Protein Structure
Beta pleated sheets are examples of protein's

secondary structure
tertiary structure
quaternary structure
primary structure

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Protein Structure
Metastasis involves

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

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Protein Structure
Cyclins are proteins that

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

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