Protein Structure
Individuals with PKU disease are mentally retarded unless

homogentisic acid in the diet is restricted
None of these
phenylalanine in the diet is restricted
tyrosine in the diet is restricted

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Protein Structure
Cyclins are proteins that

regulate ability of cells to invade tissue
regulate apoptosis of damaged cells
regulate passage from one stage of cell division to another
None of these

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Protein Structure
Metastasis involves

metalloprotein levels
All of these
ability of cells to dissolve cellular matrix
decreased levels of proteins that regulate metalloproteins

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