Introduction to Cell Communication

Cell Communication

Cells send Signals to other Cells

• Cells send Chemical Signals to coordinate activity

• A Signaling Cell produces a signal detected by a Target Cell

• Target Cells usually have specific proteins to receive signals

• Receptors must be shaped to fit the signal molecule

Environmental Signals- Cell also respond to outside stimuli

• Light

• Temperature

• Example- Plants turning to face sunlight is Phototropism

Open Ended

What are 2 reasons why cells need to communicate?

Multiple Choice

Regents Check

The hormone adrenaline can affect only cells with

• the appropriate antibodies

• ribosomes that produce adrenaline

• appropriately shaped receptors

• genes that break down adrenaline