Positive and Negative Feedback Loops

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Other, Biology, Business, Health Sciences
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11th Grade - University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a negative feedback loop?
A process that always leads to system failure
A process that has no effect on the system
A process that stabilizes around a target set point
A process that amplifies changes
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does a positive feedback loop differ from a negative feedback loop?
It stabilizes the system
It amplifies changes and moves away from the target set point
It always leads to system failure
It has no effect on the system
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is homeostasis?
A type of positive feedback loop
A stable internal environment maintained by organisms
A process of amplifying changes
A method of external temperature regulation
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do ectotherms regulate their body temperature?
By consuming more food than endotherms
By maintaining a constant internal temperature
By matching their internal temperature to the external environment
By using positive feedback loops
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What role does the hypothalamus play in temperature regulation?
It secretes insulin
It senses temperature changes and initiates responses
It causes fruit ripening
It produces ethylene
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an example of a positive feedback loop?
Blood glucose regulation
Water concentration regulation in paramecium
Temperature regulation in humans
Fruit ripening
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What hormone is responsible for lowering blood glucose levels?
Adrenaline
Cortisol
Insulin
Glucagon
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