Protein Structure
The four subunits of the hemoglobin (Hb) gene represent protein's

primary structure
secondary structure
tertiary structure
quaternary structure

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Protein Structure
Cyclins are proteins that

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

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Protein Structure
Metastasis involves

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

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