AP Bio Cell Communication and Cell Signaling

Front

What type of macromolecule are receptor molecules?

Back

Protein

Front

What type of cell signaling is effective when cells are in direct contact?

Back

Juxtacrine signaling

Front

What is the first stage of signal transduction?

Back

Reception

Front

What is cellular communication that occurs through cell junctions connecting cells?

Back

Direct contact

Front

True/False: Steroid hormones can passively diffuse across membranes.

Back

True

Front

What is the role of ligands in cell signaling?

Back

Ligands are signaling molecules that bind to receptors to initiate a response.

Front

Define paracrine signaling.

Back

Paracrine signaling is a form of cell communication where signals are sent to nearby cells.

Front

What is endocrine signaling?

Back

Endocrine signaling involves hormones being 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 signal transduction?

Back

Signal transduction is the process by which a cell responds to external signals through a series of molecular events.