Feedback Loops in Biological Systems
This worksheet explores positive and negative feedback loops, their components, and their roles in maintaining homeostasis in biological systems.
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Feedback Loops in Biological Systems
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Read each question carefully and provide your best answer. For multiple-choice questions, circle the correct option. For short answer questions, write your response in the space provided.
1. Which type of feedback loop works to maintain a relatively stable internal environment (homeostasis)?
Positive feedback loop
Negative feedback loop
Both positive and negative
Neither positive nor negative
2. Which of the following is an example of a positive feedback loop?
Regulation of body temperature
Blood glucose regulation
Childbirth contractions
Blood pressure regulation
3. In a negative feedback loop, the response the original stimulus.
4. The three main components of a feedback loop are the receptor, the control center, and the .
5. Positive feedback loops are common for maintaining homeostasis in the human body.
True
False
6. The process of blood clotting is an example of a negative feedback mechanism.
True
False
7. Briefly explain the difference between a positive and a negative feedback loop, providing one example for each in a biological context.
8. Analyze the feedback loop diagram below. Identify the components (stimulus, receptor, control center, effector, response) and determine if it represents a positive or negative feedback loop. Justify your answer.
