Homeostasis

What is homeostasis in organisms?

• The process of organisms adapting to external environments

• The process of organisms keeping their internal conditions constant

• The process of organisms changing their internal conditions frequently

• The process of organisms interacting with other organisms

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NGSS.HS-LS1-3

Which analogy is used to describe the concept of homeostasis in the image?

• It is similar to a car engine regulating its temperature.

• It is similar to a computer maintaining its processing speed.

• It is similar to a thermostat that you have to keep temperature in your home.

• It is similar to a refrigerator keeping its contents cool.

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NGSS.HS-LS1-3

What is the primary function of feedback mechanisms in homeostasis?

• To prevent any change in the environment

• To enhance or resist changes to keep conditions stable

• To signal unrelated systems in the body

• To shut down all body systems during stress

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NGSS.HS-LS1-3

What are the two main types of feedback systems in homeostasis?

• Positive and Negative Feedback

• Open and Closed Feedback

• Direct and Indirect Feedback

• Active and Passive Feedback

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NGSS.HS-LS1-3

Which type of feedback system is more common in homeostasis?

• Positive Feedback

• Negative Feedback

• Direct Feedback

• Closed Feedback

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NGSS.HS-LS1-3

What is the primary function of the negative feedback mechanism in biological systems?

• To change the system's state drastically

• To maintain the system as it is (status quo)

• To stop all system functions

• To decrease the system's efficiency

Tags

NGSS.HS-LS1-3

Which part of the brain is primarily responsible for starting cooling mechanisms when the body is too warm?

• Cerebellum

• Hypothalamus

• Medulla oblongata

• Frontal lobe

Tags

NGSS.HS-LS1-3

What does a positive feedback mechanism in biological systems typically do?

• It reduces or stabilizes changes in the system.

• It enhances or drives changes in the system.

• It stops all changes within the system.

• It has no effect on changes within the system.

What initiates the release of oxytocin during childbirth?

• The baby is born.

• The head of the fetus pushes against the cervix.

• Oxytocin is carried in the bloodstream to the uterus.

• Contractions begin spontaneously without any triggers.

What is the normal body temperature for humans in Celsius?

• 35°C

• 37°C

• 40°C

• 42°C