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Body System: Circulatory and Respiratory Questions

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Body System: Circulatory and Respiratory Questions

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Questions and Answers

What is the main purpose of breathing for organisms?

To support metabolism by breaking down biomolecules (correct)

To release oxygen

To release carbon dioxide

To generate energy for cellular activities

What is the difference between breathing and respiration?

Breathing is the exchange of gases while respiration is the mechanical process of oxygen intake.

Breathing involves inhalation and exhalation while respiration is the release of carbon dioxide.

Breathing is only done by plants while respiration is the process in animals.

Breathing is a mechanical process of oxygen intake while respiration is the exchange of gases through inhalation and exhalation. (correct)

Which of the following organisms use their skin for breathing?

Earthworms (correct)

Humans

Fish

Birds

What type of gas exchange system do gills represent?

Lungs Signup and view all the answers

Why do some organisms like frogs use their skin for respiration?

Due to the absence of lungs, relying on the skin for gas exchange Signup and view all the answers

Why can't arthropods perform cutaneous respiration?

They have thick exoskeleton that is not adequate to allow gas exchange Signup and view all the answers

What is the mechanism by which gills extract dissolved oxygen in water?

Countercurrent exchange Signup and view all the answers

Which animals have air sacs that provide a large surface for gas exchange?

Birds Signup and view all the answers

What is the main function of the nasal cavity in the human respiratory system?

To filter out particles Signup and view all the answers

How does the surface area affect gas exchange efficiency in animals?

Greater surface area enhances gas exchange between blood and tissues Signup and view all the answers