This was because glycine is an amino acid and not a good food source (Alberts, 1998). ... The structure would be different then that of carbon sources and the yeast enzymes would not recognize it, therefore; would not ferment. ... The different results could indicate different things about the solutions chemical structures, thus; tell how certain enzymes, in particular yeast, recognize them. ... Amino acid, glycine, was not an energy producer along with water, which is also not an energy producer. ... Are all amino acids not food sources for a cell? ...

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• Grade Level: High School

Influenza Virus Influenza or "flu" is caused by a RNA virus that belongs to orthomyxovirus group (Schaechter, et al, 1999). ... Influenza type A has been studied extensively, in fact the complete amino acid sequence is known (angelfire, 9/10/02). ... One theory is alterations in the structure. ... There are 566 amino acids in the primary structure of hemagglutinin. ... The head of each NA molecule is topped with a box like structure. ...

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• Grade Level: High School