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Questions and Answers
What is homeostasis in mammals?
What is homeostasis in mammals?
- The maintenance of unstable internal environment within restricted limits.
- The maintenance of stable internal environment within restricted limits. (correct)
- The maintenance of unstable external environment within restricted limits.
- The maintenance of stable external environment within restricted limits.
What are the examples of homeostasis mentioned in the text?
What are the examples of homeostasis mentioned in the text?
- Core temperature, blood pH, blood glucose concentration, and blood water potential. (correct)
- Core temperature, blood pH, blood glucose concentration, and blood pressure
- Core temperature, blood acidity, blood glucose concentration, and blood water potential.
- Core temperature, blood alkalinity, blood glucose concentration, and blood water potential.
What happens when blood glucose concentration is too high?
What happens when blood glucose concentration is too high?
- Enzymes denature and fewer enzyme-substrate complexes are formed
- ATP production increases and cell death occurs.
- Dehydration occurs. (correct)
- Kidneys absorb all glucose causing more water to be lost in urine
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Study Notes
- Homeostasis in mammals is the maintenance of stable internal environment within restricted limits.
- Examples of homeostasis include core temperature, blood pH, blood glucose concentration, and blood water potential.
- Enzymes have an optimum temperature and pH.
- Maintenance of a stable core temperature and blood pH is important for enzyme activity.
- Physiological control systems normally involve negative feedback.
- Too high or too low blood pH can cause enzymes to denature and fewer enzyme-substrate complexes.
- Too low blood glucose concentration can result in less ATP produced and cell death.
- Too high blood glucose concentration can cause dehydration.
- Water potential of blood decreases when blood glucose concentration is too high.
- Kidneys can't absorb all glucose causing more water to be lost in urine.
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