AP Bio: Cell Signaling

Front

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

Back

False. Different cells can respond differently to the same signal due to variations in receptor types and intracellular signaling pathways.

Front

What is the correct order of communication in cell signaling?

Back

Reception, Transduction, Response. This sequence describes how cells detect signals, convert them into a form that can bring about a response, and then execute that response.

Front

What is programmed cell death known as?

Back

Apoptosis. It is a regulated process that leads to the elimination of cells without causing inflammation.

Front

Which type of protein can activate another protein by transferring a phosphate group to it?

Back

Protein kinases. They play a crucial role in signaling pathways by modifying other proteins through phosphorylation.

Front

What type of cellular communication occurs through cell junctions?

Back

Direct contact. This involves the transfer of signals between adjacent cells through gap junctions or other cell junctions.

Front

What is the role of G-proteins in cell signaling?

Back

G-proteins act as molecular switches that relay signals from activated receptors to target proteins inside the cell.

Front

Define signal transduction.

Back

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

Front

What is the function of second messengers in cell signaling?

Back

Second messengers amplify the signal received by receptors and help propagate the signal within the cell.

Front

What is local signaling in cellular communication?

Back

Local signaling refers to communication between cells that are in close proximity, often through signaling molecules that affect nearby cells.

Front

What is the difference between long-distance signaling and local signaling?

Back

Long-distance signaling involves hormones or other signaling molecules that travel through the bloodstream to reach distant target cells, while local signaling affects nearby cells.