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What are receptors?

Option: 1

Proteins that bind to ligands and initiate a response

Option: 2

Proteins that transport ligands across cell membranes

Option: 3

Proteins that break down ligands into smaller molecules


Option: 4

Proteins that store ligands inside cells

Answers (1)


Receptors are proteins that are located on the surface of cells or inside cells. They are responsible for recognizing and binding to specific ligands, such as hormones, neurotransmitters, or drugs. When a ligand binds to a receptor, it can initiate a cellular response, such as a change in gene expression or the opening of ion channels.

Option 1 is the correct answer. 

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