Feedback Regulation in Biological Systems
Biology ⇒ Biological Systems and Homeostasis
Feedback Regulation in Biological Systems starts at 9 and continues till grade 12.
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Describe one example of positive feedback in the human body.
Describe the difference between positive and negative feedback with an example for each.
Describe the role of insulin in feedback regulation of blood glucose levels.
Describe what would happen if negative feedback mechanisms failed in the body.
Explain how feedback regulation is involved in maintaining water balance in the body.
A person exercises and their body temperature rises. The body responds by increasing sweat production. What type of feedback is this? (1) Positive, (2) Negative, (3) No feedback, (4) Neutral.
A person is exposed to cold temperatures. Which feedback mechanism is activated to maintain body temperature? (1) Positive feedback, (2) Negative feedback, (3) No feedback, (4) Neutral feedback.
A person’s blood pressure increases. The body responds by causing blood vessels to widen, lowering blood pressure. What type of feedback is this? (1) Positive, (2) Negative, (3) No feedback, (4) Neutral.
A person exercises and their body temperature rises. The body responds by increasing sweat production. What type of feedback is this? (1) Positive, (2) Negative, (3) No feedback, (4) Neutral.
A person is exposed to cold temperatures. Which feedback mechanism is activated to maintain body temperature? (1) Positive feedback, (2) Negative feedback, (3) No feedback, (4) Neutral feedback.
A person’s blood pressure increases. The body responds by causing blood vessels to widen, lowering blood pressure. What type of feedback is this? (1) Positive, (2) Negative, (3) No feedback, (4) Neutral.
When blood sugar rises after eating, which hormone is released to lower it? (1) Glucagon, (2) Insulin, (3) Adrenaline, (4) Thyroxine.
Fill in the blank: In a feedback system, the __________ compares the actual value to the set point and sends out signals to correct any deviation.
Fill in the blank: In negative feedback, the response __________ the original stimulus.
Fill in the blank: The __________ is the part of a feedback system that brings about a change to return the system to its set point.
Fill in the blank: The hormone __________ is involved in the positive feedback loop during childbirth.
True or False: Feedback regulation can involve both the nervous and endocrine systems.
True or False: Feedback regulation is only important during times of stress or illness.
True or False: Feedback regulation only occurs in animals.
True or False: Homeostasis can be maintained without feedback regulation.
