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. What is the expected feedback response in their body?
A person is exposed to cold temperatures. Which feedback mechanism is activated to maintain body temperature?
A person is running and their body temperature rises. Which feedback mechanism is likely to be activated?
Describe how the regulation of blood calcium levels is an example of negative feedback.
A patient has low blood calcium levels. Which hormone is likely to be secreted to restore balance? (1) Calcitonin, (2) Parathyroid hormone, (3) Insulin, (4) Glucagon
A person eats a meal high in sugar. What is the expected feedback response in their body?
A person is exposed to cold temperatures. Which feedback mechanism is activated to maintain body temperature?
A person is running and their body temperature rises. Which feedback mechanism is likely to be activated?
A patient has low blood calcium levels. Which hormone is likely to be secreted to restore balance? (1) Calcitonin, (2) Parathyroid hormone, (3) Insulin, (4) Glucagon
Which hormone is released when blood glucose levels are high? (1) Glucagon, (2) Insulin, (3) Adrenaline, (4) Thyroxine
Which of the following best describes negative feedback? (1) The response amplifies the original stimulus, (2) The response reduces or counteracts the original stimulus, (3) The response has no effect on the stimulus, (4) The response is unrelated to the stimulus
Which of the following best describes the function of a receptor in a feedback system? (1) To carry out a response, (2) To detect changes in the environment, (3) To send commands to effectors, (4) To store information
Fill in the blank: In a feedback loop, the component that detects changes in the environment is called the __________.
Fill in the blank: In negative feedback, the response of the system __________ the original stimulus.
Fill in the blank: The __________ is the part of a feedback system that receives information from the receptor and sends commands to the effector.
Fill in the blank: The hormone __________ is released by the pancreas to increase blood glucose levels.
True or False: Feedback regulation can occur at the cellular, tissue, organ, and organism levels.
True or False: Feedback regulation is only found in animals, not in plants.
True or False: Homeostasis is only maintained by negative feedback mechanisms.
True or False: In a negative feedback system, the effector's action is always opposite to the initial change.
