Understanding Homeostasis and Negative Feedback Loops

What is homeostasis?

• The ability to maintain a stable internal environment

• The process of cell division

• The breakdown of glucose

• The production of energy

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NGSS.HS-LS1-3

Homeostasis ensures that the body's internal conditions remain within a ______ range suitable for optimal cell function.

• wide

• narrow

• fluctuating

• random

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NGSS.HS-LS1-3

What do receptors detect in the internal environment?

• Changes in the external environment

• Changes in the internal environment

• Changes in the weather

• Changes in the ecosystem

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NGSS.HS-LS1-3

The receptor detects changes from the ______, which is the ideal value for a parameter.

• set point

• control point

• balance point

• reference point

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NGSS.HS-LS1-3

Which of the following is an example of a parameter that receptors monitor?

• A) Body temperature

• B) Heart rate

• C) Blood pressure

• D) All of the above

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NGSS.HS-LS1-3

What happens after the receptor detects a change in the negative feedback loop?

• The effector responds

• The control center processes the information

• The stimulus is ignored

• The variable is adjusted

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NGSS.HS-LS1-3

The response of the effector in a negative feedback loop is to ______.

• increase the stimulus

• decrease the stimulus

• maintain the stimulus

• ignore the stimulus

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NGSS.HS-LS1-3

What is the purpose of the control center in a negative feedback loop?

• To detect changes

• To process information

• To respond to changes

• To ignore changes

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NGSS.HS-LS1-3

In the context of homeostasis, what does the term 'dynamic equilibrium' refer to?

• Constant change

• Stable internal conditions

• Random fluctuations

• External balance

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NGSS.HS-LS1-3

The diagram shows that after the effector responds, the variable returns to ______.

• imbalance

• homeostasis

• fluctuation

• instability

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NGSS.HS-LS1-3