THE CELL
CELL COMMUNICATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A T-cell bonds with the antigen on a B-cell in order to signal the immune system.
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A plant cell sends signaling molecules through a gap junction to the adjoining cell.
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A bacterial cell sends signaling molecules to bacteria in the nearby vicinity in order to maintain the population size.
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A pancreas cell releases insulin that travels through the blood stream to cells in other parts of the body.
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Detailed explanation-1: -Which of the following statements provides the BEST example of a local signaling event? A bacterial cell sends signaling molecules to bacteria in the nearby vicinity in order to maintain the population size.
Detailed explanation-2: -Local signaling includes Paracrine signaling (A secreting cell acts on nearby target cells by discharging molecules of a local regulator into the extracellular fluid.) and Synaptic Signaling (A nerve cell releases neurotransmitter molecules into a synapse, stimulating the target cell.)
Detailed explanation-3: -Which statements are examples of cell signaling? a neuron releases neurotransmitters into a synapse, triggering a target nerve cell. as a response to increasing densities, bacteria coordinate behaviors and form biofilms. Insulin hormone produced by the pancreas triggers the intake of glucose by liver cells.
Detailed explanation-4: -This type of signaling, in which cells communicate over relatively short distances, is known as paracrine signaling. Paracrine signaling allows cells to locally coordinate activities with their neighbors.