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Cellular Respiration Basics
Worksheet
Grade Level
Grade 6
6.72 Cellular Respiration Basics
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Two students make models. Model 1 shows respiration only in lungs. Model 2 shows respiration in body cells throughout the organism. Which model is better and why?
A
Model 1, because only lungs need energy.
B
Model 2, because cellular respiration happens in living cells throughout the organism.
C
Model 1, because oxygen enters through lungs.
D
Neither model, because respiration happens outside cells.
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