The hamburger and tuna tested negative for starch. expalin why foods of this type would not contain starch.

In order to understand this question, remember that starch is a complex carbohydrate or a polysaccharide . This means that it's sugars are more molecularily complex and thicker. Starches have one primary function, and that is to store excess glucose for *plants*. Starches are not produced by animals, because just like humans, fish and cows have a liver that will store glucose with our own polysaccharide; Glycogen. 

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