AP Cell Communication

Front

What determines whether a signal molecule binds on the surface or enters the cell?

Back

Size, polarity, and ability to cross the membrane determine whether a signal molecule binds on the surface or enters the cell.

Front

Do all cells have the same response to the same signal?

Back

False. Different cells can respond differently to the same signal.

Front

Are all signals and receptors the same in all cells?

Back

False. Signals and receptors can vary between different types of cells.

Front

What type of signaling occurs when cancer cells signal themselves to grow and divide?

Back

Autocrine signaling.

Front

Is communication between neighboring/touching cells common in plants?

Back

True. Plants often communicate through direct contact.

Front

What is the role of receptors in cell communication?

Back

Receptors bind to signal molecules and initiate a response within the cell.

Front

What is the difference between paracrine and autocrine signaling?

Back

Paracrine signaling involves communication between nearby cells, while autocrine signaling involves a cell signaling to itself.

Front

What is a signal transduction pathway?

Back

A series of molecular events and reactions that lead to a cellular response after a signal molecule binds to a receptor.

Front

What is the significance of signal amplification in cell signaling?

Back

Signal amplification allows a small number of signaling molecules to produce a large response in the target cell.

Front

What is the function of second messengers in cell signaling?

Back

Second messengers relay signals received at receptors on the cell surface to target molecules inside the cell.