Protein Structure
Beta pleated sheets are examples of protein's

primary structure
tertiary structure
quaternary structure
secondary structure

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Protein Structure
Metastasis involves

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

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Protein Structure
Cyclins are proteins that

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

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