Question

Explain the following:
a) Receptor
b) Contaminant
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Answer 1

Answer:

a) A receptor is a protein which binds to a specific molecule.

Hope it will be useful .

Answer 2

Answer:

$\bold\purple{Answer}$

Receptors are proteins, usually cell surface receptors, which bind to ligands and cause responses in the immune system, including cytokine receptors, growth factor receptors and Fc receptor. Receptors can be found in various immune cells like B cells, T cells, NK cells, monocytes and stem cells.