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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A person eats a meal high in sugar. Describe the feedback mechanism that regulates their blood glucose level.
A person is exposed to cold temperatures. Describe the feedback response that helps maintain their body temperature.
Describe a biological example of a positive feedback mechanism.
Describe how feedback regulation is involved in the control of water balance in the human body.
Describe the difference between negative and positive feedback mechanisms in biological systems.
Describe the role of feedback regulation in the menstrual cycle.
A person eats a meal high in sugar. Describe the feedback mechanism that regulates their blood glucose level.
A person is exposed to cold temperatures. Describe the feedback response that helps maintain their body temperature.
Which hormone is released when blood glucose levels are too low? (1) Insulin, (2) Glucagon, (3) Adrenaline, (4) Thyroxine
Which of the following best describes a negative feedback loop? (1) The response increases the original stimulus, (2) The response decreases the original stimulus, (3) The response has no effect, (4) The response is random
Which of the following best describes the role of effectors in a feedback system? (1) Detect changes, (2) Process information, (3) Carry out responses, (4) Store information
Which of the following is a correct sequence in a feedback system? (1) Effector → Receptor → Control center, (2) Receptor → Control center → Effector, (3) Control center → Effector → Receptor, (4) Effector → Control center → Receptor
Fill in the blank: In negative feedback, the response of the system ________ the original stimulus.
Fill in the blank: In plants, the opening and closing of ________ helps regulate water loss through feedback mechanisms.
Fill in the blank: In thermoregulation, when body temperature rises, ________ glands secrete sweat to cool the body.
Fill in the blank: The ________ system and the endocrine system often work together in feedback regulation.
True or False: All feedback mechanisms in the body are controlled by hormones.
True or False: Feedback regulation can involve both the nervous and endocrine systems.
True or False: Feedback regulation can occur at the cellular, organ, and organism levels.
True or False: Feedback regulation is only important during times of stress.
