How to detect a long signal inside an even longer one?

1. How do cells communicate over long distances?
2. What are the detectors of radio waves?
3. How are signals passed from outside of the cell to inside of the cell?
4. What are the four main steps of cell signaling?

How do cells communicate over long distances?

Endocrine Signaling: To send messages across long distances, cells use this method. Endocrine signals travel through the bloodstream to reach target tissues and cells. Signals that originate in one part of the body and travel to their target through the bloodstream are called hormones.

What are the detectors of radio waves?

A radio wave is generated by a transmitter and then detected by a receiver. An antenna allows a radio transmitter to send energy into space and a receiver to pick up energy from space. Transmitters and receivers are typically designed to operate over a limited range of frequencies.

How are signals passed from outside of the cell to inside of the cell?

Cells typically receive signals in chemical form via various signaling molecules. When a signaling molecule joins with an appropriate receptor on a cell surface, this binding triggers a chain of events that not only carries the signal to the cell interior, but amplifies it as well.

What are the four main steps of cell signaling?

There are four basic categories of chemical signaling found in multicellular organisms: paracrine signaling, autocrine signaling, endocrine signaling, and signaling by direct contact.