2026
Concept essentials
- Negative feedback opposes the original change.
- Positive feedback amplifies a change instead of restoring equilibrium.
- Homeostasis mainly depends on negative feedback loops.