AP Bio Cell Communication and Cell Signaling

Front

What is a signal molecule that specifically binds to another molecule?

Back

Ligand

Front

What is the correct sequence of events involved in signal transduction?

Back

Reception, Transduction, Response

Front

What is a chemical message that usually travels through the bloodstream to target cells?

Back

Hormone

Front

Which signaling molecule acts long-distance?

Back

Hormone

Front

What feedback mechanism amplifies responses in biological organisms?

Back

Positive Feedback

Front

What is the role of a ligand in cell signaling?

Back

A ligand binds to a receptor to initiate a cellular response.

Front

What is signal transduction?

Back

The process by which a cell converts an external signal into a functional response.

Front

What is the difference between endocrine and paracrine signaling?

Back

Endocrine signaling involves hormones traveling through the bloodstream, while paracrine signaling involves local regulators affecting nearby cells.

Front

What are second messengers in cell signaling?

Back

Intracellular molecules that relay signals received at receptors on the cell surface.

Front

What is the function of neurotransmitters?

Back

Chemical messengers that transmit signals across a synapse from one neuron to another.