Homeostasis

Question 1

What is homeostasis?

Answer 1

Homeostasis is the process by which living organisms maintain a stable internal environment.

Question 2

Why is homeostasis important?

Answer 2

Homeostasis is important because it allows organisms to function effectively despite changes in external conditions.

Question 3

What are some examples of variables regulated by homeostasis?

Answer 3

Examples include temperature, pH, hydration, and glucose levels.

Question 4

How do organisms achieve homeostasis?

Answer 4

Organisms achieve homeostasis through feedback mechanisms that involve sensors, control centers, and effectors.

Question 5

What is a feedback mechanism?

Answer 5

A feedback mechanism is a process that uses the conditions of one component to regulate another.

Question 6

What are the two types of feedback mechanisms?

Answer 6

The two types of feedback mechanisms are negative feedback and positive feedback.

Question 7

What is negative feedback?

Answer 7

Negative feedback is a process that counteracts a change to bring the system back to its set point.

Question 8

What is positive feedback?

Answer 8

Positive feedback is a process that amplifies a change, moving the system away from its set point.

Question 9

Can you give an example of negative feedback?

Answer 9

An example of negative feedback is the regulation of body temperature in humans.

When body temperature rises, mechanisms such as sweating are activated to cool the body down.

Question 10

Can you give an example of positive feedback?

Answer 10

An example of positive feedback is the process of childbirth.

During labor, the release of oxytocin increases contractions, which leads to more oxytocin release.