DEBio 9 Visual ID

Front

What is a ligand receptor?

Back

A ligand receptor is a protein molecule that receives and responds to a specific signal molecule (ligand), initiating a cellular response.

Front

What type of signal receptor is located inside the cell?

Back

An internal signal receptor is a type of receptor that is found within the cell, typically in the cytoplasm or nucleus, and binds to signaling molecules that can cross the cell membrane.

Front

What is paracrine signaling?

Back

Paracrine signaling is a form of cell signaling in which a cell produces a signal to induce changes in nearby cells, affecting their behavior.

Front

What is an integral protein?

Back

An integral protein is a type of membrane protein that is permanently attached to the biological membrane and plays a key role in transporting substances across the membrane.

Front

What role does a signal receptor play in transcription regulation?

Back

A signal receptor can regulate transcription by activating or inhibiting the expression of specific genes in response to signaling molecules.

Front

Define signal transduction.

Back

Signal transduction is the process by which a cell converts an external signal into a functional response, often involving a series of molecular events.

Front

What is the difference between internal and external signal receptors?

Back

Internal signal receptors bind to signaling molecules that can cross the cell membrane, while external signal receptors are located on the cell surface and bind to molecules that cannot enter the cell.

Front

Explain the concept of feedback loops in cell signaling.

Back

Feedback loops are regulatory mechanisms in cell signaling where the output of a process influences the operation of the process itself, often maintaining homeostasis.

Front

What is the significance of receptor-ligand binding?

Back

Receptor-ligand binding is crucial for initiating cellular responses, as it triggers conformational changes in the receptor that activate intracellular signaling pathways.

Front

Describe the role of second messengers in cell signaling.

Back

Second messengers are small molecules that relay signals received by receptors on the cell surface to target molecules inside the cell, amplifying the signal.