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In the circular flow model, households offer the services of factors of production to firms in return for income.
Receptor Proteins
Proteins located on cell membranes or within cells that bind to specific molecules like hormones, neurotransmitters, or growth factors, initiating a response within the cell.
Carrier Proteins
Proteins that facilitate the transport of substances across a cell membrane by changing shape or binding to the substance.
Marker Molecules
Substances used to identify or track cells, biological processes, or molecules in research and diagnostic applications.
Receptor Proteins
Proteins located on the surface of cells or within cells that bind to specific molecules, triggering a response within the cell.
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