Feedback Loops in Biology
Explore the concepts of negative and positive feedback loops in biological systems with this comprehensive worksheet for Grade 9 Science.
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Feedback Loops in Biology
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Read each question carefully and provide your best answer. Some questions may require critical thinking and application of biological concepts.
1. What is the primary goal of a negative feedback loop?
To amplify a change in the body
To maintain homeostasis
To initiate a rapid response to a stimulus
To cause a deviation from the set point
2. Which of the following is an example of a positive feedback loop?
Regulation of blood glucose by insulin
Maintenance of body temperature
Childbirth contractions
Blood pressure regulation
3. The process by which organisms maintain a stable internal environment is called .
4. In a negative feedback loop, the response the original stimulus.
5. Describe the main difference between a negative feedback loop and a positive feedback loop. Provide an example for each.
6. Observe the diagram below, which illustrates a negative feedback loop. Identify and label the components (stimulus, receptor, control center, effector, response) as they would apply to the regulation of body temperature.
7. Positive feedback loops are more common for maintaining homeostasis in the human body than negative feedback loops.
True
False
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