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Cellular Communication and Signaling

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Questions and Answers

What is the term that identifies different types of communication methods between living cells?

Ligand Binding

Cellular Communication (correct)

Cell Signaling

Receptor Response

What is the role of a ligand in cellular communication?

To relay the message to the target cell

To produce a response in the signaling cell

To receive signals from the target cell

To bind to receptors on the target cell (correct)

What happens when a ligand binds to a receptor on the target cell?

The target cell produces a response to the signaling cell

A messenger molecule relays the signal to the target cell (correct)

The ligand is broken down by the target cell

The signaling cell stops producing ligands

What is the sequence of events in cellular communication?

Ligand is released, binds to receptor, messenger relays signal, cell responds Signup and view all the answers

Why do only specific target cells respond to specific ligands?

Because only specific target cells have the specific receptor Signup and view all the answers

What is the primary driving force for the flow of ions across the plasma membrane in ligand-gated ion channels?

The electrochemical gradient for the permeant ions Signup and view all the answers

What is the role of the pore in ligand-gated ion channels?

To enable the regulated flow of selected ions across the plasma membrane Signup and view all the answers

What happens to the ion channel when the ligand leaves the receptor?

The channel closes again Signup and view all the answers

What is the function of ligand-gated ion channels in cellular communication?

To trigger a change in cell activity Signup and view all the answers

What is an example of a ligand that can bind to a receptor on a target cell?

Acetylcholine Signup and view all the answers