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Questions and Answers
What would happen if the internal environment of human cells could not be maintained within stable conditions?
What would happen if the internal environment of human cells could not be maintained within stable conditions?
- The cells would thrive in fluctuating conditions.
- The cells would survive normally despite the changes.
- The cells would adapt to the changing external environment.
- The cells would struggle to survive. (correct)
Which of the following best describes homeostasis in organisms?
Which of the following best describes homeostasis in organisms?
- The capacity to maintain stable internal conditions relatively independent of external conditions. (correct)
- The tendency to rapidly change internal conditions to match external conditions.
- The ability to completely ignore external conditions.
- The process of conforming to unstable internal conditions.
How do human cells respond when the temperature of the internal environment increases significantly?
How do human cells respond when the temperature of the internal environment increases significantly?
- They coordinate a response to counteract the changes. (correct)
- They immediately shut down to prevent overheating.
- They activate mechanisms to increase internal temperature further.
- They rely solely on external cooling to regulate temperature.
How does the human body maintain a stable internal temperature on a hot day?
How does the human body maintain a stable internal temperature on a hot day?
What does the term 'homeostasis' refer to regarding a cell's state?
What does the term 'homeostasis' refer to regarding a cell's state?
What is the relationship between the internal and external environments of cells?
What is the relationship between the internal and external environments of cells?
If a person's body temperature rises due to exercise, which of the following is an example of a homeostatic response?
If a person's body temperature rises due to exercise, which of the following is an example of a homeostatic response?
Why is homeostasis crucial for the survival of human cells?
Why is homeostasis crucial for the survival of human cells?
Which of the following is the best example of homeostasis?
Which of the following is the best example of homeostasis?
What happens when external conditions drastically change, and the body can no longer maintain homeostasis?
What happens when external conditions drastically change, and the body can no longer maintain homeostasis?
Flashcards
What is homeostasis?
What is homeostasis?
The ability of organisms to maintain stable conditions in their internal environment, relatively independent of external conditions.
How does the external environment affect cells?
How does the external environment affect cells?
The external environment is constantly changing, which influences both the internal environment and the cells.
Why do cells need stable conditions?
Why do cells need stable conditions?
Human cells need stable conditions to survive, so the internal environment self-regulates to counteract changes through coordinated responses.
How does sweating help regulate body temperature?
How does sweating help regulate body temperature?
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Study Notes
The relationship of cells with their environment
Homeostasis
- The external environment is constantly changing.
- The internal environment changes, influenced by the external environment and cell activity.
- Human cells need to be in stable conditions to survive.
- The internal environment self-regulates to counteract changes through a coordinated response of the cells.
- Homeostasis is the ability of organisms to maintain stable and relatively constant conditions in their internal environment, with relative independence from the conditions of the external environment.
- When the temperature of the internal environment increases too much, cells in the sweat glands secrete sweat to cool the skin.
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