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Photosynthesis as Matter and Energy Transformation
Worksheet
Grade Level
Grade 7
7.28 Photosynthesis as Matter and Energy Transformation
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Why can the total mass of a closed photosynthesis system stay constant even though carbon dioxide and water become glucose and oxygen?
A
The atoms are rearranged into new molecules, but no matter leaves or enters the closed system.
B
Glucose is energy rather than matter.
C
Light adds extra atoms from outside the system.
D
Oxygen has no mass.
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