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Chapter 7
Breath of Life |
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Question:
We have seen that glucose and oxygen are both needed by the mitochondria to produce high energy molecules of ATP. We have also studied that glucose comes from the food absorbed in the intestines and carried by the circulatory system to each cell.
But where does the oxygen come from and how does it get to the cell? Where does the carbon dioxide that is a by-product of cellular respiration go? |
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| Connecting to the National Standards for Science:
Important levels of organization for structure and function include cells, organs, tissues, organ systems, whole organisms, and ecosystems.
The human organism has systems for digestion, respiration, reproduction, circulation, excretion, movement, control, and coordination, and for protection from disease. These systems interact with one another.
Disease is a breakdown in structures or functions of an organism. Some diseases are the result of intrinsic failures of the system. Others are the result of damage by infection by other organisms. |
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| Critical Pathway for Breath of Life with Essential Activities and Concepts |
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