Feedback Mechanism_Unsolved Paper
Chapter: Control and Coordination | Topic: Feedback Mechanism
FEEDBACK MECHANISM_UNSOLVED PAPER
Topic: Feedback Mechanism
Q1.What is the main purpose of a feedback mechanism in the human body?
- To stop all body activities
- To maintain proper regulation of body functions
- To increase every hormone continuously
- To prevent communication between organs
Q2. Which situation best represents a negative feedback mechanism?
- A change causes further increase in the same change
- A change produces a response that helps reduce the original change
- A hormone is never released from a gland
- A stimulus produces no response
Q3. The regulation of blood glucose level by insulin is an example of a mechanism that helps the body:
- Maintain internal balance
- Stop digestion
- Increase body temperature continuously
- Prevent blood circulation
Q4. If the blood glucose level rises after a meal, which hormone is mainly involved in bringing it towards the normal level?
- Adrenaline
- Insulin
- Thyroxine
- Growth hormone
Q5. Which sequence best represents a basic feedback process?
- Change → detection → response → adjustment
- Response → change → no detection → adjustment
- Detection → permanent change → response stops
- Change → response → no regulation → detection
Q6. A feedback mechanism is important because it allows the body to:
- Maintain stable internal conditions
- Produce only one type of hormone
- Keep all body processes at maximum speed
- Eliminate the need for coordination between organs
Short questions
Q1. What is meant by a feedback mechanism? Why is it important for coordination in the human body?
Q2. What is negative feedback? How does it help maintain balance inside the body?
Q3. What happens to blood glucose regulation when the blood glucose level rises after eating a meal?
Q4. Why is it important for hormone levels in the body to be regulated rather than continuously increasing?
Q5. Imagine that you are studying for several hours in a classroom on a hot afternoon. Your body temperature begins to rise.
How does the body's regulatory system help prevent the temperature from increasing beyond a safe range?
Q6. How can a feedback mechanism prevent a body process from becoming excessive? Give one suitable biological example.
Q1. Explain the role of feedback mechanisms in maintaining a stable internal environment in the human body. Describe the general sequence involving a change, detection, response, and correction.
Q2. Explain how feedback regulation is involved in maintaining the blood glucose level after a person consumes a carbohydrate-rich meal. Include the roles of the pancreas, insulin, body cells, and blood glucose level in your explanation.
Q3. A person's body continuously adjusts its internal conditions even when the surroundings change. Explain how feedback mechanisms help regulate body functions. Discuss why such regulation is necessary for the proper functioning of cells and organs.
Q1. After eating a large meal, a person's blood glucose level rises above its usual level.
a) Which hormone is expected to be involved in regulating this change?
b) What general effect should the feedback response have on the raised blood glucose level?
Q2. Suppose a feedback system fails to reduce a body condition after it has moved above its normal range.
a) What could happen if this condition continues unchecked?
b) Why is timely feedback important for maintaining internal balance?
Q3. During a very hot summer day in India, a person spends several hours outdoors. The body detects changes in its internal conditions and activates regulatory responses.
a) Why is feedback regulation important in such a situation?
b) What could be the consequence if the body's regulatory response were unable to restore normal conditions?