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Homeostasis in Mammals

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Questions and Answers

What does homeostasis refer to?

The response of cells to external changes

The regulation of external conditions in mammals

The fluctuation of enzyme levels in the body

The constant maintenance of an internal environment (correct)

Why is homeostasis important for organisms?

To create optimal conditions for enzyme inactivation

To accelerate metabolic waste production

To ensure optimal conditions for enzyme action and cell function (correct)

To maintain fluctuating internal conditions

Which of the following is an example of a physiological factor controlled by homeostasis in mammals?

Core body temperature (correct)

Amount of sunlight exposure

Number of cells in the body

Activity level during the day

What type of feedback mechanism is predominantly used in homeostatic control?

Negative feedback Signup and view all the answers

How do sensory cells contribute to homeostasis?

By detecting information about internal and external body conditions Signup and view all the answers

What is the purpose of maintaining optimal conditions for enzyme action through homeostasis?

To ensure efficient cellular functions Signup and view all the answers

What is the function of the nervous system in maintaining homeostasis in mammals?

Acting in fast, short-lived responses Signup and view all the answers

What is the outcome of a negative feedback loop?

Decreasing the factor being monitored Signup and view all the answers

Why is urea less toxic than ammonia in the body?

Ammonia is converted to urea to avoid toxicity Signup and view all the answers

How is urea produced in the body?

By deamination of excess amino acids in the liver Signup and view all the answers