A ligand is a A. substance that binds to receptor molecules. B. type of electrical stimulus. C. type of drug. D. cholinergic synapse.

Explanation: Is any molecule which attaches reversibly to a protein. These are typically used in cellular signaling and cellular regulation, but have many other uses.

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throwdolbeau throwdolbeau · Answer 2 · 2021-12-21T12:11:52+01:00

a. A ligand is a substance that binds to receptor molecules.

What is a Ligand?

A ligand is an ion or molecule, which donates a pair of electrons to the central metal atom or ion to form a coordination complex.
It is a substance that forms a complex with a biomolecule to serve a biological purpose.
In protein-ligand binding it is usually a molecule which produces a signal by binding to a site on a target protein.
A ligand is defined as any molecule or atom that irreversibly binds to a receiving protein molecule, otherwise known as a receptor.
For example: In protein-ligand binding-insulin is used to signal various things to the metabolism of each cell.

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