Answer:
An enzyme attracts substrates to it's active site, catalyzesthe chemical reaction by which products are formed and then allows the products to Daso create separate from the enzyme surface the combination formula by an enzyme and its abstract is is called the enzyme substrate complex.
The physical characteristics of an organism is its phenotype. I remember this because phenotype and physical both start with 'ph.'
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The answer would be "a person's skin"
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For energy
For health
For imunity
Endosymbiosis is important because it is a theory that explains the origin of chloroplast and mitochondria. It is also a theory that explains how eukaryotic cells came to be.