Overview of Homeostasis

What is the need of an organism to stay stable by regulating internal conditions called?

• Homeostasis

• Metabolism

• Osmoregulation

• Equilibrium

Organisms constantly take in stimuli and have to respond to them in order to maintain what?

• homeostasis

• equilibrium

• stability

• adaptation

Feedback mechanisms in organisms are responsible for maintaining homeostasis.

• They regulate and maintain homeostasis.

• They primarily regulate growth.

• They distribute nutrients.

• They manage waste products.

In the diagram, what is the correct order of the feedback mechanism?

• A) Output -> System -> Input

• B) Input -> System -> Output

• C) System -> Input -> Output

• D) Input -> Output -> System

A positive feedback loop is a process in which the output of a system enhances or amplifies the process that generates it.

• It amplifies the initial effect, leading to further change in the same direction.

• It reduces the initial effect, stabilizing the system.

• It neutralizes the effect, maintaining equilibrium.

• It reverses the effect, causing oscillations.

Which of the following is an example of a positive feedback loop?

• A) Human childbirth

• B) Photosynthesis

• C) Cellular respiration

• D) Digestion

In a positive feedback loop, what happens to the output of a system?

• A) It diminishes the response

• B) It intensifies the response

• C) It has no effect

• D) It reverses the response.

Which of the following is an example of a negative feedback mechanism?

• A) Human body temperature

• B) Photosynthesis

• C) Cellular respiration

• D) Fermentation

In a negative feedback loop, what does the output of a system cause?

• A) A counter response to return to a set point

• B) An increase in the input

• C) A decrease in the system's efficiency

• D) A change in the system's structure

Which of the following components is part of the cell membrane?

• Carbohydrate chain

• Glycoprotein

• Phospholipid bilayer

• All of the above.