Effector — Science definition
A muscle, gland, or organ that carries out the response that restores balance.
Where it is taught
- Homeostasis & Feedback — Body Systems, Signals & Homeostasis, Life Science: Biology, Grade 10
In use
The control center then signals an effector to act, and the effector's response pushes the condition back toward the set point.
Homeostasis & Feedback
Questions using effector
Problem 1
Answer and explanation
The intended response is negative feedback because it opposes the deviation. Delayed sensing/response and changing inputs can produce overshoot; a rising value alone does not define positive feedback.
The intended response is negative feedback because it opposes the deviation. Delayed sensing/response and changing inputs can produce overshoot; a rising value alone does not define positive feedback.
Response criteria
- Use the stated measurements or conditions, with correct units.
- Connect the result to the biological mechanism or evidence relationship.
- Identify the assumption, model limit or further evidence requested.
Problem 2
Answer and explanation
The intended response is negative feedback because it opposes the deviation. Delayed sensing/response and changing inputs can produce overshoot; a rising value alone does not define positive feedback.
The intended response is negative feedback because it opposes the deviation. Delayed sensing/response and changing inputs can produce overshoot; a rising value alone does not define positive feedback.
Response criteria
- Use the stated measurements or conditions, with correct units.
- Connect the result to the biological mechanism or evidence relationship.
- Identify the assumption, model limit or further evidence requested.
Problem 3
- amplifies the original change
- opposes the original change
- has no effect on the variable
- replaces the receptor
Answer and explanation
opposes the original change
Negative feedback produces a response that counteracts the detected deviation, returning the variable toward its set point.