AP BIOLOGY

Detailed explanation-1: -Endocrine signaling is an example of long distance communication between hormone producing cells, tissues and glands and cells that express hormone receptor molecules.

Detailed explanation-2: -Paracrine Signaling: This takes place across short distances between two cells. This method of communication allows cells to coordinate movement and activity with their neighbors. An example of this is called synaptic signaling. That’s when signaling occurs across the tiny gap between two neurons.

Detailed explanation-3: -Cell signaling (also called signal transduction) describes the ability for cells to respond to stimuli from their environment. Some examples include wound healing after injury, activation of the immune system in response to pathogens, and changes in gene expression during different developmental stages.

Detailed explanation-4: -Endocrine signaling: a cell targets a distant cell through the bloodstream. A signaling molecule is released by one cell, then travels through the bloodstream to bind to receptors on a distant target cell elsewhere in the body.

Detailed explanation-5: -Hormones travel the large distances between endocrine cells and their target cells via the bloodstream, which is a relatively slow way to move throughout the body. Because of their form of transport, hormones get diluted and are present in low concentrations when they act on their target cells.