Why Did People Go on Crusade

question 44

Essay

Why did people go on crusade?

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Definitions:

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.

Ligand

A molecule that binds to another (usually larger) molecule, used especially in reference to molecules that bind to receptor sites on target cells.