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8 Cards in this Set
- Front
- Back
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The process by which glucose molecules combine with oxygen to produce energy is called _____.
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cellular respiration
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Which of the following would NOT be able to use diffusion to respire directly through its cell membranes?
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a hippopotamus
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True or false: Diffusion causes molecules to move from areas of lower concentration to areas of higher concentration
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false
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Earth's atmosphere contains about _____% oxygen.
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21
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When atmospheric oxygen _____, the gasoline reaction in an engine becomes so violent that it blows out the pistons, and the engine catches on fire.
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increases
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When the oxygen level reaches _____%, dry plants burst into flames spontaneously and firestorms consume the world's crops and forests.
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25
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The process of rusting is greatly accelerated when the oxygen level in the atmosphere _____.
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increases
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The person feels dizzy and hungry when the oxygen level _____.
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increases
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