AP Bio Insta-Review Topic 4.1*: Cell Communication

Front

What is paracrine signaling?

Back

A type of signaling where a ligand binds to nearby cells.

Front

What is autocrine signaling?

Back

A type of signaling where a cell releases a signal that binds to receptors on itself.

Front

What is a secondary messenger?

Back

A molecule that transmits signals from a receptor to a target within the cell, e.g., cAMP.

Front

What is the role of ligands in cell signaling?

Back

Ligands are signaling molecules that bind to receptors on target cells.

Front

What is juxtacrine signaling?

Back

A type of signaling that occurs through direct contact between neighboring cells.

Front

What is endocrine signaling?

Back

A type of signaling where hormones are released into the bloodstream to affect distant cells.

Front

What is the difference between autocrine and paracrine signaling?

Back

Autocrine signaling affects the same cell that releases the signal, while paracrine signaling affects nearby cells.

Front

What is the function of cAMP in cell signaling?

Back

cAMP acts as a secondary messenger that helps relay signals from receptors to target molecules inside the cell.

Front

What is synaptic signaling?

Back

A type of signaling that occurs between neurons, where neurotransmitters are released into a synapse.

Front

What is the significance of receptor binding in cell communication?

Back

Receptor binding initiates a response in the target cell, leading to a specific cellular action.