Exploring Homeostasis and Negative Feedback Mechanisms

What is homeostasis?

• A state of constant change

• A process of rapid adaptation

• A dynamic equilibrium actively regulated to maintain a constant level

• A state of complete inactivity

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NGSS.HS-LS1-3

Why is maintaining body temperature important for humans?

• To ensure proper protein and chemical reaction function

• To keep the skin hydrated

• To maintain blood pressure

• To regulate heart rate

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NGSS.HS-LS1-3

What is the ideal blood glucose level in humans?

• 90-120 milligrams per deciliter

• 70-90 milligrams per deciliter

• 50-70 milligrams per deciliter

• 120-150 milligrams per deciliter

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NGSS.HS-LS1-3

What can happen if blood sugar levels drop too low?

• Improved concentration

• Coma and even death

• Enhanced physical performance

• Increased energy levels

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NGSS.HS-LS1-3

What is the role of barriers between internal and external environments in homeostasis?

• To prevent any interaction with the external environment

• To maintain an internal environment despite external changes

• To increase the organism's size

• To allow free exchange of substances

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NGSS.HS-LS1-3

What is a negative feedback loop?

• A process that has no effect on the situation

• A process that helps to make a situation less extreme

• A process that only occurs in plants

• A process that makes a situation more extreme

Tags

NGSS.HS-LS1-3

What happens when the body temperature gets too cold?

• The blood vessels dilate

• The heart rate decreases

• The body starts to shiver

• The body starts to sweat

Tags

NGSS.HS-LS1-3

Which of the following is an example of a positive feedback loop?

• Regulation of blood glucose levels

• Clotting of blood

• Regulation of body temperature

• Osmosis

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NGSS.HS-LS1-3

What is passive transport?

• Movement of particles using ATP

• Movement of particles from low to high concentration

• Movement of particles from high to low concentration

• Movement of particles without any concentration gradient

What is the main purpose of homeostasis in biology?

• To maintain ideal internal survival conditions

• To increase the organism's size

• To decrease the organism's energy consumption

• To prevent any interaction with the external environment

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NGSS.HS-LS1-3