Respiration
Respiration
Organisms need energy to power their functions and the process of respiration is key in energy producton.
Learning Outcome: Describe the role of respiration in organisms, including how it relates to animal organ systems and development.
Respiration happens on two levels:
Cellular Respiration
Cells convert sugar energy into a molecular form they can use to carry out a variety of functions.
Organ System Respiration
The way an organism gets the oxygen needed for respiration and uses or eliminates carbon dioxide.
Respiration is a key process carried out in some format by all organisms.
Plants respire.
Bacteria respire.
Protists respire.
Animals respire.
The way we know? All of these give off heat, an altered form of energy. The snow is melted around the base of this tree. It may not have as high of a metabolism as most animals, but its cells are respiring and giving off heat too.
Here are the basics of cellular and organ system respiration in humans, which is similar to respiration in many other vertebrate animals.
Watch this video; you can select the closed captioning “cc” option if you would like to see the text.
This is a different view of respiration using models.
Watch this video; you can select the closed captioning “cc” option if you would like to see the text.
The next section introduces the first fully terrestrial vertebrates that breath with lungs from the moment they hatch out of eggs: the reptiles.
Check your knowledge – Respiration
Review your notes. Can you describe the role of respiration in animal species? If so, move forward to the next page.
Learning Objective:
Describe the role of respiration in organisms, including how it relates to animal organ systems and development.
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Go forward to the Reptiles Page
Development Contents
Complete all five of these sections before taking the quiz and submitting your media piece.
This Module
6: Why is it here now?
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6B: Development
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