Which Statement About Membrane Receptors in a Signal Transduction Pathway

question 54

Multiple Choice

Which statement about membrane receptors in a signal transduction pathway is true?

• A) They are embedded in the cell membrane but do not span its width.
• B) Ligands bind to the extracellular binding domain and then enter the cell.
• C) Ligands bind to the extracellular binding domain and do not enter the cell.
• D) Ligands enter the cell and bind to the cytoplasmic side of the receptor.
• E) Ligands bind irreversibly to the membrane receptor.

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