Cell Signals & Feedback — Drills · Grade 10 Science
Chapter: Body Systems, Signals & HomeostasisWhat these drills covers
By the end of Cell Signals & Feedback you should be able to:
- I can model how a signal produces a response in a target cell.
- I can distinguish the direction of feedback from whether an outcome is desirable.
2 questions, written answer, each with a worked explanation.
Vocabulary used: receptor, target cell, negative feedback.
Problem 1
List the parts needed to explain a feedback loop.
Answer and explanation
Changing condition, detection, signal/response, and how the response changes the original condition.
Problem 2
A signal is present but one cell does not respond. Suggest two testable explanations.
Answer and explanation
The cell may lack the receptor or have a disruption in downstream machinery. Test receptor presence and response to pathway activation.