Homeostasis and Thermoregulation

In a negative feedback loop, what happens to a variable (like temperature) when it increases past its normal state?

• It continues to increase.

• It decreases until it resumes its normal state.

• It decreases until it is lower than its normal state.

• It does not change.

When you are cold, you shiver and your blood vessels contract, which warms you up. When you are hot, you sweat and your blood vessels expand, which cools you down.  

• Positive Feedback Response

• Negative Feedback Loop 

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NGSS.HS-LS1-3

The two types of feedback systems that help organisms maintain homeostasis are:

• positive and negative 

• receptor and effector

• static and dynamic

• minor and major

When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. This is an example of a:

• Positive Feedback Loop

• Negative Feedback Loop

Homeostasis

• allows for a wildly fluctuating internal environment

• is impossible in vertebrates

• is the maintenance of a relatively stable internal environment and often incorporates a form of feedback regulation

• is the maintenance of a relatively stable external environment and often incorporates a form of feedback regulation

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NGSS.HS-LS1-3

The tendency of an organism to maintain a balanced state in order to stay healthy.

• Stimuli

• Response

• Tropism

• Homestasis

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NGSS.MS-LS1-2

Negative Feedback Loops:

• amplify processes

• maintains the normal state

• are initiated during childbirth

• are found only in plants

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NGSS.HS-LS1-3

The ultimate cause of death

• Over Heating

• Diabetes

• Bad Hair

• Loss of Homeostasis

What is another word that can be used to describe "homeostasis"?

• STABLE

• EQUAL

• COMPLETE

• CORRECT

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NGSS.MS-LS1-3

Why is the maintenance of homeostasis important to multicellular organisms?

• They must keep their internal environment within a narrow range of conditions.

• They require the ability to adjust their internal environment to match their external environment

• Their cells need to be able to respond rapidly to drastic changes in their external enviornment

• Their internal environment must provide their cells with a wide range of conditions

Tags

NGSS.HS-LS1-3