When a cell releases a signal molecule into the environment and a number of cells...

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Terra

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...in the vicinity respond? A) autocrine signaling
B) paracrine signaling
C) endocrine signaling
D) synaptic signaling
 
B

A) autocrine signaling (a cell releases a signaling molecule and a receptor in the same cell binds to it)
B) paracrine signaling (nearby cells)
C) endocrine signaling (signaling between distant cells via the blood)
D) synaptic signaling (similar to paracrine signaling, but involves formation of a synapse between two cells)
 
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