Tuesday, November 1, 2011

2.67a



1. *the leaf* - consider process of photosynthesis (leaf absorbs light energy : carbon dioxide + water -> glucose + oxygen) 
this is anexample of excretion – the release of metabolic waste

2. respiration
Glucose (C6H12O6) + O2 -> enzyme rection -> ATP + carbon dioxide + water
Carbon dioxide ( like water in 1.) is metabolic waster = excretion

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